when enable_distinct_file is false not calc file checksum

fileserver.go

@@ -2280,12 +2280,12 @@ func (this *Server) SaveUploadFile(file multipart.File, header *multipart.FileHe
 	if fi.Size() != header.Size {
 		return fileInfo, errors.New("(error)file uncomplete")
 	}
-	v := this.util.GetFileSum(outFile, Config().FileSumArithmetic)
-	//if Config().EnableDistinctFile {
-	//	v= this.util.GetFileSum(outFile, Config().FileSumArithmetic)
-	//} else {
-	//	v=this.util.MD5(this.GetFilePathByInfo(fileInfo,false))
-	//}
+	v := "" // this.util.GetFileSum(outFile, Config().FileSumArithmetic)
+	if Config().EnableDistinctFile {
+		v = this.util.GetFileSum(outFile, Config().FileSumArithmetic)
+	} else {
+		v = this.util.MD5(this.GetFilePathByInfo(fileInfo, false))
+	}
 	fileInfo.Md5 = v
 	//fileInfo.Path = folder //strings.Replace( folder,DOCKER_DIR,"",1)
 	fileInfo.Path = strings.Replace(folder, DOCKER_DIR, "", 1)
@@ -3502,6 +3502,7 @@ func (this *Server) Status(w http.ResponseWriter, r *http.Request) {
 		}
 	}
 	sts["Fs.AutoRepair"] = Config().AutoRepair
+	sts["Fs.QueueUpload"] = len(this.queueUpload)
 	sts["Fs.RefreshInterval"] = Config().RefreshInterval
 	sts["Fs.Peers"] = Config().Peers
 	sts["Fs.Local"] = this.host

vendor/github.com/StackExchange/wmi/LICENSE

@@ -0,0 +1,20 @@
+The MIT License (MIT)
+
+Copyright (c) 2013 Stack Exchange
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of
+this software and associated documentation files (the "Software"), to deal in
+the Software without restriction, including without limitation the rights to
+use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
+the Software, and to permit persons to whom the Software is furnished to do so,
+subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
+FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
+COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
+IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

vendor/github.com/StackExchange/wmi/README.md

@@ -0,0 +1,6 @@
+wmi
+===
+
+Package wmi provides a WQL interface to Windows WMI.
+
+Note: It interfaces with WMI on the local machine, therefore it only runs on Windows.

vendor/github.com/StackExchange/wmi/swbemservices.go

@@ -0,0 +1,260 @@
+// +build windows
+
+package wmi
+
+import (
+	"fmt"
+	"reflect"
+	"runtime"
+	"sync"
+
+	"github.com/go-ole/go-ole"
+	"github.com/go-ole/go-ole/oleutil"
+)
+
+// SWbemServices is used to access wmi. See https://msdn.microsoft.com/en-us/library/aa393719(v=vs.85).aspx
+type SWbemServices struct {
+	//TODO: track namespace. Not sure if we can re connect to a different namespace using the same instance
+	cWMIClient            *Client //This could also be an embedded struct, but then we would need to branch on Client vs SWbemServices in the Query method
+	sWbemLocatorIUnknown  *ole.IUnknown
+	sWbemLocatorIDispatch *ole.IDispatch
+	queries               chan *queryRequest
+	closeError            chan error
+	lQueryorClose         sync.Mutex
+}
+
+type queryRequest struct {
+	query    string
+	dst      interface{}
+	args     []interface{}
+	finished chan error
+}
+
+// InitializeSWbemServices will return a new SWbemServices object that can be used to query WMI
+func InitializeSWbemServices(c *Client, connectServerArgs ...interface{}) (*SWbemServices, error) {
+	//fmt.Println("InitializeSWbemServices: Starting")
+	//TODO: implement connectServerArgs as optional argument for init with connectServer call
+	s := new(SWbemServices)
+	s.cWMIClient = c
+	s.queries = make(chan *queryRequest)
+	initError := make(chan error)
+	go s.process(initError)
+
+	err, ok := <-initError
+	if ok {
+		return nil, err //Send error to caller
+	}
+	//fmt.Println("InitializeSWbemServices: Finished")
+	return s, nil
+}
+
+// Close will clear and release all of the SWbemServices resources
+func (s *SWbemServices) Close() error {
+	s.lQueryorClose.Lock()
+	if s == nil || s.sWbemLocatorIDispatch == nil {
+		s.lQueryorClose.Unlock()
+		return fmt.Errorf("SWbemServices is not Initialized")
+	}
+	if s.queries == nil {
+		s.lQueryorClose.Unlock()
+		return fmt.Errorf("SWbemServices has been closed")
+	}
+	//fmt.Println("Close: sending close request")
+	var result error
+	ce := make(chan error)
+	s.closeError = ce //Race condition if multiple callers to close. May need to lock here
+	close(s.queries)  //Tell background to shut things down
+	s.lQueryorClose.Unlock()
+	err, ok := <-ce
+	if ok {
+		result = err
+	}
+	//fmt.Println("Close: finished")
+	return result
+}
+
+func (s *SWbemServices) process(initError chan error) {
+	//fmt.Println("process: starting background thread initialization")
+	//All OLE/WMI calls must happen on the same initialized thead, so lock this goroutine
+	runtime.LockOSThread()
+	defer runtime.UnlockOSThread()
+
+	err := ole.CoInitializeEx(0, ole.COINIT_MULTITHREADED)
+	if err != nil {
+		oleCode := err.(*ole.OleError).Code()
+		if oleCode != ole.S_OK && oleCode != S_FALSE {
+			initError <- fmt.Errorf("ole.CoInitializeEx error: %v", err)
+			return
+		}
+	}
+	defer ole.CoUninitialize()
+
+	unknown, err := oleutil.CreateObject("WbemScripting.SWbemLocator")
+	if err != nil {
+		initError <- fmt.Errorf("CreateObject SWbemLocator error: %v", err)
+		return
+	} else if unknown == nil {
+		initError <- ErrNilCreateObject
+		return
+	}
+	defer unknown.Release()
+	s.sWbemLocatorIUnknown = unknown
+
+	dispatch, err := s.sWbemLocatorIUnknown.QueryInterface(ole.IID_IDispatch)
+	if err != nil {
+		initError <- fmt.Errorf("SWbemLocator QueryInterface error: %v", err)
+		return
+	}
+	defer dispatch.Release()
+	s.sWbemLocatorIDispatch = dispatch
+
+	// we can't do the ConnectServer call outside the loop unless we find a way to track and re-init the connectServerArgs
+	//fmt.Println("process: initialized. closing initError")
+	close(initError)
+	//fmt.Println("process: waiting for queries")
+	for q := range s.queries {
+		//fmt.Printf("process: new query: len(query)=%d\n", len(q.query))
+		errQuery := s.queryBackground(q)
+		//fmt.Println("process: s.queryBackground finished")
+		if errQuery != nil {
+			q.finished <- errQuery
+		}
+		close(q.finished)
+	}
+	//fmt.Println("process: queries channel closed")
+	s.queries = nil //set channel to nil so we know it is closed
+	//TODO: I think the Release/Clear calls can panic if things are in a bad state.
+	//TODO: May need to recover from panics and send error to method caller instead.
+	close(s.closeError)
+}
+
+// Query runs the WQL query using a SWbemServices instance and appends the values to dst.
+//
+// dst must have type *[]S or *[]*S, for some struct type S. Fields selected in
+// the query must have the same name in dst. Supported types are all signed and
+// unsigned integers, time.Time, string, bool, or a pointer to one of those.
+// Array types are not supported.
+//
+// By default, the local machine and default namespace are used. These can be
+// changed using connectServerArgs. See
+// http://msdn.microsoft.com/en-us/library/aa393720.aspx for details.
+func (s *SWbemServices) Query(query string, dst interface{}, connectServerArgs ...interface{}) error {
+	s.lQueryorClose.Lock()
+	if s == nil || s.sWbemLocatorIDispatch == nil {
+		s.lQueryorClose.Unlock()
+		return fmt.Errorf("SWbemServices is not Initialized")
+	}
+	if s.queries == nil {
+		s.lQueryorClose.Unlock()
+		return fmt.Errorf("SWbemServices has been closed")
+	}
+
+	//fmt.Println("Query: Sending query request")
+	qr := queryRequest{
+		query:    query,
+		dst:      dst,
+		args:     connectServerArgs,
+		finished: make(chan error),
+	}
+	s.queries <- &qr
+	s.lQueryorClose.Unlock()
+	err, ok := <-qr.finished
+	if ok {
+		//fmt.Println("Query: Finished with error")
+		return err //Send error to caller
+	}
+	//fmt.Println("Query: Finished")
+	return nil
+}
+
+func (s *SWbemServices) queryBackground(q *queryRequest) error {
+	if s == nil || s.sWbemLocatorIDispatch == nil {
+		return fmt.Errorf("SWbemServices is not Initialized")
+	}
+	wmi := s.sWbemLocatorIDispatch //Should just rename in the code, but this will help as we break things apart
+	//fmt.Println("queryBackground: Starting")
+
+	dv := reflect.ValueOf(q.dst)
+	if dv.Kind() != reflect.Ptr || dv.IsNil() {
+		return ErrInvalidEntityType
+	}
+	dv = dv.Elem()
+	mat, elemType := checkMultiArg(dv)
+	if mat == multiArgTypeInvalid {
+		return ErrInvalidEntityType
+	}
+
+	// service is a SWbemServices
+	serviceRaw, err := oleutil.CallMethod(wmi, "ConnectServer", q.args...)
+	if err != nil {
+		return err
+	}
+	service := serviceRaw.ToIDispatch()
+	defer serviceRaw.Clear()
+
+	// result is a SWBemObjectSet
+	resultRaw, err := oleutil.CallMethod(service, "ExecQuery", q.query)
+	if err != nil {
+		return err
+	}
+	result := resultRaw.ToIDispatch()
+	defer resultRaw.Clear()
+
+	count, err := oleInt64(result, "Count")
+	if err != nil {
+		return err
+	}
+
+	enumProperty, err := result.GetProperty("_NewEnum")
+	if err != nil {
+		return err
+	}
+	defer enumProperty.Clear()
+
+	enum, err := enumProperty.ToIUnknown().IEnumVARIANT(ole.IID_IEnumVariant)
+	if err != nil {
+		return err
+	}
+	if enum == nil {
+		return fmt.Errorf("can't get IEnumVARIANT, enum is nil")
+	}
+	defer enum.Release()
+
+	// Initialize a slice with Count capacity
+	dv.Set(reflect.MakeSlice(dv.Type(), 0, int(count)))
+
+	var errFieldMismatch error
+	for itemRaw, length, err := enum.Next(1); length > 0; itemRaw, length, err = enum.Next(1) {
+		if err != nil {
+			return err
+		}
+
+		err := func() error {
+			// item is a SWbemObject, but really a Win32_Process
+			item := itemRaw.ToIDispatch()
+			defer item.Release()
+
+			ev := reflect.New(elemType)
+			if err = s.cWMIClient.loadEntity(ev.Interface(), item); err != nil {
+				if _, ok := err.(*ErrFieldMismatch); ok {
+					// We continue loading entities even in the face of field mismatch errors.
+					// If we encounter any other error, that other error is returned. Otherwise,
+					// an ErrFieldMismatch is returned.
+					errFieldMismatch = err
+				} else {
+					return err
+				}
+			}
+			if mat != multiArgTypeStructPtr {
+				ev = ev.Elem()
+			}
+			dv.Set(reflect.Append(dv, ev))
+			return nil
+		}()
+		if err != nil {
+			return err
+		}
+	}
+	//fmt.Println("queryBackground: Finished")
+	return errFieldMismatch
+}

vendor/github.com/StackExchange/wmi/swbemservices_test.go

@@ -0,0 +1,151 @@
+// +build windows
+
+package wmi
+
+import (
+	"fmt"
+	"runtime"
+	"testing"
+	"time"
+)
+
+func TestWbemQuery(t *testing.T) {
+	s, err := InitializeSWbemServices(DefaultClient)
+	if err != nil {
+		t.Fatalf("InitializeSWbemServices: %s", err)
+	}
+
+	var dst []Win32_Process
+	q := CreateQuery(&dst, "WHERE name='lsass.exe'")
+	errQuery := s.Query(q, &dst)
+	if errQuery != nil {
+		t.Fatalf("Query1: %s", errQuery)
+	}
+	count := len(dst)
+	if count < 1 {
+		t.Fatal("Query1: no results found for lsass.exe")
+	}
+	//fmt.Printf("dst[0].ProcessID=%d\n", dst[0].ProcessId)
+
+	q2 := CreateQuery(&dst, "WHERE name='svchost.exe'")
+	errQuery = s.Query(q2, &dst)
+	if errQuery != nil {
+		t.Fatalf("Query2: %s", errQuery)
+	}
+	count = len(dst)
+	if count < 1 {
+		t.Fatal("Query2: no results found for svchost.exe")
+	}
+	//for index, item := range dst {
+	//	fmt.Printf("dst[%d].ProcessID=%d\n", index, item.ProcessId)
+	//}
+	errClose := s.Close()
+	if errClose != nil {
+		t.Fatalf("Close: %s", errClose)
+	}
+}
+
+func TestWbemQueryNamespace(t *testing.T) {
+	s, err := InitializeSWbemServices(DefaultClient)
+	if err != nil {
+		t.Fatalf("InitializeSWbemServices: %s", err)
+	}
+	var dst []MSFT_NetAdapter
+	q := CreateQuery(&dst, "")
+	errQuery := s.Query(q, &dst, nil, "root\\StandardCimv2")
+	if errQuery != nil {
+		t.Fatalf("Query: %s", errQuery)
+	}
+	count := len(dst)
+	if count < 1 {
+		t.Fatal("Query: no results found for MSFT_NetAdapter in root\\StandardCimv2")
+	}
+	errClose := s.Close()
+	if errClose != nil {
+		t.Fatalf("Close: %s", errClose)
+	}
+}
+
+// Run using: go test -run TestWbemMemory -timeout 60m
+func TestWbemMemory(t *testing.T) {
+	s, err := InitializeSWbemServices(DefaultClient)
+	if err != nil {
+		t.Fatalf("InitializeSWbemServices: %s", err)
+	}
+	start := time.Now()
+	limit := 500000
+	fmt.Printf("Benchmark Iterations: %d (Memory should stabilize around 7MB after ~3000)\n", limit)
+	var privateMB, allocMB, allocTotalMB float64
+	for i := 0; i < limit; i++ {
+		privateMB, allocMB, allocTotalMB = WbemGetMemoryUsageMB(s)
+		if i%100 == 0 {
+			privateMB, allocMB, allocTotalMB = WbemGetMemoryUsageMB(s)
+			fmt.Printf("Time: %4ds  Count: %5d  Private Memory: %5.1fMB  MemStats.Alloc: %4.1fMB  MemStats.TotalAlloc: %5.1fMB\n", time.Now().Sub(start)/time.Second, i, privateMB, allocMB, allocTotalMB)
+		}
+	}
+	errClose := s.Close()
+	if errClose != nil {
+		t.Fatalf("Close: %s", err)
+	}
+	fmt.Printf("Final Time: %4ds  Private Memory: %5.1fMB  MemStats.Alloc: %4.1fMB  MemStats.TotalAlloc: %5.1fMB\n", time.Now().Sub(start)/time.Second, privateMB, allocMB, allocTotalMB)
+}
+
+func WbemGetMemoryUsageMB(s *SWbemServices) (float64, float64, float64) {
+	runtime.ReadMemStats(&mMemoryUsageMB)
+	errGetMemoryUsageMB = s.Query(qGetMemoryUsageMB, &dstGetMemoryUsageMB)
+	if errGetMemoryUsageMB != nil {
+		fmt.Println("ERROR GetMemoryUsage", errGetMemoryUsageMB)
+		return 0, 0, 0
+	}
+	return float64(dstGetMemoryUsageMB[0].WorkingSetPrivate) / MB, float64(mMemoryUsageMB.Alloc) / MB, float64(mMemoryUsageMB.TotalAlloc) / MB
+}
+
+//Run all benchmarks (should run for at least 60s to get a stable number):
+//go test -run=NONE -bench=Version -benchtime=120s
+
+//Individual benchmarks:
+//go test -run=NONE -bench=NewVersion -benchtime=120s
+func BenchmarkNewVersion(b *testing.B) {
+	s, err := InitializeSWbemServices(DefaultClient)
+	if err != nil {
+		b.Fatalf("InitializeSWbemServices: %s", err)
+	}
+	var dst []Win32_OperatingSystem
+	q := CreateQuery(&dst, "")
+	for n := 0; n < b.N; n++ {
+		errQuery := s.Query(q, &dst)
+		if errQuery != nil {
+			b.Fatalf("Query%d: %s", n, errQuery)
+		}
+		count := len(dst)
+		if count < 1 {
+			b.Fatalf("Query%d: no results found for Win32_OperatingSystem", n)
+		}
+	}
+	errClose := s.Close()
+	if errClose != nil {
+		b.Fatalf("Close: %s", errClose)
+	}
+}
+
+//go test -run=NONE -bench=OldVersion -benchtime=120s
+func BenchmarkOldVersion(b *testing.B) {
+	var dst []Win32_OperatingSystem
+	q := CreateQuery(&dst, "")
+	for n := 0; n < b.N; n++ {
+		errQuery := Query(q, &dst)
+		if errQuery != nil {
+			b.Fatalf("Query%d: %s", n, errQuery)
+		}
+		count := len(dst)
+		if count < 1 {
+			b.Fatalf("Query%d: no results found for Win32_OperatingSystem", n)
+		}
+	}
+}
+
+type MSFT_NetAdapter struct {
+	Name              string
+	InterfaceIndex    int
+	DriverDescription string
+}

vendor/github.com/StackExchange/wmi/wmi.go

@@ -0,0 +1,490 @@
+// +build windows
+
+/*
+Package wmi provides a WQL interface for WMI on Windows.
+
+Example code to print names of running processes:
+
+	type Win32_Process struct {
+		Name string
+	}
+
+	func main() {
+		var dst []Win32_Process
+		q := wmi.CreateQuery(&dst, "")
+		err := wmi.Query(q, &dst)
+		if err != nil {
+			log.Fatal(err)
+		}
+		for i, v := range dst {
+			println(i, v.Name)
+		}
+	}
+
+*/
+package wmi
+
+import (
+	"bytes"
+	"errors"
+	"fmt"
+	"log"
+	"os"
+	"reflect"
+	"runtime"
+	"strconv"
+	"strings"
+	"sync"
+	"time"
+
+	"github.com/go-ole/go-ole"
+	"github.com/go-ole/go-ole/oleutil"
+)
+
+var l = log.New(os.Stdout, "", log.LstdFlags)
+
+var (
+	ErrInvalidEntityType = errors.New("wmi: invalid entity type")
+	// ErrNilCreateObject is the error returned if CreateObject returns nil even
+	// if the error was nil.
+	ErrNilCreateObject = errors.New("wmi: create object returned nil")
+	lock               sync.Mutex
+)
+
+// S_FALSE is returned by CoInitializeEx if it was already called on this thread.
+const S_FALSE = 0x00000001
+
+// QueryNamespace invokes Query with the given namespace on the local machine.
+func QueryNamespace(query string, dst interface{}, namespace string) error {
+	return Query(query, dst, nil, namespace)
+}
+
+// Query runs the WQL query and appends the values to dst.
+//
+// dst must have type *[]S or *[]*S, for some struct type S. Fields selected in
+// the query must have the same name in dst. Supported types are all signed and
+// unsigned integers, time.Time, string, bool, or a pointer to one of those.
+// Array types are not supported.
+//
+// By default, the local machine and default namespace are used. These can be
+// changed using connectServerArgs. See
+// http://msdn.microsoft.com/en-us/library/aa393720.aspx for details.
+//
+// Query is a wrapper around DefaultClient.Query.
+func Query(query string, dst interface{}, connectServerArgs ...interface{}) error {
+	if DefaultClient.SWbemServicesClient == nil {
+		return DefaultClient.Query(query, dst, connectServerArgs...)
+	}
+	return DefaultClient.SWbemServicesClient.Query(query, dst, connectServerArgs...)
+}
+
+// A Client is an WMI query client.
+//
+// Its zero value (DefaultClient) is a usable client.
+type Client struct {
+	// NonePtrZero specifies if nil values for fields which aren't pointers
+	// should be returned as the field types zero value.
+	//
+	// Setting this to true allows stucts without pointer fields to be used
+	// without the risk failure should a nil value returned from WMI.
+	NonePtrZero bool
+
+	// PtrNil specifies if nil values for pointer fields should be returned
+	// as nil.
+	//
+	// Setting this to true will set pointer fields to nil where WMI
+	// returned nil, otherwise the types zero value will be returned.
+	PtrNil bool
+
+	// AllowMissingFields specifies that struct fields not present in the
+	// query result should not result in an error.
+	//
+	// Setting this to true allows custom queries to be used with full
+	// struct definitions instead of having to define multiple structs.
+	AllowMissingFields bool
+
+	// SWbemServiceClient is an optional SWbemServices object that can be
+	// initialized and then reused across multiple queries. If it is null
+	// then the method will initialize a new temporary client each time.
+	SWbemServicesClient *SWbemServices
+}
+
+// DefaultClient is the default Client and is used by Query, QueryNamespace
+var DefaultClient = &Client{}
+
+// Query runs the WQL query and appends the values to dst.
+//
+// dst must have type *[]S or *[]*S, for some struct type S. Fields selected in
+// the query must have the same name in dst. Supported types are all signed and
+// unsigned integers, time.Time, string, bool, or a pointer to one of those.
+// Array types are not supported.
+//
+// By default, the local machine and default namespace are used. These can be
+// changed using connectServerArgs. See
+// http://msdn.microsoft.com/en-us/library/aa393720.aspx for details.
+func (c *Client) Query(query string, dst interface{}, connectServerArgs ...interface{}) error {
+	dv := reflect.ValueOf(dst)
+	if dv.Kind() != reflect.Ptr || dv.IsNil() {
+		return ErrInvalidEntityType
+	}
+	dv = dv.Elem()
+	mat, elemType := checkMultiArg(dv)
+	if mat == multiArgTypeInvalid {
+		return ErrInvalidEntityType
+	}
+
+	lock.Lock()
+	defer lock.Unlock()
+	runtime.LockOSThread()
+	defer runtime.UnlockOSThread()
+
+	err := ole.CoInitializeEx(0, ole.COINIT_MULTITHREADED)
+	if err != nil {
+		oleCode := err.(*ole.OleError).Code()
+		if oleCode != ole.S_OK && oleCode != S_FALSE {
+			return err
+		}
+	}
+	defer ole.CoUninitialize()
+
+	unknown, err := oleutil.CreateObject("WbemScripting.SWbemLocator")
+	if err != nil {
+		return err
+	} else if unknown == nil {
+		return ErrNilCreateObject
+	}
+	defer unknown.Release()
+
+	wmi, err := unknown.QueryInterface(ole.IID_IDispatch)
+	if err != nil {
+		return err
+	}
+	defer wmi.Release()
+
+	// service is a SWbemServices
+	serviceRaw, err := oleutil.CallMethod(wmi, "ConnectServer", connectServerArgs...)
+	if err != nil {
+		return err
+	}
+	service := serviceRaw.ToIDispatch()
+	defer serviceRaw.Clear()
+
+	// result is a SWBemObjectSet
+	resultRaw, err := oleutil.CallMethod(service, "ExecQuery", query)
+	if err != nil {
+		return err
+	}
+	result := resultRaw.ToIDispatch()
+	defer resultRaw.Clear()
+
+	count, err := oleInt64(result, "Count")
+	if err != nil {
+		return err
+	}
+
+	enumProperty, err := result.GetProperty("_NewEnum")
+	if err != nil {
+		return err
+	}
+	defer enumProperty.Clear()
+
+	enum, err := enumProperty.ToIUnknown().IEnumVARIANT(ole.IID_IEnumVariant)
+	if err != nil {
+		return err
+	}
+	if enum == nil {
+		return fmt.Errorf("can't get IEnumVARIANT, enum is nil")
+	}
+	defer enum.Release()
+
+	// Initialize a slice with Count capacity
+	dv.Set(reflect.MakeSlice(dv.Type(), 0, int(count)))
+
+	var errFieldMismatch error
+	for itemRaw, length, err := enum.Next(1); length > 0; itemRaw, length, err = enum.Next(1) {
+		if err != nil {
+			return err
+		}
+
+		err := func() error {
+			// item is a SWbemObject, but really a Win32_Process
+			item := itemRaw.ToIDispatch()
+			defer item.Release()
+
+			ev := reflect.New(elemType)
+			if err = c.loadEntity(ev.Interface(), item); err != nil {
+				if _, ok := err.(*ErrFieldMismatch); ok {
+					// We continue loading entities even in the face of field mismatch errors.
+					// If we encounter any other error, that other error is returned. Otherwise,
+					// an ErrFieldMismatch is returned.
+					errFieldMismatch = err
+				} else {
+					return err
+				}
+			}
+			if mat != multiArgTypeStructPtr {
+				ev = ev.Elem()
+			}
+			dv.Set(reflect.Append(dv, ev))
+			return nil
+		}()
+		if err != nil {
+			return err
+		}
+	}
+	return errFieldMismatch
+}
+
+// ErrFieldMismatch is returned when a field is to be loaded into a different
+// type than the one it was stored from, or when a field is missing or
+// unexported in the destination struct.
+// StructType is the type of the struct pointed to by the destination argument.
+type ErrFieldMismatch struct {
+	StructType reflect.Type
+	FieldName  string
+	Reason     string
+}
+
+func (e *ErrFieldMismatch) Error() string {
+	return fmt.Sprintf("wmi: cannot load field %q into a %q: %s",
+		e.FieldName, e.StructType, e.Reason)
+}
+
+var timeType = reflect.TypeOf(time.Time{})
+
+// loadEntity loads a SWbemObject into a struct pointer.
+func (c *Client) loadEntity(dst interface{}, src *ole.IDispatch) (errFieldMismatch error) {
+	v := reflect.ValueOf(dst).Elem()
+	for i := 0; i < v.NumField(); i++ {
+		f := v.Field(i)
+		of := f
+		isPtr := f.Kind() == reflect.Ptr
+		if isPtr {
+			ptr := reflect.New(f.Type().Elem())
+			f.Set(ptr)
+			f = f.Elem()
+		}
+		n := v.Type().Field(i).Name
+		if !f.CanSet() {
+			return &ErrFieldMismatch{
+				StructType: of.Type(),
+				FieldName:  n,
+				Reason:     "CanSet() is false",
+			}
+		}
+		prop, err := oleutil.GetProperty(src, n)
+		if err != nil {
+			if !c.AllowMissingFields {
+				errFieldMismatch = &ErrFieldMismatch{
+					StructType: of.Type(),
+					FieldName:  n,
+					Reason:     "no such struct field",
+				}
+			}
+			continue
+		}
+		defer prop.Clear()
+
+		if prop.VT == 0x1 { //VT_NULL
+			continue
+		}
+
+		switch val := prop.Value().(type) {
+		case int8, int16, int32, int64, int:
+			v := reflect.ValueOf(val).Int()
+			switch f.Kind() {
+			case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
+				f.SetInt(v)
+			case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64:
+				f.SetUint(uint64(v))
+			default:
+				return &ErrFieldMismatch{
+					StructType: of.Type(),
+					FieldName:  n,
+					Reason:     "not an integer class",
+				}
+			}
+		case uint8, uint16, uint32, uint64:
+			v := reflect.ValueOf(val).Uint()
+			switch f.Kind() {
+			case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
+				f.SetInt(int64(v))
+			case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64:
+				f.SetUint(v)
+			default:
+				return &ErrFieldMismatch{
+					StructType: of.Type(),
+					FieldName:  n,
+					Reason:     "not an integer class",
+				}
+			}
+		case string:
+			switch f.Kind() {
+			case reflect.String:
+				f.SetString(val)
+			case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
+				iv, err := strconv.ParseInt(val, 10, 64)
+				if err != nil {
+					return err
+				}
+				f.SetInt(iv)
+			case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64:
+				uv, err := strconv.ParseUint(val, 10, 64)
+				if err != nil {
+					return err
+				}
+				f.SetUint(uv)
+			case reflect.Struct:
+				switch f.Type() {
+				case timeType:
+					if len(val) == 25 {
+						mins, err := strconv.Atoi(val[22:])
+						if err != nil {
+							return err
+						}
+						val = val[:22] + fmt.Sprintf("%02d%02d", mins/60, mins%60)
+					}
+					t, err := time.Parse("20060102150405.000000-0700", val)
+					if err != nil {
+						return err
+					}
+					f.Set(reflect.ValueOf(t))
+				}
+			}
+		case bool:
+			switch f.Kind() {
+			case reflect.Bool:
+				f.SetBool(val)
+			default:
+				return &ErrFieldMismatch{
+					StructType: of.Type(),
+					FieldName:  n,
+					Reason:     "not a bool",
+				}
+			}
+		case float32:
+			switch f.Kind() {
+			case reflect.Float32:
+				f.SetFloat(float64(val))
+			default:
+				return &ErrFieldMismatch{
+					StructType: of.Type(),
+					FieldName:  n,
+					Reason:     "not a Float32",
+				}
+			}
+		default:
+			if f.Kind() == reflect.Slice {
+				switch f.Type().Elem().Kind() {
+				case reflect.String:
+					safeArray := prop.ToArray()
+					if safeArray != nil {
+						arr := safeArray.ToValueArray()
+						fArr := reflect.MakeSlice(f.Type(), len(arr), len(arr))
+						for i, v := range arr {
+							s := fArr.Index(i)
+							s.SetString(v.(string))
+						}
+						f.Set(fArr)
+					}
+				case reflect.Uint8:
+					safeArray := prop.ToArray()
+					if safeArray != nil {
+						arr := safeArray.ToValueArray()
+						fArr := reflect.MakeSlice(f.Type(), len(arr), len(arr))
+						for i, v := range arr {
+							s := fArr.Index(i)
+							s.SetUint(reflect.ValueOf(v).Uint())
+						}
+						f.Set(fArr)
+					}
+				default:
+					return &ErrFieldMismatch{
+						StructType: of.Type(),
+						FieldName:  n,
+						Reason:     fmt.Sprintf("unsupported slice type (%T)", val),
+					}
+				}
+			} else {
+				typeof := reflect.TypeOf(val)
+				if typeof == nil && (isPtr || c.NonePtrZero) {
+					if (isPtr && c.PtrNil) || (!isPtr && c.NonePtrZero) {
+						of.Set(reflect.Zero(of.Type()))
+					}
+					break
+				}
+				return &ErrFieldMismatch{
+					StructType: of.Type(),
+					FieldName:  n,
+					Reason:     fmt.Sprintf("unsupported type (%T)", val),
+				}
+			}
+		}
+	}
+	return errFieldMismatch
+}
+
+type multiArgType int
+
+const (
+	multiArgTypeInvalid multiArgType = iota
+	multiArgTypeStruct
+	multiArgTypeStructPtr
+)
+
+// checkMultiArg checks that v has type []S, []*S for some struct type S.
+//
+// It returns what category the slice's elements are, and the reflect.Type
+// that represents S.
+func checkMultiArg(v reflect.Value) (m multiArgType, elemType reflect.Type) {
+	if v.Kind() != reflect.Slice {
+		return multiArgTypeInvalid, nil
+	}
+	elemType = v.Type().Elem()
+	switch elemType.Kind() {
+	case reflect.Struct:
+		return multiArgTypeStruct, elemType
+	case reflect.Ptr:
+		elemType = elemType.Elem()
+		if elemType.Kind() == reflect.Struct {
+			return multiArgTypeStructPtr, elemType
+		}
+	}
+	return multiArgTypeInvalid, nil
+}
+
+func oleInt64(item *ole.IDispatch, prop string) (int64, error) {
+	v, err := oleutil.GetProperty(item, prop)
+	if err != nil {
+		return 0, err
+	}
+	defer v.Clear()
+
+	i := int64(v.Val)
+	return i, nil
+}
+
+// CreateQuery returns a WQL query string that queries all columns of src. where
+// is an optional string that is appended to the query, to be used with WHERE
+// clauses. In such a case, the "WHERE" string should appear at the beginning.
+func CreateQuery(src interface{}, where string) string {
+	var b bytes.Buffer
+	b.WriteString("SELECT ")
+	s := reflect.Indirect(reflect.ValueOf(src))
+	t := s.Type()
+	if s.Kind() == reflect.Slice {
+		t = t.Elem()
+	}
+	if t.Kind() != reflect.Struct {
+		return ""
+	}
+	var fields []string
+	for i := 0; i < t.NumField(); i++ {
+		fields = append(fields, t.Field(i).Name)
+	}
+	b.WriteString(strings.Join(fields, ", "))
+	b.WriteString(" FROM ")
+	b.WriteString(t.Name())
+	b.WriteString(" " + where)
+	return b.String()
+}

vendor/github.com/StackExchange/wmi/wmi_test.go

@@ -0,0 +1,544 @@
+// +build windows
+
+package wmi
+
+import (
+	"encoding/json"
+	"fmt"
+	"os"
+	"reflect"
+	"runtime"
+	"runtime/debug"
+	"sync"
+	"testing"
+	"time"
+
+	ole "github.com/go-ole/go-ole"
+	"github.com/go-ole/go-ole/oleutil"
+)
+
+func TestQuery(t *testing.T) {
+	var dst []Win32_Process
+	q := CreateQuery(&dst, "")
+	err := Query(q, &dst)
+	if err != nil {
+		t.Fatal(err)
+	}
+}
+
+func TestFieldMismatch(t *testing.T) {
+	type s struct {
+		Name        string
+		HandleCount uint32
+		Blah        uint32
+	}
+	var dst []s
+	err := Query("SELECT Name, HandleCount FROM Win32_Process", &dst)
+	if err == nil || err.Error() != `wmi: cannot load field "Blah" into a "uint32": no such struct field` {
+		t.Error("Expected err field mismatch")
+	}
+}
+
+func TestStrings(t *testing.T) {
+	printed := false
+	f := func() {
+		var dst []Win32_Process
+		zeros := 0
+		q := CreateQuery(&dst, "")
+		for i := 0; i < 5; i++ {
+			err := Query(q, &dst)
+			if err != nil {
+				t.Fatal(err, q)
+			}
+			for _, d := range dst {
+				v := reflect.ValueOf(d)
+				for j := 0; j < v.NumField(); j++ {
+					f := v.Field(j)
+					if f.Kind() != reflect.String {
+						continue
+					}
+					s := f.Interface().(string)
+					if len(s) > 0 && s[0] == '\u0000' {
+						zeros++
+						if !printed {
+							printed = true
+							j, _ := json.MarshalIndent(&d, "", "  ")
+							t.Log("Example with \\u0000:\n", string(j))
+						}
+					}
+				}
+			}
+			fmt.Println("iter", i, "zeros:", zeros)
+		}
+		if zeros > 0 {
+			t.Error("> 0 zeros")
+		}
+	}
+
+	fmt.Println("Disabling GC")
+	debug.SetGCPercent(-1)
+	f()
+	fmt.Println("Enabling GC")
+	debug.SetGCPercent(100)
+	f()
+}
+
+func TestNamespace(t *testing.T) {
+	var dst []Win32_Process
+	q := CreateQuery(&dst, "")
+	err := QueryNamespace(q, &dst, `root\CIMV2`)
+	if err != nil {
+		t.Fatal(err)
+	}
+	dst = nil
+	err = QueryNamespace(q, &dst, `broken\nothing`)
+	if err == nil {
+		t.Fatal("expected error")
+	}
+}
+
+func TestCreateQuery(t *testing.T) {
+	type TestStruct struct {
+		Name  string
+		Count int
+	}
+	var dst []TestStruct
+	output := "SELECT Name, Count FROM TestStruct WHERE Count > 2"
+	tests := []interface{}{
+		&dst,
+		dst,
+		TestStruct{},
+		&TestStruct{},
+	}
+	for i, test := range tests {
+		if o := CreateQuery(test, "WHERE Count > 2"); o != output {
+			t.Error("bad output on", i, o)
+		}
+	}
+	if CreateQuery(3, "") != "" {
+		t.Error("expected empty string")
+	}
+}
+
+// Run using: go test -run TestMemoryWMISimple -timeout 60m
+func _TestMemoryWMISimple(t *testing.T) {
+	start := time.Now()
+	limit := 500000
+	fmt.Printf("Benchmark Iterations: %d (Memory should stabilize around 7MB after ~3000)\n", limit)
+	var privateMB, allocMB, allocTotalMB float64
+	//var dst []Win32_PerfRawData_PerfDisk_LogicalDisk
+	//q := CreateQuery(&dst, "")
+	for i := 0; i < limit; i++ {
+		privateMB, allocMB, allocTotalMB = GetMemoryUsageMB()
+		if i%1000 == 0 {
+			//privateMB, allocMB, allocTotalMB = GetMemoryUsageMB()
+			fmt.Printf("Time: %4ds  Count: %5d  Private Memory: %5.1fMB  MemStats.Alloc: %4.1fMB  MemStats.TotalAlloc: %5.1fMB\n", time.Now().Sub(start)/time.Second, i, privateMB, allocMB, allocTotalMB)
+		}
+		//Query(q, &dst)
+	}
+	//privateMB, allocMB, allocTotalMB = GetMemoryUsageMB()
+	fmt.Printf("Final Time: %4ds  Private Memory: %5.1fMB  MemStats.Alloc: %4.1fMB  MemStats.TotalAlloc: %5.1fMB\n", time.Now().Sub(start)/time.Second, privateMB, allocMB, allocTotalMB)
+}
+
+func _TestMemoryWMIConcurrent(t *testing.T) {
+	if testing.Short() {
+		return
+	}
+	start := time.Now()
+	limit := 50000
+	fmt.Println("Total Iterations:", limit)
+	fmt.Println("No panics mean it succeeded. Other errors are OK. Memory should stabilize after ~1500 iterations.")
+	runtime.GOMAXPROCS(2)
+	wg := sync.WaitGroup{}
+	wg.Add(2)
+	go func() {
+		for i := 0; i < limit; i++ {
+			if i%500 == 0 {
+				privateMB, allocMB, allocTotalMB := GetMemoryUsageMB()
+				fmt.Printf("Time: %4ds  Count: %4d  Private Memory: %5.1fMB  MemStats.Alloc: %4.1fMB  MemStats.TotalAlloc: %5.1fMB\n", time.Now().Sub(start)/time.Second, i, privateMB, allocMB, allocTotalMB)
+			}
+			var dst []Win32_PerfRawData_PerfDisk_LogicalDisk
+			q := CreateQuery(&dst, "")
+			err := Query(q, &dst)
+			if err != nil {
+				fmt.Println("ERROR disk", err)
+			}
+		}
+		wg.Done()
+	}()
+	go func() {
+		for i := 0; i > -limit; i-- {
+			//if i%500 == 0 {
+			//	fmt.Println(i)
+			//}
+			var dst []Win32_OperatingSystem
+			q := CreateQuery(&dst, "")
+			err := Query(q, &dst)
+			if err != nil {
+				fmt.Println("ERROR OS", err)
+			}
+		}
+		wg.Done()
+	}()
+	wg.Wait()
+	//privateMB, allocMB, allocTotalMB := GetMemoryUsageMB()
+	//fmt.Printf("Final Private Memory: %5.1fMB  MemStats.Alloc: %4.1fMB  MemStats.TotalAlloc: %5.1fMB\n", privateMB, allocMB, allocTotalMB)
+}
+
+var lockthread sync.Mutex
+var refcount1 int32
+var refcount2 int32
+var refcount3 int32
+
+// Test function showing memory leak in unknown.QueryInterface call on Server2016/Windows10
+func getRSS(url string, xmlhttp *ole.IDispatch, MinimalTest bool) (int, error) {
+
+	// call using url,nil to see memory leak
+	if xmlhttp == nil {
+		//Initialize inside loop if not passed in from outer section
+		lockthread.Lock()
+		defer lockthread.Unlock()
+		runtime.LockOSThread()
+		defer runtime.UnlockOSThread()
+
+		err := ole.CoInitializeEx(0, ole.COINIT_MULTITHREADED)
+		if err != nil {
+			oleCode := err.(*ole.OleError).Code()
+			if oleCode != ole.S_OK && oleCode != S_FALSE {
+				return 0, err
+			}
+		}
+		defer ole.CoUninitialize()
+
+		//fmt.Println("CreateObject Microsoft.XMLHTTP")
+		unknown, err := oleutil.CreateObject("Microsoft.XMLHTTP")
+		if err != nil {
+			return 0, err
+		}
+		defer func() { refcount1 += xmlhttp.Release() }()
+
+		//Memory leak occurs here
+		xmlhttp, err = unknown.QueryInterface(ole.IID_IDispatch)
+		if err != nil {
+			return 0, err
+		}
+		defer func() { refcount2 += xmlhttp.Release() }()
+		//Nothing below this really matters. Can be removed if you want a tighter loop
+	}
+
+	//fmt.Printf("Download %s\n", url)
+	openRaw, err := oleutil.CallMethod(xmlhttp, "open", "GET", url, false)
+	if err != nil {
+		return 0, err
+	}
+	defer openRaw.Clear()
+
+	if MinimalTest {
+		return 1, nil
+	}
+
+	//Initiate http request
+	sendRaw, err := oleutil.CallMethod(xmlhttp, "send", nil)
+	if err != nil {
+		return 0, err
+	}
+	defer sendRaw.Clear()
+	state := -1 // https://developer.mozilla.org/en-US/docs/Web/API/XMLHttpRequest/readyState
+	for state != 4 {
+		time.Sleep(5 * time.Millisecond)
+		stateRaw := oleutil.MustGetProperty(xmlhttp, "readyState")
+		state = int(stateRaw.Val)
+		stateRaw.Clear()
+	}
+
+	responseXMLRaw := oleutil.MustGetProperty(xmlhttp, "responseXml")
+	responseXML := responseXMLRaw.ToIDispatch()
+	defer responseXMLRaw.Clear()
+	itemsRaw := oleutil.MustCallMethod(responseXML, "selectNodes", "/rdf:RDF/item")
+	items := itemsRaw.ToIDispatch()
+	defer itemsRaw.Clear()
+	lengthRaw := oleutil.MustGetProperty(items, "length")
+	defer lengthRaw.Clear()
+	length := int(lengthRaw.Val)
+
+	/* This just bloats the TotalAlloc and slows the test down. Doesn't effect Private Working Set
+	for n := 0; n < length; n++ {
+		itemRaw := oleutil.MustGetProperty(items, "item", n)
+		item := itemRaw.ToIDispatch()
+		title := oleutil.MustCallMethod(item, "selectSingleNode", "title").ToIDispatch()
+
+		//fmt.Println(oleutil.MustGetProperty(title, "text").ToString())
+		textRaw := oleutil.MustGetProperty(title, "text")
+		textRaw.ToString()
+
+		link := oleutil.MustCallMethod(item, "selectSingleNode", "link").ToIDispatch()
+		//fmt.Println("  " + oleutil.MustGetProperty(link, "text").ToString())
+		textRaw2 := oleutil.MustGetProperty(link, "text")
+		textRaw2.ToString()
+
+		textRaw2.Clear()
+		link.Release()
+		textRaw.Clear()
+		title.Release()
+		itemRaw.Clear()
+	}
+	*/
+	return length, nil
+}
+
+// Testing go-ole/oleutil
+// Run using: go test -run TestMemoryOLE -timeout 60m
+// Code from https://github.com/go-ole/go-ole/blob/master/example/msxml/rssreader.go
+func _TestMemoryOLE(t *testing.T) {
+	defer func() {
+		if r := recover(); r != nil {
+			t.Error(r)
+		}
+	}()
+
+	start := time.Now()
+	limit := 50000000
+	url := "http://localhost/slashdot.xml" //http://rss.slashdot.org/Slashdot/slashdot"
+	fmt.Printf("Benchmark Iterations: %d (Memory should stabilize around 8MB to 12MB after ~2k full or 250k minimal)\n", limit)
+
+	//On Server 2016 or Windows 10 changing leakMemory=true will cause it to leak ~1.5MB per 10000 calls to unknown.QueryInterface
+	leakMemory := true
+
+	////////////////////////////////////////
+	//Start outer section
+	var unknown *ole.IUnknown
+	var xmlhttp *ole.IDispatch
+	if !leakMemory {
+		runtime.LockOSThread()
+		defer runtime.UnlockOSThread()
+
+		err := ole.CoInitializeEx(0, ole.COINIT_MULTITHREADED)
+		if err != nil {
+			oleCode := err.(*ole.OleError).Code()
+			if oleCode != ole.S_OK && oleCode != S_FALSE {
+				t.Fatal(err)
+			}
+		}
+		defer ole.CoUninitialize()
+
+		//fmt.Println("CreateObject Microsoft.XMLHTTP")
+		unknown, err = oleutil.CreateObject("Microsoft.XMLHTTP")
+		if err != nil {
+			t.Fatal(err)
+		}
+		defer unknown.Release()
+
+		//Memory leak starts here
+		xmlhttp, err = unknown.QueryInterface(ole.IID_IDispatch)
+		if err != nil {
+			t.Fatal(err)
+		}
+		defer xmlhttp.Release()
+	}
+	//End outer section
+	////////////////////////////////////////
+
+	totalItems := uint64(0)
+	for i := 0; i < limit; i++ {
+		if i%2000 == 0 {
+			privateMB, allocMB, allocTotalMB := GetMemoryUsageMB()
+			fmt.Printf("Time: %4ds  Count: %7d  Private Memory: %5.1fMB  MemStats.Alloc: %4.1fMB  MemStats.TotalAlloc: %5.1fMB  %7d/%7d\n", time.Now().Sub(start)/time.Second, i, privateMB, allocMB, allocTotalMB, refcount1, refcount2)
+		}
+		//This should use less than 10MB for 1 million iterations if xmlhttp was initialized above
+		//On Server 2016 or Windows 10 changing leakMemory=true above will cause it to leak ~1.5MB per 10000 calls to unknown.QueryInterface
+		count, err := getRSS(url, xmlhttp, true) //last argument is for Minimal test. Doesn't effect leak just overall allocations/time
+		if err != nil {
+			t.Fatal(err)
+		}
+		totalItems += uint64(count)
+	}
+	privateMB, allocMB, allocTotalMB := GetMemoryUsageMB()
+	fmt.Printf("Final totalItems: %d  Private Memory: %5.1fMB  MemStats.Alloc: %4.1fMB  MemStats.TotalAlloc: %5.1fMB\n", totalItems, privateMB, allocMB, allocTotalMB)
+}
+
+const MB = 1024 * 1024
+
+var (
+	mMemoryUsageMB      runtime.MemStats
+	errGetMemoryUsageMB error
+	dstGetMemoryUsageMB []Win32_PerfRawData_PerfProc_Process
+	filterProcessID     = fmt.Sprintf("WHERE IDProcess = %d", os.Getpid())
+	qGetMemoryUsageMB   = CreateQuery(&dstGetMemoryUsageMB, filterProcessID)
+)
+
+func GetMemoryUsageMB() (float64, float64, float64) {
+	runtime.ReadMemStats(&mMemoryUsageMB)
+	//errGetMemoryUsageMB = nil //Query(qGetMemoryUsageMB, &dstGetMemoryUsageMB) float64(dstGetMemoryUsageMB[0].WorkingSetPrivate)
+	errGetMemoryUsageMB = Query(qGetMemoryUsageMB, &dstGetMemoryUsageMB)
+	if errGetMemoryUsageMB != nil {
+		fmt.Println("ERROR GetMemoryUsage", errGetMemoryUsageMB)
+		return 0, 0, 0
+	}
+	return float64(dstGetMemoryUsageMB[0].WorkingSetPrivate) / MB, float64(mMemoryUsageMB.Alloc) / MB, float64(mMemoryUsageMB.TotalAlloc) / MB
+}
+
+type Win32_PerfRawData_PerfProc_Process struct {
+	IDProcess         uint32
+	WorkingSetPrivate uint64
+}
+
+type Win32_Process struct {
+	CSCreationClassName        string
+	CSName                     string
+	Caption                    *string
+	CommandLine                *string
+	CreationClassName          string
+	CreationDate               *time.Time
+	Description                *string
+	ExecutablePath             *string
+	ExecutionState             *uint16
+	Handle                     string
+	HandleCount                uint32
+	InstallDate                *time.Time
+	KernelModeTime             uint64
+	MaximumWorkingSetSize      *uint32
+	MinimumWorkingSetSize      *uint32
+	Name                       string
+	OSCreationClassName        string
+	OSName                     string
+	OtherOperationCount        uint64
+	OtherTransferCount         uint64
+	PageFaults                 uint32
+	PageFileUsage              uint32
+	ParentProcessId            uint32
+	PeakPageFileUsage          uint32
+	PeakVirtualSize            uint64
+	PeakWorkingSetSize         uint32
+	Priority                   uint32
+	PrivatePageCount           uint64
+	ProcessId                  uint32
+	QuotaNonPagedPoolUsage     uint32
+	QuotaPagedPoolUsage        uint32
+	QuotaPeakNonPagedPoolUsage uint32
+	QuotaPeakPagedPoolUsage    uint32
+	ReadOperationCount         uint64
+	ReadTransferCount          uint64
+	SessionId                  uint32
+	Status                     *string
+	TerminationDate            *time.Time
+	ThreadCount                uint32
+	UserModeTime               uint64
+	VirtualSize                uint64
+	WindowsVersion             string
+	WorkingSetSize             uint64
+	WriteOperationCount        uint64
+	WriteTransferCount         uint64
+}
+
+type Win32_PerfRawData_PerfDisk_LogicalDisk struct {
+	AvgDiskBytesPerRead          uint64
+	AvgDiskBytesPerRead_Base     uint32
+	AvgDiskBytesPerTransfer      uint64
+	AvgDiskBytesPerTransfer_Base uint32
+	AvgDiskBytesPerWrite         uint64
+	AvgDiskBytesPerWrite_Base    uint32
+	AvgDiskQueueLength           uint64
+	AvgDiskReadQueueLength       uint64
+	AvgDiskSecPerRead            uint32
+	AvgDiskSecPerRead_Base       uint32
+	AvgDiskSecPerTransfer        uint32
+	AvgDiskSecPerTransfer_Base   uint32
+	AvgDiskSecPerWrite           uint32
+	AvgDiskSecPerWrite_Base      uint32
+	AvgDiskWriteQueueLength      uint64
+	Caption                      *string
+	CurrentDiskQueueLength       uint32
+	Description                  *string
+	DiskBytesPerSec              uint64
+	DiskReadBytesPerSec          uint64
+	DiskReadsPerSec              uint32
+	DiskTransfersPerSec          uint32
+	DiskWriteBytesPerSec         uint64
+	DiskWritesPerSec             uint32
+	FreeMegabytes                uint32
+	Frequency_Object             uint64
+	Frequency_PerfTime           uint64
+	Frequency_Sys100NS           uint64
+	Name                         string
+	PercentDiskReadTime          uint64
+	PercentDiskReadTime_Base     uint64
+	PercentDiskTime              uint64
+	PercentDiskTime_Base         uint64
+	PercentDiskWriteTime         uint64
+	PercentDiskWriteTime_Base    uint64
+	PercentFreeSpace             uint32
+	PercentFreeSpace_Base        uint32
+	PercentIdleTime              uint64
+	PercentIdleTime_Base         uint64
+	SplitIOPerSec                uint32
+	Timestamp_Object             uint64
+	Timestamp_PerfTime           uint64
+	Timestamp_Sys100NS           uint64
+}
+
+type Win32_OperatingSystem struct {
+	BootDevice                                string
+	BuildNumber                               string
+	BuildType                                 string
+	Caption                                   *string
+	CodeSet                                   string
+	CountryCode                               string
+	CreationClassName                         string
+	CSCreationClassName                       string
+	CSDVersion                                *string
+	CSName                                    string
+	CurrentTimeZone                           int16
+	DataExecutionPrevention_Available         bool
+	DataExecutionPrevention_32BitApplications bool
+	DataExecutionPrevention_Drivers           bool
+	DataExecutionPrevention_SupportPolicy     *uint8
+	Debug                                     bool
+	Description                               *string
+	Distributed                               bool
+	EncryptionLevel                           uint32
+	ForegroundApplicationBoost                *uint8
+	FreePhysicalMemory                        uint64
+	FreeSpaceInPagingFiles                    uint64
+	FreeVirtualMemory                         uint64
+	InstallDate                               time.Time
+	LargeSystemCache                          *uint32
+	LastBootUpTime                            time.Time
+	LocalDateTime                             time.Time
+	Locale                                    string
+	Manufacturer                              string
+	MaxNumberOfProcesses                      uint32
+	MaxProcessMemorySize                      uint64
+	MUILanguages                              *[]string
+	Name                                      string
+	NumberOfLicensedUsers                     *uint32
+	NumberOfProcesses                         uint32
+	NumberOfUsers                             uint32
+	OperatingSystemSKU                        uint32
+	Organization                              string
+	OSArchitecture                            string
+	OSLanguage                                uint32
+	OSProductSuite                            uint32
+	OSType                                    uint16
+	OtherTypeDescription                      *string
+	PAEEnabled                                *bool
+	PlusProductID                             *string
+	PlusVersionNumber                         *string
+	PortableOperatingSystem                   bool
+	Primary                                   bool
+	ProductType                               uint32
+	RegisteredUser                            string
+	SerialNumber                              string
+	ServicePackMajorVersion                   uint16
+	ServicePackMinorVersion                   uint16
+	SizeStoredInPagingFiles                   uint64
+	Status                                    string
+	SuiteMask                                 uint32
+	SystemDevice                              string
+	SystemDirectory                           string
+	SystemDrive                               string
+	TotalSwapSpaceSize                        *uint64
+	TotalVirtualMemorySize                    uint64
+	TotalVisibleMemorySize                    uint64
+	Version                                   string
+	WindowsDirectory                          string
+}

vendor/github.com/go-ole/go-ole/.travis.yml

@@ -0,0 +1,8 @@
+language: go
+sudo: false
+
+go:
+  - 1.9.x
+  - 1.10.x
+  - 1.11.x
+  - tip

vendor/github.com/go-ole/go-ole/ChangeLog.md

@@ -0,0 +1,49 @@
+# Version 1.x.x
+
+* **Add more test cases and reference new test COM server project.** (Placeholder for future additions)
+
+# Version 1.2.0-alphaX
+
+**Minimum supported version is now Go 1.4. Go 1.1 support is deprecated, but should still build.**
+
+ * Added CI configuration for Travis-CI and AppVeyor.
+ * Added test InterfaceID and ClassID for the COM Test Server project.
+ * Added more inline documentation (#83).
+ * Added IEnumVARIANT implementation (#88).
+ * Added IEnumVARIANT test cases (#99, #100, #101).
+ * Added support for retrieving `time.Time` from VARIANT (#92).
+ * Added test case for IUnknown (#64).
+ * Added test case for IDispatch (#64).
+ * Added test cases for scalar variants (#64, #76).
+
+# Version 1.1.1
+
+ * Fixes for Linux build.
+ * Fixes for Windows build.
+
+# Version 1.1.0
+
+The change to provide building on all platforms is a new feature. The increase in minor version reflects that and allows those who wish to stay on 1.0.x to continue to do so. Support for 1.0.x will be limited to bug fixes.
+
+ * Move GUID out of variables.go into its own file to make new documentation available.
+ * Move OleError out of ole.go into its own file to make new documentation available.
+ * Add documentation to utility functions.
+ * Add documentation to variant receiver functions.
+ * Add documentation to ole structures.
+ * Make variant available to other systems outside of Windows.
+ * Make OLE structures available to other systems outside of Windows.
+
+## New Features
+
+ * Library should now be built on all platforms supported by Go. Library will NOOP on any platform that is not Windows.
+ * More functions are now documented and available on godoc.org.
+
+# Version 1.0.1
+
+ 1. Fix package references from repository location change.
+
+# Version 1.0.0
+
+This version is stable enough for use. The COM API is still incomplete, but provides enough functionality for accessing COM servers using IDispatch interface.
+
+There is no changelog for this version. Check commits for history.

vendor/github.com/go-ole/go-ole/LICENSE

@@ -0,0 +1,21 @@
+The MIT License (MIT)
+
+Copyright © 2013-2017 Yasuhiro Matsumoto, <mattn.jp@gmail.com>
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of
+this software and associated documentation files (the “Software”), to deal in
+the Software without restriction, including without limitation the rights to
+use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
+of the Software, and to permit persons to whom the Software is furnished to do
+so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED “AS IS”, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

vendor/github.com/go-ole/go-ole/README.md

@@ -0,0 +1,46 @@
+# Go OLE
+
+[![Build status](https://ci.appveyor.com/api/projects/status/qr0u2sf7q43us9fj?svg=true)](https://ci.appveyor.com/project/jacobsantos/go-ole-jgs28)
+[![Build Status](https://travis-ci.org/go-ole/go-ole.svg?branch=master)](https://travis-ci.org/go-ole/go-ole)
+[![GoDoc](https://godoc.org/github.com/go-ole/go-ole?status.svg)](https://godoc.org/github.com/go-ole/go-ole)
+
+Go bindings for Windows COM using shared libraries instead of cgo.
+
+By Yasuhiro Matsumoto.
+
+## Install
+
+To experiment with go-ole, you can just compile and run the example program:
+
+```
+go get github.com/go-ole/go-ole
+cd /path/to/go-ole/
+go test
+
+cd /path/to/go-ole/example/excel
+go run excel.go
+```
+
+## Continuous Integration
+
+Continuous integration configuration has been added for both Travis-CI and AppVeyor. You will have to add these to your own account for your fork in order for it to run.
+
+**Travis-CI**
+
+Travis-CI was added to check builds on Linux to ensure that `go get` works when cross building. Currently, Travis-CI is not used to test cross-building, but this may be changed in the future. It is also not currently possible to test the library on Linux, since COM API is specific to Windows and it is not currently possible to run a COM server on Linux or even connect to a remote COM server.
+
+**AppVeyor**
+
+AppVeyor is used to build on Windows using the (in-development) test COM server. It is currently only used to test the build and ensure that the code works on Windows. It will be used to register a COM server and then run the test cases based on the test COM server.
+
+The tests currently do run and do pass and this should be maintained with commits.
+
+## Versioning
+
+Go OLE uses [semantic versioning](http://semver.org) for version numbers, which is similar to the version contract of the Go language. Which means that the major version will always maintain backwards compatibility with minor versions. Minor versions will only add new additions and changes. Fixes will always be in patch. 
+
+This contract should allow you to upgrade to new minor and patch versions without breakage or modifications to your existing code. Leave a ticket, if there is breakage, so that it could be fixed.
+
+## LICENSE
+
+Under the MIT License: http://mattn.mit-license.org/2013

vendor/github.com/go-ole/go-ole/_example/excel/excel.go

@@ -0,0 +1,31 @@
+// +build windows
+
+package main
+
+import (
+	"time"
+
+	ole "github.com/go-ole/go-ole"
+	"github.com/go-ole/go-ole/oleutil"
+)
+
+func main() {
+	ole.CoInitialize(0)
+	unknown, _ := oleutil.CreateObject("Excel.Application")
+	excel, _ := unknown.QueryInterface(ole.IID_IDispatch)
+	oleutil.PutProperty(excel, "Visible", true)
+	workbooks := oleutil.MustGetProperty(excel, "Workbooks").ToIDispatch()
+	workbook := oleutil.MustCallMethod(workbooks, "Add", nil).ToIDispatch()
+	worksheet := oleutil.MustGetProperty(workbook, "Worksheets", 1).ToIDispatch()
+	cell := oleutil.MustGetProperty(worksheet, "Cells", 1, 1).ToIDispatch()
+	oleutil.PutProperty(cell, "Value", 12345)
+
+	time.Sleep(2000000000)
+
+	oleutil.PutProperty(workbook, "Saved", true)
+	oleutil.CallMethod(workbook, "Close", false)
+	oleutil.CallMethod(excel, "Quit")
+	excel.Release()
+
+	ole.CoUninitialize()
+}

vendor/github.com/go-ole/go-ole/_example/excel2/excel.go

@@ -0,0 +1,96 @@
+// +build windows
+
+package main
+
+import (
+	"fmt"
+	"log"
+	"os"
+
+	ole "github.com/go-ole/go-ole"
+	"github.com/go-ole/go-ole/oleutil"
+)
+
+func writeExample(excel, workbooks *ole.IDispatch, filepath string) {
+	// ref: https://msdn.microsoft.com/zh-tw/library/office/ff198017.aspx
+	// http://stackoverflow.com/questions/12159513/what-is-the-correct-xlfileformat-enumeration-for-excel-97-2003
+	const xlExcel8 = 56
+	workbook := oleutil.MustCallMethod(workbooks, "Add", nil).ToIDispatch()
+	defer workbook.Release()
+	worksheet := oleutil.MustGetProperty(workbook, "Worksheets", 1).ToIDispatch()
+	defer worksheet.Release()
+	cell := oleutil.MustGetProperty(worksheet, "Cells", 1, 1).ToIDispatch()
+	oleutil.PutProperty(cell, "Value", 12345)
+	cell.Release()
+	activeWorkBook := oleutil.MustGetProperty(excel, "ActiveWorkBook").ToIDispatch()
+	defer activeWorkBook.Release()
+
+	os.Remove(filepath)
+	// ref: https://msdn.microsoft.com/zh-tw/library/microsoft.office.tools.excel.workbook.saveas.aspx
+	oleutil.MustCallMethod(activeWorkBook, "SaveAs", filepath, xlExcel8, nil, nil).ToIDispatch()
+
+	//time.Sleep(2 * time.Second)
+
+	// let excel could close without asking
+	// oleutil.PutProperty(workbook, "Saved", true)
+	// oleutil.CallMethod(workbook, "Close", false)
+}
+
+func readExample(fileName string, excel, workbooks *ole.IDispatch) {
+	workbook, err := oleutil.CallMethod(workbooks, "Open", fileName)
+
+	if err != nil {
+		log.Fatalln(err)
+	}
+	defer workbook.ToIDispatch().Release()
+
+	sheets := oleutil.MustGetProperty(excel, "Sheets").ToIDispatch()
+	sheetCount := (int)(oleutil.MustGetProperty(sheets, "Count").Val)
+	fmt.Println("sheet count=", sheetCount)
+	sheets.Release()
+
+	worksheet := oleutil.MustGetProperty(workbook.ToIDispatch(), "Worksheets", 1).ToIDispatch()
+	defer worksheet.Release()
+	for row := 1; row <= 2; row++ {
+		for col := 1; col <= 5; col++ {
+			cell := oleutil.MustGetProperty(worksheet, "Cells", row, col).ToIDispatch()
+			val, err := oleutil.GetProperty(cell, "Value")
+			if err != nil {
+				break
+			}
+			fmt.Printf("(%d,%d)=%+v toString=%s\n", col, row, val.Value(), val.ToString())
+			cell.Release()
+		}
+	}
+}
+
+func showMethodsAndProperties(i *ole.IDispatch) {
+	n, err := i.GetTypeInfoCount()
+	if err != nil {
+		log.Fatalln(err)
+	}
+	tinfo, err := i.GetTypeInfo()
+	if err != nil {
+		log.Fatalln(err)
+	}
+
+	fmt.Println("n=", n, "tinfo=", tinfo)
+}
+
+func main() {
+	log.SetFlags(log.Flags() | log.Lshortfile)
+	ole.CoInitialize(0)
+	unknown, _ := oleutil.CreateObject("Excel.Application")
+	excel, _ := unknown.QueryInterface(ole.IID_IDispatch)
+	oleutil.PutProperty(excel, "Visible", true)
+
+	workbooks := oleutil.MustGetProperty(excel, "Workbooks").ToIDispatch()
+	cwd, _ := os.Getwd()
+	writeExample(excel, workbooks, cwd+"\\write.xls")
+	readExample(cwd+"\\excel97-2003.xls", excel, workbooks)
+	showMethodsAndProperties(workbooks)
+	workbooks.Release()
+	// oleutil.CallMethod(excel, "Quit")
+	excel.Release()
+	ole.CoUninitialize()
+}

vendor/github.com/go-ole/go-ole/_example/ie/ie.go

@@ -0,0 +1,37 @@
+// +build windows
+
+package main
+
+import (
+	"time"
+
+	ole "github.com/go-ole/go-ole"
+	"github.com/go-ole/go-ole/oleutil"
+)
+
+func main() {
+	ole.CoInitialize(0)
+	unknown, _ := oleutil.CreateObject("InternetExplorer.Application")
+	ie, _ := unknown.QueryInterface(ole.IID_IDispatch)
+	oleutil.PutProperty(ie, "Visible", true)
+	oleutil.CallMethod(ie, "Navigate", "http://www.google.com")
+	for {
+		if oleutil.MustGetProperty(ie, "Busy").Val == 0 {
+			break
+		}
+	}
+
+	time.Sleep(1e9)
+
+	document := oleutil.MustGetProperty(ie, "document").ToIDispatch()
+
+	// set 'golang' to text box.
+	elems := oleutil.MustCallMethod(document, "getElementsByName", "q").ToIDispatch()
+	q := oleutil.MustCallMethod(elems, "item", 0).ToIDispatch()
+	oleutil.MustPutProperty(q, "value", "golang")
+
+	// click btnG.
+	elems = oleutil.MustCallMethod(document, "getElementsByName", "btnG").ToIDispatch()
+	btnG := oleutil.MustCallMethod(elems, "item", 0).ToIDispatch()
+	oleutil.MustCallMethod(btnG, "click")
+}

vendor/github.com/go-ole/go-ole/_example/itunes/itunes.go

@@ -0,0 +1,47 @@
+// +build windows
+
+package main
+
+import (
+	"log"
+	"os"
+	"strings"
+
+	ole "github.com/go-ole/go-ole"
+	"github.com/go-ole/go-ole/oleutil"
+	"github.com/gonuts/commander"
+)
+
+func iTunes() *ole.IDispatch {
+	ole.CoInitialize(0)
+	unknown, err := oleutil.CreateObject("iTunes.Application")
+	if err != nil {
+		log.Fatal(err)
+	}
+	itunes, err := unknown.QueryInterface(ole.IID_IDispatch)
+	if err != nil {
+		log.Fatal(err)
+	}
+	return itunes
+}
+
+func main() {
+	command := &commander.Command{
+		UsageLine: os.Args[0],
+		Short:     "itunes cmd",
+	}
+	command.Subcommands = []*commander.Command{}
+	for _, name := range []string{"Play", "Stop", "Pause", "Quit"} {
+		command.Subcommands = append(command.Subcommands, &commander.Command{
+			Run: func(cmd *commander.Command, args []string) error {
+				_, err := oleutil.CallMethod(iTunes(), name)
+				return err
+			},
+			UsageLine: strings.ToLower(name),
+		})
+	}
+	err := command.Dispatch(os.Args[1:])
+	if err != nil {
+		log.Fatal(err)
+	}
+}

vendor/github.com/go-ole/go-ole/_example/libreoffice/libreoffice.go

@@ -0,0 +1,162 @@
+// +build windows
+
+/*
+	Demonstrates basic LibreOffce (OpenOffice) automation with OLE using GO-OLE.
+	Usage: 	cd [...]\go-ole\example\libreoffice
+			go run libreoffice.go
+	References:
+			http://www.openoffice.org/api/basic/man/tutorial/tutorial.pdf
+			http://api.libreoffice.org/examples/examples.html#OLE_examples
+			https://wiki.openoffice.org/wiki/Documentation/BASIC_Guide
+
+	Tested environment:
+			go 1.6.2 (windows/amd64)
+			LibreOffice 5.1.0.3 (32 bit)
+			Windows 10 (64 bit)
+
+	The MIT License (MIT)
+	Copyright (c) 2016 Sebastian Schleemilch <https://github.com/itschleemilch>.
+
+	Permission is hereby granted, free of charge, to any person obtaining a copy of
+	this software and associated documentation files (the "Software"), to deal in
+	the Software without restriction, including without limitation the rights to use,
+	copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software,
+	and to permit persons to whom the Software is furnished to do so, subject to the
+	following conditions:
+
+	THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
+	INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
+	PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+	LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+	TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE
+	OR OTHER DEALINGS IN THE SOFTWARE.
+*/
+
+package main
+
+import (
+	"fmt"
+	"log"
+
+	ole "github.com/go-ole/go-ole"
+	"github.com/go-ole/go-ole/oleutil"
+)
+
+func checkError(err error, msg string) {
+	if err != nil {
+		log.Fatal(msg)
+	}
+}
+
+// LOGetCell returns an handle to a cell within a worksheet
+// LibreOffice Basic: GetCell = oSheet.getCellByPosition (nColumn , nRow)
+func LOGetCell(worksheet *ole.IDispatch, nColumn int, nRow int) (cell *ole.IDispatch) {
+	return oleutil.MustCallMethod(worksheet, "getCellByPosition", nColumn, nRow).ToIDispatch()
+}
+
+// LOGetCellRangeByName returns a named range (e.g. "A1:B4")
+func LOGetCellRangeByName(worksheet *ole.IDispatch, rangeName string) (cells *ole.IDispatch) {
+	return oleutil.MustCallMethod(worksheet, "getCellRangeByName", rangeName).ToIDispatch()
+}
+
+// LOGetCellString returns the displayed value
+func LOGetCellString(cell *ole.IDispatch) (value string) {
+	return oleutil.MustGetProperty(cell, "string").ToString()
+}
+
+// LOGetCellValue returns the cell's internal value (not formatted, dummy code, FIXME)
+func LOGetCellValue(cell *ole.IDispatch) (value string) {
+	val := oleutil.MustGetProperty(cell, "value")
+	fmt.Printf("Cell: %+v\n", val)
+	return val.ToString()
+}
+
+// LOGetCellError returns the error value of a cell (dummy code, FIXME)
+func LOGetCellError(cell *ole.IDispatch) (result *ole.VARIANT) {
+	return oleutil.MustGetProperty(cell, "error")
+}
+
+// LOSetCellString sets the text value of a cell
+func LOSetCellString(cell *ole.IDispatch, text string) {
+	oleutil.MustPutProperty(cell, "string", text)
+}
+
+// LOSetCellValue sets the numeric value of a cell
+func LOSetCellValue(cell *ole.IDispatch, value float64) {
+	oleutil.MustPutProperty(cell, "value", value)
+}
+
+// LOSetCellFormula sets the formula (in englisch language)
+func LOSetCellFormula(cell *ole.IDispatch, formula string) {
+	oleutil.MustPutProperty(cell, "formula", formula)
+}
+
+// LOSetCellFormulaLocal sets the formula in the user's language (e.g. German =SUMME instead of =SUM)
+func LOSetCellFormulaLocal(cell *ole.IDispatch, formula string) {
+	oleutil.MustPutProperty(cell, "FormulaLocal", formula)
+}
+
+// LONewSpreadsheet creates a new spreadsheet in a new window and returns a document handle.
+func LONewSpreadsheet(desktop *ole.IDispatch) (document *ole.IDispatch) {
+	var args = []string{}
+	document = oleutil.MustCallMethod(desktop,
+		"loadComponentFromURL", "private:factory/scalc", // alternative: private:factory/swriter
+		"_blank", 0, args).ToIDispatch()
+	return
+}
+
+// LOOpenFile opens a file (text, spreadsheet, ...) in a new window and returns a document
+// handle. Example: /home/testuser/spreadsheet.ods
+func LOOpenFile(desktop *ole.IDispatch, fullpath string) (document *ole.IDispatch) {
+	var args = []string{}
+	document = oleutil.MustCallMethod(desktop,
+		"loadComponentFromURL", "file://"+fullpath,
+		"_blank", 0, args).ToIDispatch()
+	return
+}
+
+// LOSaveFile saves the current document.
+// Only works if a file already exists,
+// see https://wiki.openoffice.org/wiki/Saving_a_document
+func LOSaveFile(document *ole.IDispatch) {
+	// use storeAsURL if neccessary with third URL parameter
+	oleutil.MustCallMethod(document, "store")
+}
+
+// LOGetWorksheet returns a worksheet (index starts at 0)
+func LOGetWorksheet(document *ole.IDispatch, index int) (worksheet *ole.IDispatch) {
+	sheets := oleutil.MustGetProperty(document, "Sheets").ToIDispatch()
+	worksheet = oleutil.MustCallMethod(sheets, "getByIndex", index).ToIDispatch()
+	return
+}
+
+// This example creates a new spreadsheet, reads and modifies cell values and style.
+func main() {
+	ole.CoInitialize(0)
+	unknown, errCreate := oleutil.CreateObject("com.sun.star.ServiceManager")
+	checkError(errCreate, "Couldn't create a OLE connection to LibreOffice")
+	ServiceManager, errSM := unknown.QueryInterface(ole.IID_IDispatch)
+	checkError(errSM, "Couldn't start a LibreOffice instance")
+	desktop := oleutil.MustCallMethod(ServiceManager,
+		"createInstance", "com.sun.star.frame.Desktop").ToIDispatch()
+
+	document := LONewSpreadsheet(desktop)
+	sheet0 := LOGetWorksheet(document, 0)
+
+	cell1_1 := LOGetCell(sheet0, 1, 1) // cell B2
+	cell1_2 := LOGetCell(sheet0, 1, 2) // cell B3
+	cell1_3 := LOGetCell(sheet0, 1, 3) // cell B4
+	cell1_4 := LOGetCell(sheet0, 1, 4) // cell B5
+	LOSetCellString(cell1_1, "Hello World")
+	LOSetCellValue(cell1_2, 33.45)
+	LOSetCellFormula(cell1_3, "=B3+5")
+	b4Value := LOGetCellString(cell1_3)
+	LOSetCellString(cell1_4, b4Value)
+	// set background color yellow:
+	oleutil.MustPutProperty(cell1_1, "cellbackcolor", 0xFFFF00)
+
+	fmt.Printf("Press [ENTER] to exit")
+	fmt.Scanf("%s")
+	ServiceManager.Release()
+	ole.CoUninitialize()
+}

vendor/github.com/go-ole/go-ole/_example/mediaplayer/mediaplayer.go

@@ -0,0 +1,29 @@
+// +build windows
+
+package main
+
+import (
+	"fmt"
+	"log"
+
+	ole "github.com/go-ole/go-ole"
+	"github.com/go-ole/go-ole/oleutil"
+)
+
+func main() {
+	ole.CoInitialize(0)
+	unknown, err := oleutil.CreateObject("WMPlayer.OCX")
+	if err != nil {
+		log.Fatal(err)
+	}
+	wmp := unknown.MustQueryInterface(ole.IID_IDispatch)
+	collection := oleutil.MustGetProperty(wmp, "MediaCollection").ToIDispatch()
+	list := oleutil.MustCallMethod(collection, "getAll").ToIDispatch()
+	count := int(oleutil.MustGetProperty(list, "count").Val)
+	for i := 0; i < count; i++ {
+		item := oleutil.MustGetProperty(list, "item", i).ToIDispatch()
+		name := oleutil.MustGetProperty(item, "name").ToString()
+		sourceURL := oleutil.MustGetProperty(item, "sourceURL").ToString()
+		fmt.Println(name, sourceURL)
+	}
+}

vendor/github.com/go-ole/go-ole/_example/msagent/msagent.go

@@ -0,0 +1,24 @@
+// +build windows
+
+package main
+
+import (
+	"time"
+
+	ole "github.com/go-ole/go-ole"
+	"github.com/go-ole/go-ole/oleutil"
+)
+
+func main() {
+	ole.CoInitialize(0)
+	unknown, _ := oleutil.CreateObject("Agent.Control.1")
+	agent, _ := unknown.QueryInterface(ole.IID_IDispatch)
+	oleutil.PutProperty(agent, "Connected", true)
+	characters := oleutil.MustGetProperty(agent, "Characters").ToIDispatch()
+	oleutil.CallMethod(characters, "Load", "Merlin", "c:\\windows\\msagent\\chars\\Merlin.acs")
+	character := oleutil.MustCallMethod(characters, "Character", "Merlin").ToIDispatch()
+	oleutil.CallMethod(character, "Show")
+	oleutil.CallMethod(character, "Speak", "こんにちわ世界")
+
+	time.Sleep(4000000000)
+}

vendor/github.com/go-ole/go-ole/_example/msxml/rssreader.go

@@ -0,0 +1,50 @@
+// +build windows
+
+package main
+
+import (
+	"fmt"
+	"time"
+
+	ole "github.com/go-ole/go-ole"
+	"github.com/go-ole/go-ole/oleutil"
+)
+
+func main() {
+	ole.CoInitialize(0)
+	unknown, _ := oleutil.CreateObject("Microsoft.XMLHTTP")
+	xmlhttp, _ := unknown.QueryInterface(ole.IID_IDispatch)
+	_, err := oleutil.CallMethod(xmlhttp, "open", "GET", "http://rss.slashdot.org/Slashdot/slashdot", false)
+	if err != nil {
+		panic(err.Error())
+	}
+	_, err = oleutil.CallMethod(xmlhttp, "send", nil)
+	if err != nil {
+		panic(err.Error())
+	}
+	state := -1
+	for state != 4 {
+		state = int(oleutil.MustGetProperty(xmlhttp, "readyState").Val)
+		time.Sleep(10000000)
+	}
+	responseXml := oleutil.MustGetProperty(xmlhttp, "responseXml").ToIDispatch()
+	items := oleutil.MustCallMethod(responseXml, "selectNodes", "/rdf:RDF/item").ToIDispatch()
+	length := int(oleutil.MustGetProperty(items, "length").Val)
+
+	println(length)
+	for n := 0; n < length; n++ {
+		item := oleutil.MustGetProperty(items, "item", n).ToIDispatch()
+
+		title := oleutil.MustCallMethod(item, "selectSingleNode", "title").ToIDispatch()
+		fmt.Println(oleutil.MustGetProperty(title, "text").ToString())
+
+		link := oleutil.MustCallMethod(item, "selectSingleNode", "link").ToIDispatch()
+		fmt.Println("  " + oleutil.MustGetProperty(link, "text").ToString())
+
+		title.Release()
+		link.Release()
+		item.Release()
+	}
+	items.Release()
+	xmlhttp.Release()
+}

vendor/github.com/go-ole/go-ole/_example/outlook/outlook.go

@@ -0,0 +1,29 @@
+// +build windows
+
+package main
+
+import (
+	"fmt"
+
+	ole "github.com/go-ole/go-ole"
+	"github.com/go-ole/go-ole/oleutil"
+)
+
+func main() {
+	ole.CoInitialize(0)
+	unknown, _ := oleutil.CreateObject("Outlook.Application")
+	outlook, _ := unknown.QueryInterface(ole.IID_IDispatch)
+	ns := oleutil.MustCallMethod(outlook, "GetNamespace", "MAPI").ToIDispatch()
+	folder := oleutil.MustCallMethod(ns, "GetDefaultFolder", 10).ToIDispatch()
+	contacts := oleutil.MustCallMethod(folder, "Items").ToIDispatch()
+	count := oleutil.MustGetProperty(contacts, "Count").Value().(int32)
+	for i := 1; i <= int(count); i++ {
+		item, err := oleutil.GetProperty(contacts, "Item", i)
+		if err == nil && item.VT == ole.VT_DISPATCH {
+			if value, err := oleutil.GetProperty(item.ToIDispatch(), "FullName"); err == nil {
+				fmt.Println(value.Value())
+			}
+		}
+	}
+	oleutil.MustCallMethod(outlook, "Quit")
+}

vendor/github.com/go-ole/go-ole/_example/winsock/winsock.go

@@ -0,0 +1,140 @@
+// +build windows
+
+package main
+
+import (
+	"log"
+	"syscall"
+	"unsafe"
+
+	ole "github.com/go-ole/go-ole"
+	"github.com/go-ole/go-ole/oleutil"
+)
+
+type EventReceiver struct {
+	lpVtbl *EventReceiverVtbl
+	ref    int32
+	host   *ole.IDispatch
+}
+
+type EventReceiverVtbl struct {
+	pQueryInterface   uintptr
+	pAddRef           uintptr
+	pRelease          uintptr
+	pGetTypeInfoCount uintptr
+	pGetTypeInfo      uintptr
+	pGetIDsOfNames    uintptr
+	pInvoke           uintptr
+}
+
+func QueryInterface(this *ole.IUnknown, iid *ole.GUID, punk **ole.IUnknown) uint32 {
+	s, _ := ole.StringFromCLSID(iid)
+	*punk = nil
+	if ole.IsEqualGUID(iid, ole.IID_IUnknown) ||
+		ole.IsEqualGUID(iid, ole.IID_IDispatch) {
+		AddRef(this)
+		*punk = this
+		return ole.S_OK
+	}
+	if s == "{248DD893-BB45-11CF-9ABC-0080C7E7B78D}" {
+		AddRef(this)
+		*punk = this
+		return ole.S_OK
+	}
+	return ole.E_NOINTERFACE
+}
+
+func AddRef(this *ole.IUnknown) int32 {
+	pthis := (*EventReceiver)(unsafe.Pointer(this))
+	pthis.ref++
+	return pthis.ref
+}
+
+func Release(this *ole.IUnknown) int32 {
+	pthis := (*EventReceiver)(unsafe.Pointer(this))
+	pthis.ref--
+	return pthis.ref
+}
+
+func GetIDsOfNames(this *ole.IUnknown, iid *ole.GUID, wnames []*uint16, namelen int, lcid int, pdisp []int32) uintptr {
+	for n := 0; n < namelen; n++ {
+		pdisp[n] = int32(n)
+	}
+	return uintptr(ole.S_OK)
+}
+
+func GetTypeInfoCount(pcount *int) uintptr {
+	if pcount != nil {
+		*pcount = 0
+	}
+	return uintptr(ole.S_OK)
+}
+
+func GetTypeInfo(ptypeif *uintptr) uintptr {
+	return uintptr(ole.E_NOTIMPL)
+}
+
+func Invoke(this *ole.IDispatch, dispid int, riid *ole.GUID, lcid int, flags int16, dispparams *ole.DISPPARAMS, result *ole.VARIANT, pexcepinfo *ole.EXCEPINFO, nerr *uint) uintptr {
+	switch dispid {
+	case 0:
+		log.Println("DataArrival")
+		winsock := (*EventReceiver)(unsafe.Pointer(this)).host
+		var data ole.VARIANT
+		ole.VariantInit(&data)
+		oleutil.CallMethod(winsock, "GetData", &data)
+		s := string(data.ToArray().ToByteArray())
+		println()
+		println(s)
+		println()
+	case 1:
+		log.Println("Connected")
+		winsock := (*EventReceiver)(unsafe.Pointer(this)).host
+		oleutil.CallMethod(winsock, "SendData", "GET / HTTP/1.0\r\n\r\n")
+	case 3:
+		log.Println("SendProgress")
+	case 4:
+		log.Println("SendComplete")
+	case 5:
+		log.Println("Close")
+		this.Release()
+	case 6:
+		log.Fatal("Error")
+	default:
+		log.Println(dispid)
+	}
+	return ole.E_NOTIMPL
+}
+
+func main() {
+	ole.CoInitialize(0)
+
+	unknown, err := oleutil.CreateObject("{248DD896-BB45-11CF-9ABC-0080C7E7B78D}")
+	if err != nil {
+		panic(err.Error())
+	}
+	winsock, _ := unknown.QueryInterface(ole.IID_IDispatch)
+	iid, _ := ole.CLSIDFromString("{248DD893-BB45-11CF-9ABC-0080C7E7B78D}")
+
+	dest := &EventReceiver{}
+	dest.lpVtbl = &EventReceiverVtbl{}
+	dest.lpVtbl.pQueryInterface = syscall.NewCallback(QueryInterface)
+	dest.lpVtbl.pAddRef = syscall.NewCallback(AddRef)
+	dest.lpVtbl.pRelease = syscall.NewCallback(Release)
+	dest.lpVtbl.pGetTypeInfoCount = syscall.NewCallback(GetTypeInfoCount)
+	dest.lpVtbl.pGetTypeInfo = syscall.NewCallback(GetTypeInfo)
+	dest.lpVtbl.pGetIDsOfNames = syscall.NewCallback(GetIDsOfNames)
+	dest.lpVtbl.pInvoke = syscall.NewCallback(Invoke)
+	dest.host = winsock
+
+	oleutil.ConnectObject(winsock, iid, (*ole.IUnknown)(unsafe.Pointer(dest)))
+	_, err = oleutil.CallMethod(winsock, "Connect", "127.0.0.1", 80)
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	var m ole.Msg
+	for dest.ref != 0 {
+		ole.GetMessage(&m, 0, 0, 0)
+		ole.DispatchMessage(&m)
+	}
+}

vendor/github.com/go-ole/go-ole/appveyor.yml

@@ -0,0 +1,54 @@
+# Notes:
+#   - Minimal appveyor.yml file is an empty file. All sections are optional.
+#   - Indent each level of configuration with 2 spaces. Do not use tabs!
+#   - All section names are case-sensitive.
+#   - Section names should be unique on each level.
+
+version: "1.3.0.{build}-alpha-{branch}"
+
+os: Windows Server 2012 R2
+
+branches:
+  only:
+    - master
+    - v1.2
+    - v1.1
+    - v1.0
+
+skip_tags: true
+
+clone_folder: c:\gopath\src\github.com\go-ole\go-ole
+
+environment:
+  GOPATH: c:\gopath
+  matrix:
+  - GOARCH: amd64
+    GOVERSION: 1.5
+    GOROOT: c:\go
+    DOWNLOADPLATFORM: "x64"
+
+install:
+  - choco install mingw
+  - SET PATH=c:\tools\mingw64\bin;%PATH%
+  # - Download COM Server
+  - ps: Start-FileDownload "https://github.com/go-ole/test-com-server/releases/download/v1.0.2/test-com-server-${env:DOWNLOADPLATFORM}.zip"
+  - 7z e test-com-server-%DOWNLOADPLATFORM%.zip -oc:\gopath\src\github.com\go-ole\go-ole > NUL
+  - c:\gopath\src\github.com\go-ole\go-ole\build\register-assembly.bat
+  # - set
+  - go version
+  - go env
+  - go get -u golang.org/x/tools/cmd/cover
+  - go get -u golang.org/x/tools/cmd/godoc
+  - go get -u golang.org/x/tools/cmd/stringer
+
+build_script:
+  - cd c:\gopath\src\github.com\go-ole\go-ole
+  - go get -v -t ./...
+  - go build
+  - go test -v -cover ./...
+
+# disable automatic tests
+test: off
+
+# disable deployment
+deploy: off

vendor/github.com/go-ole/go-ole/build/register-assembly.bat

@@ -0,0 +1,8 @@
+@ECHO OFF
+
+IF "x86" == "%DOWNLOADPLATFORM%" (
+	CALL c:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe /codebase /nologo c:\gopath\src\github.com\go-ole\go-ole\TestCOMServer.dll
+)
+IF "x64" == "%DOWNLOADPLATFORM%" (
+	CALL c:\Windows\Microsoft.NET\Framework64\v4.0.30319\RegAsm.exe /codebase /nologo c:\gopath\src\github.com\go-ole\go-ole\TestCOMServer.dll
+)

vendor/github.com/go-ole/go-ole/com.go

@@ -0,0 +1,344 @@
+// +build windows
+
+package ole
+
+import (
+	"syscall"
+	"unicode/utf16"
+	"unsafe"
+)
+
+var (
+	procCoInitialize, _            = modole32.FindProc("CoInitialize")
+	procCoInitializeEx, _          = modole32.FindProc("CoInitializeEx")
+	procCoUninitialize, _          = modole32.FindProc("CoUninitialize")
+	procCoCreateInstance, _        = modole32.FindProc("CoCreateInstance")
+	procCoTaskMemFree, _           = modole32.FindProc("CoTaskMemFree")
+	procCLSIDFromProgID, _         = modole32.FindProc("CLSIDFromProgID")
+	procCLSIDFromString, _         = modole32.FindProc("CLSIDFromString")
+	procStringFromCLSID, _         = modole32.FindProc("StringFromCLSID")
+	procStringFromIID, _           = modole32.FindProc("StringFromIID")
+	procIIDFromString, _           = modole32.FindProc("IIDFromString")
+	procCoGetObject, _             = modole32.FindProc("CoGetObject")
+	procGetUserDefaultLCID, _      = modkernel32.FindProc("GetUserDefaultLCID")
+	procCopyMemory, _              = modkernel32.FindProc("RtlMoveMemory")
+	procVariantInit, _             = modoleaut32.FindProc("VariantInit")
+	procVariantClear, _            = modoleaut32.FindProc("VariantClear")
+	procVariantTimeToSystemTime, _ = modoleaut32.FindProc("VariantTimeToSystemTime")
+	procSysAllocString, _          = modoleaut32.FindProc("SysAllocString")
+	procSysAllocStringLen, _       = modoleaut32.FindProc("SysAllocStringLen")
+	procSysFreeString, _           = modoleaut32.FindProc("SysFreeString")
+	procSysStringLen, _            = modoleaut32.FindProc("SysStringLen")
+	procCreateDispTypeInfo, _      = modoleaut32.FindProc("CreateDispTypeInfo")
+	procCreateStdDispatch, _       = modoleaut32.FindProc("CreateStdDispatch")
+	procGetActiveObject, _         = modoleaut32.FindProc("GetActiveObject")
+
+	procGetMessageW, _      = moduser32.FindProc("GetMessageW")
+	procDispatchMessageW, _ = moduser32.FindProc("DispatchMessageW")
+)
+
+// coInitialize initializes COM library on current thread.
+//
+// MSDN documentation suggests that this function should not be called. Call
+// CoInitializeEx() instead. The reason has to do with threading and this
+// function is only for single-threaded apartments.
+//
+// That said, most users of the library have gotten away with just this
+// function. If you are experiencing threading issues, then use
+// CoInitializeEx().
+func coInitialize() (err error) {
+	// http://msdn.microsoft.com/en-us/library/windows/desktop/ms678543(v=vs.85).aspx
+	// Suggests that no value should be passed to CoInitialized.
+	// Could just be Call() since the parameter is optional. <-- Needs testing to be sure.
+	hr, _, _ := procCoInitialize.Call(uintptr(0))
+	if hr != 0 {
+		err = NewError(hr)
+	}
+	return
+}
+
+// coInitializeEx initializes COM library with concurrency model.
+func coInitializeEx(coinit uint32) (err error) {
+	// http://msdn.microsoft.com/en-us/library/windows/desktop/ms695279(v=vs.85).aspx
+	// Suggests that the first parameter is not only optional but should always be NULL.
+	hr, _, _ := procCoInitializeEx.Call(uintptr(0), uintptr(coinit))
+	if hr != 0 {
+		err = NewError(hr)
+	}
+	return
+}
+
+// CoInitialize initializes COM library on current thread.
+//
+// MSDN documentation suggests that this function should not be called. Call
+// CoInitializeEx() instead. The reason has to do with threading and this
+// function is only for single-threaded apartments.
+//
+// That said, most users of the library have gotten away with just this
+// function. If you are experiencing threading issues, then use
+// CoInitializeEx().
+func CoInitialize(p uintptr) (err error) {
+	// p is ignored and won't be used.
+	// Avoid any variable not used errors.
+	p = uintptr(0)
+	return coInitialize()
+}
+
+// CoInitializeEx initializes COM library with concurrency model.
+func CoInitializeEx(p uintptr, coinit uint32) (err error) {
+	// Avoid any variable not used errors.
+	p = uintptr(0)
+	return coInitializeEx(coinit)
+}
+
+// CoUninitialize uninitializes COM Library.
+func CoUninitialize() {
+	procCoUninitialize.Call()
+}
+
+// CoTaskMemFree frees memory pointer.
+func CoTaskMemFree(memptr uintptr) {
+	procCoTaskMemFree.Call(memptr)
+}
+
+// CLSIDFromProgID retrieves Class Identifier with the given Program Identifier.
+//
+// The Programmatic Identifier must be registered, because it will be looked up
+// in the Windows Registry. The registry entry has the following keys: CLSID,
+// Insertable, Protocol and Shell
+// (https://msdn.microsoft.com/en-us/library/dd542719(v=vs.85).aspx).
+//
+// programID identifies the class id with less precision and is not guaranteed
+// to be unique. These are usually found in the registry under
+// HKEY_LOCAL_MACHINE\SOFTWARE\Classes, usually with the format of
+// "Program.Component.Version" with version being optional.
+//
+// CLSIDFromProgID in Windows API.
+func CLSIDFromProgID(progId string) (clsid *GUID, err error) {
+	var guid GUID
+	lpszProgID := uintptr(unsafe.Pointer(syscall.StringToUTF16Ptr(progId)))
+	hr, _, _ := procCLSIDFromProgID.Call(lpszProgID, uintptr(unsafe.Pointer(&guid)))
+	if hr != 0 {
+		err = NewError(hr)
+	}
+	clsid = &guid
+	return
+}
+
+// CLSIDFromString retrieves Class ID from string representation.
+//
+// This is technically the string version of the GUID and will convert the
+// string to object.
+//
+// CLSIDFromString in Windows API.
+func CLSIDFromString(str string) (clsid *GUID, err error) {
+	var guid GUID
+	lpsz := uintptr(unsafe.Pointer(syscall.StringToUTF16Ptr(str)))
+	hr, _, _ := procCLSIDFromString.Call(lpsz, uintptr(unsafe.Pointer(&guid)))
+	if hr != 0 {
+		err = NewError(hr)
+	}
+	clsid = &guid
+	return
+}
+
+// StringFromCLSID returns GUID formated string from GUID object.
+func StringFromCLSID(clsid *GUID) (str string, err error) {
+	var p *uint16
+	hr, _, _ := procStringFromCLSID.Call(uintptr(unsafe.Pointer(clsid)), uintptr(unsafe.Pointer(&p)))
+	if hr != 0 {
+		err = NewError(hr)
+	}
+	str = LpOleStrToString(p)
+	return
+}
+
+// IIDFromString returns GUID from program ID.
+func IIDFromString(progId string) (clsid *GUID, err error) {
+	var guid GUID
+	lpsz := uintptr(unsafe.Pointer(syscall.StringToUTF16Ptr(progId)))
+	hr, _, _ := procIIDFromString.Call(lpsz, uintptr(unsafe.Pointer(&guid)))
+	if hr != 0 {
+		err = NewError(hr)
+	}
+	clsid = &guid
+	return
+}
+
+// StringFromIID returns GUID formatted string from GUID object.
+func StringFromIID(iid *GUID) (str string, err error) {
+	var p *uint16
+	hr, _, _ := procStringFromIID.Call(uintptr(unsafe.Pointer(iid)), uintptr(unsafe.Pointer(&p)))
+	if hr != 0 {
+		err = NewError(hr)
+	}
+	str = LpOleStrToString(p)
+	return
+}
+
+// CreateInstance of single uninitialized object with GUID.
+func CreateInstance(clsid *GUID, iid *GUID) (unk *IUnknown, err error) {
+	if iid == nil {
+		iid = IID_IUnknown
+	}
+	hr, _, _ := procCoCreateInstance.Call(
+		uintptr(unsafe.Pointer(clsid)),
+		0,
+		CLSCTX_SERVER,
+		uintptr(unsafe.Pointer(iid)),
+		uintptr(unsafe.Pointer(&unk)))
+	if hr != 0 {
+		err = NewError(hr)
+	}
+	return
+}
+
+// GetActiveObject retrieves pointer to active object.
+func GetActiveObject(clsid *GUID, iid *GUID) (unk *IUnknown, err error) {
+	if iid == nil {
+		iid = IID_IUnknown
+	}
+	hr, _, _ := procGetActiveObject.Call(
+		uintptr(unsafe.Pointer(clsid)),
+		uintptr(unsafe.Pointer(iid)),
+		uintptr(unsafe.Pointer(&unk)))
+	if hr != 0 {
+		err = NewError(hr)
+	}
+	return
+}
+
+type BindOpts struct {
+	CbStruct          uint32
+	GrfFlags          uint32
+	GrfMode           uint32
+	TickCountDeadline uint32
+}
+
+// GetObject retrieves pointer to active object.
+func GetObject(programID string, bindOpts *BindOpts, iid *GUID) (unk *IUnknown, err error) {
+	if bindOpts != nil {
+		bindOpts.CbStruct = uint32(unsafe.Sizeof(BindOpts{}))
+	}
+	if iid == nil {
+		iid = IID_IUnknown
+	}
+	hr, _, _ := procCoGetObject.Call(
+		uintptr(unsafe.Pointer(syscall.StringToUTF16Ptr(programID))),
+		uintptr(unsafe.Pointer(bindOpts)),
+		uintptr(unsafe.Pointer(iid)),
+		uintptr(unsafe.Pointer(&unk)))
+	if hr != 0 {
+		err = NewError(hr)
+	}
+	return
+}
+
+// VariantInit initializes variant.
+func VariantInit(v *VARIANT) (err error) {
+	hr, _, _ := procVariantInit.Call(uintptr(unsafe.Pointer(v)))
+	if hr != 0 {
+		err = NewError(hr)
+	}
+	return
+}
+
+// VariantClear clears value in Variant settings to VT_EMPTY.
+func VariantClear(v *VARIANT) (err error) {
+	hr, _, _ := procVariantClear.Call(uintptr(unsafe.Pointer(v)))
+	if hr != 0 {
+		err = NewError(hr)
+	}
+	return
+}
+
+// SysAllocString allocates memory for string and copies string into memory.
+func SysAllocString(v string) (ss *int16) {
+	pss, _, _ := procSysAllocString.Call(uintptr(unsafe.Pointer(syscall.StringToUTF16Ptr(v))))
+	ss = (*int16)(unsafe.Pointer(pss))
+	return
+}
+
+// SysAllocStringLen copies up to length of given string returning pointer.
+func SysAllocStringLen(v string) (ss *int16) {
+	utf16 := utf16.Encode([]rune(v + "\x00"))
+	ptr := &utf16[0]
+
+	pss, _, _ := procSysAllocStringLen.Call(uintptr(unsafe.Pointer(ptr)), uintptr(len(utf16)-1))
+	ss = (*int16)(unsafe.Pointer(pss))
+	return
+}
+
+// SysFreeString frees string system memory. This must be called with SysAllocString.
+func SysFreeString(v *int16) (err error) {
+	hr, _, _ := procSysFreeString.Call(uintptr(unsafe.Pointer(v)))
+	if hr != 0 {
+		err = NewError(hr)
+	}
+	return
+}
+
+// SysStringLen is the length of the system allocated string.
+func SysStringLen(v *int16) uint32 {
+	l, _, _ := procSysStringLen.Call(uintptr(unsafe.Pointer(v)))
+	return uint32(l)
+}
+
+// CreateStdDispatch provides default IDispatch implementation for IUnknown.
+//
+// This handles default IDispatch implementation for objects. It haves a few
+// limitations with only supporting one language. It will also only return
+// default exception codes.
+func CreateStdDispatch(unk *IUnknown, v uintptr, ptinfo *IUnknown) (disp *IDispatch, err error) {
+	hr, _, _ := procCreateStdDispatch.Call(
+		uintptr(unsafe.Pointer(unk)),
+		v,
+		uintptr(unsafe.Pointer(ptinfo)),
+		uintptr(unsafe.Pointer(&disp)))
+	if hr != 0 {
+		err = NewError(hr)
+	}
+	return
+}
+
+// CreateDispTypeInfo provides default ITypeInfo implementation for IDispatch.
+//
+// This will not handle the full implementation of the interface.
+func CreateDispTypeInfo(idata *INTERFACEDATA) (pptinfo *IUnknown, err error) {
+	hr, _, _ := procCreateDispTypeInfo.Call(
+		uintptr(unsafe.Pointer(idata)),
+		uintptr(GetUserDefaultLCID()),
+		uintptr(unsafe.Pointer(&pptinfo)))
+	if hr != 0 {
+		err = NewError(hr)
+	}
+	return
+}
+
+// copyMemory moves location of a block of memory.
+func copyMemory(dest unsafe.Pointer, src unsafe.Pointer, length uint32) {
+	procCopyMemory.Call(uintptr(dest), uintptr(src), uintptr(length))
+}
+
+// GetUserDefaultLCID retrieves current user default locale.
+func GetUserDefaultLCID() (lcid uint32) {
+	ret, _, _ := procGetUserDefaultLCID.Call()
+	lcid = uint32(ret)
+	return
+}
+
+// GetMessage in message queue from runtime.
+//
+// This function appears to block. PeekMessage does not block.
+func GetMessage(msg *Msg, hwnd uint32, MsgFilterMin uint32, MsgFilterMax uint32) (ret int32, err error) {
+	r0, _, err := procGetMessageW.Call(uintptr(unsafe.Pointer(msg)), uintptr(hwnd), uintptr(MsgFilterMin), uintptr(MsgFilterMax))
+	ret = int32(r0)
+	return
+}
+
+// DispatchMessage to window procedure.
+func DispatchMessage(msg *Msg) (ret int32) {
+	r0, _, _ := procDispatchMessageW.Call(uintptr(unsafe.Pointer(msg)))
+	ret = int32(r0)
+	return
+}

vendor/github.com/go-ole/go-ole/com_func.go

@@ -0,0 +1,174 @@
+// +build !windows
+
+package ole
+
+import (
+	"time"
+	"unsafe"
+)
+
+// coInitialize initializes COM library on current thread.
+//
+// MSDN documentation suggests that this function should not be called. Call
+// CoInitializeEx() instead. The reason has to do with threading and this
+// function is only for single-threaded apartments.
+//
+// That said, most users of the library have gotten away with just this
+// function. If you are experiencing threading issues, then use
+// CoInitializeEx().
+func coInitialize() error {
+	return NewError(E_NOTIMPL)
+}
+
+// coInitializeEx initializes COM library with concurrency model.
+func coInitializeEx(coinit uint32) error {
+	return NewError(E_NOTIMPL)
+}
+
+// CoInitialize initializes COM library on current thread.
+//
+// MSDN documentation suggests that this function should not be called. Call
+// CoInitializeEx() instead. The reason has to do with threading and this
+// function is only for single-threaded apartments.
+//
+// That said, most users of the library have gotten away with just this
+// function. If you are experiencing threading issues, then use
+// CoInitializeEx().
+func CoInitialize(p uintptr) error {
+	return NewError(E_NOTIMPL)
+}
+
+// CoInitializeEx initializes COM library with concurrency model.
+func CoInitializeEx(p uintptr, coinit uint32) error {
+	return NewError(E_NOTIMPL)
+}
+
+// CoUninitialize uninitializes COM Library.
+func CoUninitialize() {}
+
+// CoTaskMemFree frees memory pointer.
+func CoTaskMemFree(memptr uintptr) {}
+
+// CLSIDFromProgID retrieves Class Identifier with the given Program Identifier.
+//
+// The Programmatic Identifier must be registered, because it will be looked up
+// in the Windows Registry. The registry entry has the following keys: CLSID,
+// Insertable, Protocol and Shell
+// (https://msdn.microsoft.com/en-us/library/dd542719(v=vs.85).aspx).
+//
+// programID identifies the class id with less precision and is not guaranteed
+// to be unique. These are usually found in the registry under
+// HKEY_LOCAL_MACHINE\SOFTWARE\Classes, usually with the format of
+// "Program.Component.Version" with version being optional.
+//
+// CLSIDFromProgID in Windows API.
+func CLSIDFromProgID(progId string) (*GUID, error) {
+	return nil, NewError(E_NOTIMPL)
+}
+
+// CLSIDFromString retrieves Class ID from string representation.
+//
+// This is technically the string version of the GUID and will convert the
+// string to object.
+//
+// CLSIDFromString in Windows API.
+func CLSIDFromString(str string) (*GUID, error) {
+	return nil, NewError(E_NOTIMPL)
+}
+
+// StringFromCLSID returns GUID formated string from GUID object.
+func StringFromCLSID(clsid *GUID) (string, error) {
+	return "", NewError(E_NOTIMPL)
+}
+
+// IIDFromString returns GUID from program ID.
+func IIDFromString(progId string) (*GUID, error) {
+	return nil, NewError(E_NOTIMPL)
+}
+
+// StringFromIID returns GUID formatted string from GUID object.
+func StringFromIID(iid *GUID) (string, error) {
+	return "", NewError(E_NOTIMPL)
+}
+
+// CreateInstance of single uninitialized object with GUID.
+func CreateInstance(clsid *GUID, iid *GUID) (*IUnknown, error) {
+	return nil, NewError(E_NOTIMPL)
+}
+
+// GetActiveObject retrieves pointer to active object.
+func GetActiveObject(clsid *GUID, iid *GUID) (*IUnknown, error) {
+	return nil, NewError(E_NOTIMPL)
+}
+
+// VariantInit initializes variant.
+func VariantInit(v *VARIANT) error {
+	return NewError(E_NOTIMPL)
+}
+
+// VariantClear clears value in Variant settings to VT_EMPTY.
+func VariantClear(v *VARIANT) error {
+	return NewError(E_NOTIMPL)
+}
+
+// SysAllocString allocates memory for string and copies string into memory.
+func SysAllocString(v string) *int16 {
+	u := int16(0)
+	return &u
+}
+
+// SysAllocStringLen copies up to length of given string returning pointer.
+func SysAllocStringLen(v string) *int16 {
+	u := int16(0)
+	return &u
+}
+
+// SysFreeString frees string system memory. This must be called with SysAllocString.
+func SysFreeString(v *int16) error {
+	return NewError(E_NOTIMPL)
+}
+
+// SysStringLen is the length of the system allocated string.
+func SysStringLen(v *int16) uint32 {
+	return uint32(0)
+}
+
+// CreateStdDispatch provides default IDispatch implementation for IUnknown.
+//
+// This handles default IDispatch implementation for objects. It haves a few
+// limitations with only supporting one language. It will also only return
+// default exception codes.
+func CreateStdDispatch(unk *IUnknown, v uintptr, ptinfo *IUnknown) (*IDispatch, error) {
+	return nil, NewError(E_NOTIMPL)
+}
+
+// CreateDispTypeInfo provides default ITypeInfo implementation for IDispatch.
+//
+// This will not handle the full implementation of the interface.
+func CreateDispTypeInfo(idata *INTERFACEDATA) (*IUnknown, error) {
+	return nil, NewError(E_NOTIMPL)
+}
+
+// copyMemory moves location of a block of memory.
+func copyMemory(dest unsafe.Pointer, src unsafe.Pointer, length uint32) {}
+
+// GetUserDefaultLCID retrieves current user default locale.
+func GetUserDefaultLCID() uint32 {
+	return uint32(0)
+}
+
+// GetMessage in message queue from runtime.
+//
+// This function appears to block. PeekMessage does not block.
+func GetMessage(msg *Msg, hwnd uint32, MsgFilterMin uint32, MsgFilterMax uint32) (int32, error) {
+	return int32(0), NewError(E_NOTIMPL)
+}
+
+// DispatchMessage to window procedure.
+func DispatchMessage(msg *Msg) int32 {
+	return int32(0)
+}
+
+func GetVariantDate(value uint64) (time.Time, error) {
+	return time.Now(), NewError(E_NOTIMPL)
+}

vendor/github.com/go-ole/go-ole/com_func_test.go

@@ -0,0 +1,193 @@
+// +build !windows
+
+package ole
+
+import "testing"
+
+// TestComSetupAndShutDown tests that API fails on Linux.
+func TestComSetupAndShutDown(t *testing.T) {
+	defer func() {
+		if r := recover(); r != nil {
+			t.Log(r)
+			t.Fail()
+		}
+	}()
+
+	err := coInitialize()
+	if err == nil {
+		t.Error("should be error, because only Windows is supported.")
+		t.FailNow()
+	}
+
+	CoUninitialize()
+}
+
+// TestComPublicSetupAndShutDown tests that API fails on Linux.
+func TestComPublicSetupAndShutDown(t *testing.T) {
+	defer func() {
+		if r := recover(); r != nil {
+			t.Log(r)
+			t.Fail()
+		}
+	}()
+
+	err := CoInitialize(0)
+	if err == nil {
+		t.Error("should be error, because only Windows is supported.")
+		t.FailNow()
+	}
+
+	CoUninitialize()
+}
+
+// TestComPublicSetupAndShutDown_WithValue tests that API fails on Linux.
+func TestComPublicSetupAndShutDown_WithValue(t *testing.T) {
+	defer func() {
+		if r := recover(); r != nil {
+			t.Log(r)
+			t.Fail()
+		}
+	}()
+
+	err := CoInitialize(5)
+	if err == nil {
+		t.Error("should be error, because only Windows is supported.")
+		t.FailNow()
+	}
+
+	CoUninitialize()
+}
+
+// TestComExSetupAndShutDown tests that API fails on Linux.
+func TestComExSetupAndShutDown(t *testing.T) {
+	defer func() {
+		if r := recover(); r != nil {
+			t.Log(r)
+			t.Fail()
+		}
+	}()
+
+	err := coInitializeEx(COINIT_MULTITHREADED)
+	if err == nil {
+		t.Error("should be error, because only Windows is supported.")
+		t.FailNow()
+	}
+
+	CoUninitialize()
+}
+
+// TestComPublicExSetupAndShutDown tests that API fails on Linux.
+func TestComPublicExSetupAndShutDown(t *testing.T) {
+	defer func() {
+		if r := recover(); r != nil {
+			t.Log(r)
+			t.Fail()
+		}
+	}()
+
+	err := CoInitializeEx(0, COINIT_MULTITHREADED)
+	if err == nil {
+		t.Error("should be error, because only Windows is supported.")
+		t.FailNow()
+	}
+
+	CoUninitialize()
+}
+
+// TestComPublicExSetupAndShutDown_WithValue tests that API fails on Linux.
+func TestComPublicExSetupAndShutDown_WithValue(t *testing.T) {
+	defer func() {
+		if r := recover(); r != nil {
+			t.Log(r)
+			t.Fail()
+		}
+	}()
+
+	err := CoInitializeEx(5, COINIT_MULTITHREADED)
+	if err == nil {
+		t.Error("should be error, because only Windows is supported.")
+		t.FailNow()
+	}
+
+	CoUninitialize()
+}
+
+// TestClsidFromProgID_WindowsMediaNSSManager tests that API fails on Linux.
+func TestClsidFromProgID_WindowsMediaNSSManager(t *testing.T) {
+	defer func() {
+		if r := recover(); r != nil {
+			t.Log(r)
+			t.Fail()
+		}
+	}()
+
+	coInitialize()
+	defer CoUninitialize()
+	_, err := CLSIDFromProgID("WMPNSSCI.NSSManager")
+	if err == nil {
+		t.Error("should be error, because only Windows is supported.")
+		t.FailNow()
+	}
+}
+
+// TestClsidFromString_WindowsMediaNSSManager tests that API fails on Linux.
+func TestClsidFromString_WindowsMediaNSSManager(t *testing.T) {
+	defer func() {
+		if r := recover(); r != nil {
+			t.Log(r)
+			t.Fail()
+		}
+	}()
+
+	coInitialize()
+	defer CoUninitialize()
+	_, err := CLSIDFromString("{92498132-4D1A-4297-9B78-9E2E4BA99C07}")
+
+	if err == nil {
+		t.Error("should be error, because only Windows is supported.")
+		t.FailNow()
+	}
+}
+
+// TestCreateInstance_WindowsMediaNSSManager tests that API fails on Linux.
+func TestCreateInstance_WindowsMediaNSSManager(t *testing.T) {
+	defer func() {
+		if r := recover(); r != nil {
+			t.Log(r)
+			t.Fail()
+		}
+	}()
+
+	coInitialize()
+	defer CoUninitialize()
+	_, err := CLSIDFromProgID("WMPNSSCI.NSSManager")
+
+	if err == nil {
+		t.Error("should be error, because only Windows is supported.")
+		t.FailNow()
+	}
+}
+
+// TestError tests that API fails on Linux.
+func TestError(t *testing.T) {
+	defer func() {
+		if r := recover(); r != nil {
+			t.Log(r)
+			t.Fail()
+		}
+	}()
+
+	coInitialize()
+	defer CoUninitialize()
+	_, err := CLSIDFromProgID("INTERFACE-NOT-FOUND")
+	if err == nil {
+		t.Error("should be error, because only Windows is supported.")
+		t.FailNow()
+	}
+
+	switch vt := err.(type) {
+	case *OleError:
+	default:
+		t.Fatalf("should be *ole.OleError %t", vt)
+	}
+}

vendor/github.com/go-ole/go-ole/com_test.go

@@ -0,0 +1,205 @@
+// +build windows
+
+package ole
+
+import (
+	"fmt"
+	"testing"
+)
+
+func TestComSetupAndShutDown(t *testing.T) {
+	defer func() {
+		if r := recover(); r != nil {
+			t.Log(r)
+			t.Fail()
+		}
+	}()
+
+	err := coInitialize()
+	if err != nil {
+		t.Error(err)
+		t.FailNow()
+	}
+
+	CoUninitialize()
+}
+
+func TestComPublicSetupAndShutDown(t *testing.T) {
+	defer func() {
+		if r := recover(); r != nil {
+			t.Log(r)
+			t.Fail()
+		}
+	}()
+
+	err := CoInitialize(0)
+	if err != nil {
+		t.Error(err)
+		t.FailNow()
+	}
+
+	CoUninitialize()
+}
+
+func TestComPublicSetupAndShutDown_WithValue(t *testing.T) {
+	defer func() {
+		if r := recover(); r != nil {
+			t.Log(r)
+			t.Fail()
+		}
+	}()
+
+	err := CoInitialize(5)
+	if err != nil {
+		t.Error(err)
+		t.FailNow()
+	}
+
+	CoUninitialize()
+}
+
+func TestComExSetupAndShutDown(t *testing.T) {
+	defer func() {
+		if r := recover(); r != nil {
+			t.Log(r)
+			t.Fail()
+		}
+	}()
+
+	err := coInitializeEx(COINIT_MULTITHREADED)
+	if err != nil {
+		t.Error(err)
+		t.FailNow()
+	}
+
+	CoUninitialize()
+}
+
+func TestComPublicExSetupAndShutDown(t *testing.T) {
+	defer func() {
+		if r := recover(); r != nil {
+			t.Log(r)
+			t.Fail()
+		}
+	}()
+
+	err := CoInitializeEx(0, COINIT_MULTITHREADED)
+	if err != nil {
+		t.Error(err)
+		t.FailNow()
+	}
+
+	CoUninitialize()
+}
+
+func TestComPublicExSetupAndShutDown_WithValue(t *testing.T) {
+	defer func() {
+		if r := recover(); r != nil {
+			t.Log(r)
+			t.Fail()
+		}
+	}()
+
+	err := CoInitializeEx(5, COINIT_MULTITHREADED)
+	if err != nil {
+		t.Error(err)
+		t.FailNow()
+	}
+
+	CoUninitialize()
+}
+
+func TestClsidFromProgID_WindowsMediaNSSManager(t *testing.T) {
+	defer func() {
+		if r := recover(); r != nil {
+			t.Log(r)
+			t.Fail()
+		}
+	}()
+
+	expected := &GUID{0x92498132, 0x4D1A, 0x4297, [8]byte{0x9B, 0x78, 0x9E, 0x2E, 0x4B, 0xA9, 0x9C, 0x07}}
+
+	coInitialize()
+	defer CoUninitialize()
+	actual, err := CLSIDFromProgID("WMPNSSCI.NSSManager")
+	if err == nil {
+		if !IsEqualGUID(expected, actual) {
+			t.Log(err)
+			t.Log(fmt.Sprintf("Actual GUID: %+v\n", actual))
+			t.Fail()
+		}
+	}
+}
+
+func TestClsidFromString_WindowsMediaNSSManager(t *testing.T) {
+	defer func() {
+		if r := recover(); r != nil {
+			t.Log(r)
+			t.Fail()
+		}
+	}()
+
+	expected := &GUID{0x92498132, 0x4D1A, 0x4297, [8]byte{0x9B, 0x78, 0x9E, 0x2E, 0x4B, 0xA9, 0x9C, 0x07}}
+
+	coInitialize()
+	defer CoUninitialize()
+	actual, err := CLSIDFromString("{92498132-4D1A-4297-9B78-9E2E4BA99C07}")
+
+	if !IsEqualGUID(expected, actual) {
+		t.Log(err)
+		t.Log(fmt.Sprintf("Actual GUID: %+v\n", actual))
+		t.Fail()
+	}
+}
+
+func TestCreateInstance_WindowsMediaNSSManager(t *testing.T) {
+	defer func() {
+		if r := recover(); r != nil {
+			t.Log(r)
+			t.Fail()
+		}
+	}()
+
+	expected := &GUID{0x92498132, 0x4D1A, 0x4297, [8]byte{0x9B, 0x78, 0x9E, 0x2E, 0x4B, 0xA9, 0x9C, 0x07}}
+
+	coInitialize()
+	defer CoUninitialize()
+	actual, err := CLSIDFromProgID("WMPNSSCI.NSSManager")
+
+	if err == nil {
+		if !IsEqualGUID(expected, actual) {
+			t.Log(err)
+			t.Log(fmt.Sprintf("Actual GUID: %+v\n", actual))
+			t.Fail()
+		}
+
+		unknown, err := CreateInstance(actual, IID_IUnknown)
+		if err != nil {
+			t.Log(err)
+			t.Fail()
+		}
+		unknown.Release()
+	}
+}
+
+func TestError(t *testing.T) {
+	defer func() {
+		if r := recover(); r != nil {
+			t.Log(r)
+			t.Fail()
+		}
+	}()
+
+	coInitialize()
+	defer CoUninitialize()
+	_, err := CLSIDFromProgID("INTERFACE-NOT-FOUND")
+	if err == nil {
+		t.Fatalf("should be fail: %v", err)
+	}
+
+	switch vt := err.(type) {
+	case *OleError:
+	default:
+		t.Fatalf("should be *ole.OleError %t", vt)
+	}
+}

vendor/github.com/go-ole/go-ole/connect.go

@@ -0,0 +1,192 @@
+package ole
+
+// Connection contains IUnknown for fluent interface interaction.
+//
+// Deprecated. Use oleutil package instead.
+type Connection struct {
+	Object *IUnknown // Access COM
+}
+
+// Initialize COM.
+func (*Connection) Initialize() (err error) {
+	return coInitialize()
+}
+
+// Uninitialize COM.
+func (*Connection) Uninitialize() {
+	CoUninitialize()
+}
+
+// Create IUnknown object based first on ProgId and then from String.
+func (c *Connection) Create(progId string) (err error) {
+	var clsid *GUID
+	clsid, err = CLSIDFromProgID(progId)
+	if err != nil {
+		clsid, err = CLSIDFromString(progId)
+		if err != nil {
+			return
+		}
+	}
+
+	unknown, err := CreateInstance(clsid, IID_IUnknown)
+	if err != nil {
+		return
+	}
+	c.Object = unknown
+
+	return
+}
+
+// Release IUnknown object.
+func (c *Connection) Release() {
+	c.Object.Release()
+}
+
+// Load COM object from list of programIDs or strings.
+func (c *Connection) Load(names ...string) (errors []error) {
+	var tempErrors []error = make([]error, len(names))
+	var numErrors int = 0
+	for _, name := range names {
+		err := c.Create(name)
+		if err != nil {
+			tempErrors = append(tempErrors, err)
+			numErrors += 1
+			continue
+		}
+		break
+	}
+
+	copy(errors, tempErrors[0:numErrors])
+	return
+}
+
+// Dispatch returns Dispatch object.
+func (c *Connection) Dispatch() (object *Dispatch, err error) {
+	dispatch, err := c.Object.QueryInterface(IID_IDispatch)
+	if err != nil {
+		return
+	}
+	object = &Dispatch{dispatch}
+	return
+}
+
+// Dispatch stores IDispatch object.
+type Dispatch struct {
+	Object *IDispatch // Dispatch object.
+}
+
+// Call method on IDispatch with parameters.
+func (d *Dispatch) Call(method string, params ...interface{}) (result *VARIANT, err error) {
+	id, err := d.GetId(method)
+	if err != nil {
+		return
+	}
+
+	result, err = d.Invoke(id, DISPATCH_METHOD, params)
+	return
+}
+
+// MustCall method on IDispatch with parameters.
+func (d *Dispatch) MustCall(method string, params ...interface{}) (result *VARIANT) {
+	id, err := d.GetId(method)
+	if err != nil {
+		panic(err)
+	}
+
+	result, err = d.Invoke(id, DISPATCH_METHOD, params)
+	if err != nil {
+		panic(err)
+	}
+
+	return
+}
+
+// Get property on IDispatch with parameters.
+func (d *Dispatch) Get(name string, params ...interface{}) (result *VARIANT, err error) {
+	id, err := d.GetId(name)
+	if err != nil {
+		return
+	}
+	result, err = d.Invoke(id, DISPATCH_PROPERTYGET, params)
+	return
+}
+
+// MustGet property on IDispatch with parameters.
+func (d *Dispatch) MustGet(name string, params ...interface{}) (result *VARIANT) {
+	id, err := d.GetId(name)
+	if err != nil {
+		panic(err)
+	}
+
+	result, err = d.Invoke(id, DISPATCH_PROPERTYGET, params)
+	if err != nil {
+		panic(err)
+	}
+	return
+}
+
+// Set property on IDispatch with parameters.
+func (d *Dispatch) Set(name string, params ...interface{}) (result *VARIANT, err error) {
+	id, err := d.GetId(name)
+	if err != nil {
+		return
+	}
+	result, err = d.Invoke(id, DISPATCH_PROPERTYPUT, params)
+	return
+}
+
+// MustSet property on IDispatch with parameters.
+func (d *Dispatch) MustSet(name string, params ...interface{}) (result *VARIANT) {
+	id, err := d.GetId(name)
+	if err != nil {
+		panic(err)
+	}
+
+	result, err = d.Invoke(id, DISPATCH_PROPERTYPUT, params)
+	if err != nil {
+		panic(err)
+	}
+	return
+}
+
+// GetId retrieves ID of name on IDispatch.
+func (d *Dispatch) GetId(name string) (id int32, err error) {
+	var dispid []int32
+	dispid, err = d.Object.GetIDsOfName([]string{name})
+	if err != nil {
+		return
+	}
+	id = dispid[0]
+	return
+}
+
+// GetIds retrieves all IDs of names on IDispatch.
+func (d *Dispatch) GetIds(names ...string) (dispid []int32, err error) {
+	dispid, err = d.Object.GetIDsOfName(names)
+	return
+}
+
+// Invoke IDispatch on DisplayID of dispatch type with parameters.
+//
+// There have been problems where if send cascading params..., it would error
+// out because the parameters would be empty.
+func (d *Dispatch) Invoke(id int32, dispatch int16, params []interface{}) (result *VARIANT, err error) {
+	if len(params) < 1 {
+		result, err = d.Object.Invoke(id, dispatch)
+	} else {
+		result, err = d.Object.Invoke(id, dispatch, params...)
+	}
+	return
+}
+
+// Release IDispatch object.
+func (d *Dispatch) Release() {
+	d.Object.Release()
+}
+
+// Connect initializes COM and attempts to load IUnknown based on given names.
+func Connect(names ...string) (connection *Connection) {
+	connection.Initialize()
+	connection.Load(names...)
+	return
+}

vendor/github.com/go-ole/go-ole/connect_test.go

@@ -0,0 +1,159 @@
+// +build !windows
+
+package ole
+
+import "strings"
+
+func Example_quickbooks() {
+	var err error
+
+	connection := &Connection{nil}
+
+	err = connection.Initialize()
+	if err != nil {
+		return
+	}
+	defer connection.Uninitialize()
+
+	err = connection.Create("QBXMLRP2.RequestProcessor.1")
+	if err != nil {
+		if err.(*OleError).Code() == CO_E_CLASSSTRING {
+			return
+		}
+	}
+	defer connection.Release()
+
+	dispatch, err := connection.Dispatch()
+	if err != nil {
+		return
+	}
+	defer dispatch.Release()
+}
+
+func Example_quickbooksConnectHelperCallDispatch() {
+	var err error
+
+	connection := &Connection{nil}
+
+	err = connection.Initialize()
+	if err != nil {
+		return
+	}
+	defer connection.Uninitialize()
+
+	err = connection.Create("QBXMLRP2.RequestProcessor.1")
+	if err != nil {
+		if err.(*OleError).Code() == CO_E_CLASSSTRING {
+			return
+		}
+		return
+	}
+	defer connection.Release()
+
+	dispatch, err := connection.Dispatch()
+	if err != nil {
+		return
+	}
+	defer dispatch.Release()
+
+	var result *VARIANT
+
+	_, err = dispatch.Call("OpenConnection2", "", "Test Application 1", 1)
+	if err != nil {
+		return
+	}
+
+	result, err = dispatch.Call("BeginSession", "", 2)
+	if err != nil {
+		return
+	}
+
+	ticket := result.ToString()
+
+	_, err = dispatch.Call("EndSession", ticket)
+	if err != nil {
+		return
+	}
+
+	_, err = dispatch.Call("CloseConnection")
+	if err != nil {
+		return
+	}
+}
+
+func Example_quickbooksConnectHelperDispatchProperty() {
+	var err error
+
+	connection := &Connection{nil}
+
+	err = connection.Initialize()
+	if err != nil {
+		return
+	}
+	defer connection.Uninitialize()
+
+	err = connection.Create("QBXMLRP2.RequestProcessor.1")
+	if err != nil {
+		if err.(*OleError).Code() == CO_E_CLASSSTRING {
+			return
+		}
+		return
+	}
+	defer connection.Release()
+
+	dispatch, err := connection.Dispatch()
+	if err != nil {
+		return
+	}
+	defer dispatch.Release()
+
+	var result *VARIANT
+
+	_, err = dispatch.Call("OpenConnection2", "", "Test Application 1", 1)
+	if err != nil {
+		return
+	}
+
+	result, err = dispatch.Call("BeginSession", "", 2)
+	if err != nil {
+		return
+	}
+
+	ticket := result.ToString()
+
+	result, err = dispatch.Get("QBXMLVersionsForSession", ticket)
+	if err != nil {
+		return
+	}
+
+	conversion := result.ToArray()
+
+	totalElements, _ := conversion.TotalElements(0)
+	if totalElements != 13 {
+		return
+	}
+
+	versions := conversion.ToStringArray()
+	expectedVersionString := "1.0, 1.1, 2.0, 2.1, 3.0, 4.0, 4.1, 5.0, 6.0, 7.0, 8.0, 9.0, 10.0"
+	versionString := strings.Join(versions, ", ")
+
+	if len(versions) != 13 {
+		return
+	}
+
+	if expectedVersionString != versionString {
+		return
+	}
+
+	conversion.Release()
+
+	_, err = dispatch.Call("EndSession", ticket)
+	if err != nil {
+		return
+	}
+
+	_, err = dispatch.Call("CloseConnection")
+	if err != nil {
+		return
+	}
+}

vendor/github.com/go-ole/go-ole/connect_windows_test.go

@@ -0,0 +1,181 @@
+// +build windows
+
+package ole
+
+import (
+	"fmt"
+	"strings"
+	"testing"
+)
+
+func Example_quickbooks() {
+	var err error
+
+	connection := &Connection{nil}
+
+	err = connection.Initialize()
+	if err != nil {
+		return
+	}
+	defer connection.Uninitialize()
+
+	err = connection.Create("QBXMLRP2.RequestProcessor.1")
+	if err != nil {
+		if err.(*OleError).Code() == CO_E_CLASSSTRING {
+			return
+		}
+	}
+	defer connection.Release()
+
+	dispatch, err := connection.Dispatch()
+	if err != nil {
+		return
+	}
+	defer dispatch.Release()
+}
+
+func TestConnectHelperCallDispatch_QuickBooks(t *testing.T) {
+	var err error
+
+	connection := &Connection{nil}
+
+	err = connection.Initialize()
+	if err != nil {
+		t.Log(err)
+		t.FailNow()
+	}
+	defer connection.Uninitialize()
+
+	err = connection.Create("QBXMLRP2.RequestProcessor.1")
+	if err != nil {
+		if err.(*OleError).Code() == CO_E_CLASSSTRING {
+			return
+		}
+		t.Log(err)
+		t.FailNow()
+	}
+	defer connection.Release()
+
+	dispatch, err := connection.Dispatch()
+	if err != nil {
+		t.Log(err)
+		t.FailNow()
+	}
+	defer dispatch.Release()
+
+	var result *VARIANT
+
+	_, err = dispatch.Call("OpenConnection2", "", "Test Application 1", 1)
+	if err != nil {
+		t.Log(err)
+		t.FailNow()
+	}
+
+	result, err = dispatch.Call("BeginSession", "", 2)
+	if err != nil {
+		t.Log(err)
+		t.FailNow()
+	}
+
+	ticket := result.ToString()
+
+	_, err = dispatch.Call("EndSession", ticket)
+	if err != nil {
+		t.Log(err)
+		t.Fail()
+	}
+
+	_, err = dispatch.Call("CloseConnection")
+	if err != nil {
+		t.Log(err)
+		t.Fail()
+	}
+}
+
+func TestConnectHelperDispatchProperty_QuickBooks(t *testing.T) {
+	var err error
+
+	connection := &Connection{nil}
+
+	err = connection.Initialize()
+	if err != nil {
+		t.Log(err)
+		t.FailNow()
+	}
+	defer connection.Uninitialize()
+
+	err = connection.Create("QBXMLRP2.RequestProcessor.1")
+	if err != nil {
+		if err.(*OleError).Code() == CO_E_CLASSSTRING {
+			return
+		}
+		t.Log(err)
+		t.FailNow()
+	}
+	defer connection.Release()
+
+	dispatch, err := connection.Dispatch()
+	if err != nil {
+		t.Log(err)
+		t.FailNow()
+	}
+	defer dispatch.Release()
+
+	var result *VARIANT
+
+	_, err = dispatch.Call("OpenConnection2", "", "Test Application 1", 1)
+	if err != nil {
+		t.Log(err)
+		t.FailNow()
+	}
+
+	result, err = dispatch.Call("BeginSession", "", 2)
+	if err != nil {
+		t.Log(err)
+		t.FailNow()
+	}
+
+	ticket := result.ToString()
+
+	result, err = dispatch.Get("QBXMLVersionsForSession", ticket)
+	if err != nil {
+		t.Log(err)
+		t.FailNow()
+	}
+
+	conversion := result.ToArray()
+
+	totalElements, _ := conversion.TotalElements(0)
+	if totalElements != 13 {
+		t.Log(fmt.Sprintf("%d total elements does not equal 13\n", totalElements))
+		t.Fail()
+	}
+
+	versions := conversion.ToStringArray()
+	expectedVersionString := "1.0, 1.1, 2.0, 2.1, 3.0, 4.0, 4.1, 5.0, 6.0, 7.0, 8.0, 9.0, 10.0"
+	versionString := strings.Join(versions, ", ")
+
+	if len(versions) != 13 {
+		t.Log(fmt.Sprintf("%s\n", versionString))
+		t.Fail()
+	}
+
+	if expectedVersionString != versionString {
+		t.Log(fmt.Sprintf("Expected: %s\nActual: %s", expectedVersionString, versionString))
+		t.Fail()
+	}
+
+	conversion.Release()
+
+	_, err = dispatch.Call("EndSession", ticket)
+	if err != nil {
+		t.Log(err)
+		t.Fail()
+	}
+
+	_, err = dispatch.Call("CloseConnection")
+	if err != nil {
+		t.Log(err)
+		t.Fail()
+	}
+}

vendor/github.com/go-ole/go-ole/constants.go

@@ -0,0 +1,153 @@
+package ole
+
+const (
+	CLSCTX_INPROC_SERVER   = 1
+	CLSCTX_INPROC_HANDLER  = 2
+	CLSCTX_LOCAL_SERVER    = 4
+	CLSCTX_INPROC_SERVER16 = 8
+	CLSCTX_REMOTE_SERVER   = 16
+	CLSCTX_ALL             = CLSCTX_INPROC_SERVER | CLSCTX_INPROC_HANDLER | CLSCTX_LOCAL_SERVER
+	CLSCTX_INPROC          = CLSCTX_INPROC_SERVER | CLSCTX_INPROC_HANDLER
+	CLSCTX_SERVER          = CLSCTX_INPROC_SERVER | CLSCTX_LOCAL_SERVER | CLSCTX_REMOTE_SERVER
+)
+
+const (
+	COINIT_APARTMENTTHREADED = 0x2
+	COINIT_MULTITHREADED     = 0x0
+	COINIT_DISABLE_OLE1DDE   = 0x4
+	COINIT_SPEED_OVER_MEMORY = 0x8
+)
+
+const (
+	DISPATCH_METHOD         = 1
+	DISPATCH_PROPERTYGET    = 2
+	DISPATCH_PROPERTYPUT    = 4
+	DISPATCH_PROPERTYPUTREF = 8
+)
+
+const (
+	S_OK           = 0x00000000
+	E_UNEXPECTED   = 0x8000FFFF
+	E_NOTIMPL      = 0x80004001
+	E_OUTOFMEMORY  = 0x8007000E
+	E_INVALIDARG   = 0x80070057
+	E_NOINTERFACE  = 0x80004002
+	E_POINTER      = 0x80004003
+	E_HANDLE       = 0x80070006
+	E_ABORT        = 0x80004004
+	E_FAIL         = 0x80004005
+	E_ACCESSDENIED = 0x80070005
+	E_PENDING      = 0x8000000A
+
+	CO_E_CLASSSTRING = 0x800401F3
+)
+
+const (
+	CC_FASTCALL = iota
+	CC_CDECL
+	CC_MSCPASCAL
+	CC_PASCAL = CC_MSCPASCAL
+	CC_MACPASCAL
+	CC_STDCALL
+	CC_FPFASTCALL
+	CC_SYSCALL
+	CC_MPWCDECL
+	CC_MPWPASCAL
+	CC_MAX = CC_MPWPASCAL
+)
+
+type VT uint16
+
+const (
+	VT_EMPTY           VT = 0x0
+	VT_NULL            VT = 0x1
+	VT_I2              VT = 0x2
+	VT_I4              VT = 0x3
+	VT_R4              VT = 0x4
+	VT_R8              VT = 0x5
+	VT_CY              VT = 0x6
+	VT_DATE            VT = 0x7
+	VT_BSTR            VT = 0x8
+	VT_DISPATCH        VT = 0x9
+	VT_ERROR           VT = 0xa
+	VT_BOOL            VT = 0xb
+	VT_VARIANT         VT = 0xc
+	VT_UNKNOWN         VT = 0xd
+	VT_DECIMAL         VT = 0xe
+	VT_I1              VT = 0x10
+	VT_UI1             VT = 0x11
+	VT_UI2             VT = 0x12
+	VT_UI4             VT = 0x13
+	VT_I8              VT = 0x14
+	VT_UI8             VT = 0x15
+	VT_INT             VT = 0x16
+	VT_UINT            VT = 0x17
+	VT_VOID            VT = 0x18
+	VT_HRESULT         VT = 0x19
+	VT_PTR             VT = 0x1a
+	VT_SAFEARRAY       VT = 0x1b
+	VT_CARRAY          VT = 0x1c
+	VT_USERDEFINED     VT = 0x1d
+	VT_LPSTR           VT = 0x1e
+	VT_LPWSTR          VT = 0x1f
+	VT_RECORD          VT = 0x24
+	VT_INT_PTR         VT = 0x25
+	VT_UINT_PTR        VT = 0x26
+	VT_FILETIME        VT = 0x40
+	VT_BLOB            VT = 0x41
+	VT_STREAM          VT = 0x42
+	VT_STORAGE         VT = 0x43
+	VT_STREAMED_OBJECT VT = 0x44
+	VT_STORED_OBJECT   VT = 0x45
+	VT_BLOB_OBJECT     VT = 0x46
+	VT_CF              VT = 0x47
+	VT_CLSID           VT = 0x48
+	VT_BSTR_BLOB       VT = 0xfff
+	VT_VECTOR          VT = 0x1000
+	VT_ARRAY           VT = 0x2000
+	VT_BYREF           VT = 0x4000
+	VT_RESERVED        VT = 0x8000
+	VT_ILLEGAL         VT = 0xffff
+	VT_ILLEGALMASKED   VT = 0xfff
+	VT_TYPEMASK        VT = 0xfff
+)
+
+const (
+	DISPID_UNKNOWN     = -1
+	DISPID_VALUE       = 0
+	DISPID_PROPERTYPUT = -3
+	DISPID_NEWENUM     = -4
+	DISPID_EVALUATE    = -5
+	DISPID_CONSTRUCTOR = -6
+	DISPID_DESTRUCTOR  = -7
+	DISPID_COLLECT     = -8
+)
+
+const (
+	TKIND_ENUM      = 1
+	TKIND_RECORD    = 2
+	TKIND_MODULE    = 3
+	TKIND_INTERFACE = 4
+	TKIND_DISPATCH  = 5
+	TKIND_COCLASS   = 6
+	TKIND_ALIAS     = 7
+	TKIND_UNION     = 8
+	TKIND_MAX       = 9
+)
+
+// Safe Array Feature Flags
+
+const (
+	FADF_AUTO        = 0x0001
+	FADF_STATIC      = 0x0002
+	FADF_EMBEDDED    = 0x0004
+	FADF_FIXEDSIZE   = 0x0010
+	FADF_RECORD      = 0x0020
+	FADF_HAVEIID     = 0x0040
+	FADF_HAVEVARTYPE = 0x0080
+	FADF_BSTR        = 0x0100
+	FADF_UNKNOWN     = 0x0200
+	FADF_DISPATCH    = 0x0400
+	FADF_VARIANT     = 0x0800
+	FADF_RESERVED    = 0xF008
+)

vendor/github.com/go-ole/go-ole/error.go

@@ -0,0 +1,51 @@
+package ole
+
+// OleError stores COM errors.
+type OleError struct {
+	hr          uintptr
+	description string
+	subError    error
+}
+
+// NewError creates new error with HResult.
+func NewError(hr uintptr) *OleError {
+	return &OleError{hr: hr}
+}
+
+// NewErrorWithDescription creates new COM error with HResult and description.
+func NewErrorWithDescription(hr uintptr, description string) *OleError {
+	return &OleError{hr: hr, description: description}
+}
+
+// NewErrorWithSubError creates new COM error with parent error.
+func NewErrorWithSubError(hr uintptr, description string, err error) *OleError {
+	return &OleError{hr: hr, description: description, subError: err}
+}
+
+// Code is the HResult.
+func (v *OleError) Code() uintptr {
+	return uintptr(v.hr)
+}
+
+// String description, either manually set or format message with error code.
+func (v *OleError) String() string {
+	if v.description != "" {
+		return errstr(int(v.hr)) + " (" + v.description + ")"
+	}
+	return errstr(int(v.hr))
+}
+
+// Error implements error interface.
+func (v *OleError) Error() string {
+	return v.String()
+}
+
+// Description retrieves error summary, if there is one.
+func (v *OleError) Description() string {
+	return v.description
+}
+
+// SubError returns parent error, if there is one.
+func (v *OleError) SubError() error {
+	return v.subError
+}

vendor/github.com/go-ole/go-ole/error_func.go

@@ -0,0 +1,8 @@
+// +build !windows
+
+package ole
+
+// errstr converts error code to string.
+func errstr(errno int) string {
+	return ""
+}

vendor/github.com/go-ole/go-ole/error_windows.go

@@ -0,0 +1,24 @@
+// +build windows
+
+package ole
+
+import (
+	"fmt"
+	"syscall"
+	"unicode/utf16"
+)
+
+// errstr converts error code to string.
+func errstr(errno int) string {
+	// ask windows for the remaining errors
+	var flags uint32 = syscall.FORMAT_MESSAGE_FROM_SYSTEM | syscall.FORMAT_MESSAGE_ARGUMENT_ARRAY | syscall.FORMAT_MESSAGE_IGNORE_INSERTS
+	b := make([]uint16, 300)
+	n, err := syscall.FormatMessage(flags, 0, uint32(errno), 0, b, nil)
+	if err != nil {
+		return fmt.Sprintf("error %d (FormatMessage failed with: %v)", errno, err)
+	}
+	// trim terminating \r and \n
+	for ; n > 0 && (b[n-1] == '\n' || b[n-1] == '\r'); n-- {
+	}
+	return string(utf16.Decode(b[:n]))
+}

vendor/github.com/go-ole/go-ole/go.mod

@@ -0,0 +1,3 @@
+module github.com/go-ole/go-ole
+
+go 1.12

vendor/github.com/go-ole/go-ole/guid.go

@@ -0,0 +1,284 @@
+package ole
+
+var (
+	// IID_NULL is null Interface ID, used when no other Interface ID is known.
+	IID_NULL = NewGUID("{00000000-0000-0000-0000-000000000000}")
+
+	// IID_IUnknown is for IUnknown interfaces.
+	IID_IUnknown = NewGUID("{00000000-0000-0000-C000-000000000046}")
+
+	// IID_IDispatch is for IDispatch interfaces.
+	IID_IDispatch = NewGUID("{00020400-0000-0000-C000-000000000046}")
+
+	// IID_IEnumVariant is for IEnumVariant interfaces
+	IID_IEnumVariant = NewGUID("{00020404-0000-0000-C000-000000000046}")
+
+	// IID_IConnectionPointContainer is for IConnectionPointContainer interfaces.
+	IID_IConnectionPointContainer = NewGUID("{B196B284-BAB4-101A-B69C-00AA00341D07}")
+
+	// IID_IConnectionPoint is for IConnectionPoint interfaces.
+	IID_IConnectionPoint = NewGUID("{B196B286-BAB4-101A-B69C-00AA00341D07}")
+
+	// IID_IInspectable is for IInspectable interfaces.
+	IID_IInspectable = NewGUID("{AF86E2E0-B12D-4C6A-9C5A-D7AA65101E90}")
+
+	// IID_IProvideClassInfo is for IProvideClassInfo interfaces.
+	IID_IProvideClassInfo = NewGUID("{B196B283-BAB4-101A-B69C-00AA00341D07}")
+)
+
+// These are for testing and not part of any library.
+var (
+	// IID_ICOMTestString is for ICOMTestString interfaces.
+	//
+	// {E0133EB4-C36F-469A-9D3D-C66B84BE19ED}
+	IID_ICOMTestString = NewGUID("{E0133EB4-C36F-469A-9D3D-C66B84BE19ED}")
+
+	// IID_ICOMTestInt8 is for ICOMTestInt8 interfaces.
+	//
+	// {BEB06610-EB84-4155-AF58-E2BFF53680B4}
+	IID_ICOMTestInt8 = NewGUID("{BEB06610-EB84-4155-AF58-E2BFF53680B4}")
+
+	// IID_ICOMTestInt16 is for ICOMTestInt16 interfaces.
+	//
+	// {DAA3F9FA-761E-4976-A860-8364CE55F6FC}
+	IID_ICOMTestInt16 = NewGUID("{DAA3F9FA-761E-4976-A860-8364CE55F6FC}")
+
+	// IID_ICOMTestInt32 is for ICOMTestInt32 interfaces.
+	//
+	// {E3DEDEE7-38A2-4540-91D1-2EEF1D8891B0}
+	IID_ICOMTestInt32 = NewGUID("{E3DEDEE7-38A2-4540-91D1-2EEF1D8891B0}")
+
+	// IID_ICOMTestInt64 is for ICOMTestInt64 interfaces.
+	//
+	// {8D437CBC-B3ED-485C-BC32-C336432A1623}
+	IID_ICOMTestInt64 = NewGUID("{8D437CBC-B3ED-485C-BC32-C336432A1623}")
+
+	// IID_ICOMTestFloat is for ICOMTestFloat interfaces.
+	//
+	// {BF1ED004-EA02-456A-AA55-2AC8AC6B054C}
+	IID_ICOMTestFloat = NewGUID("{BF1ED004-EA02-456A-AA55-2AC8AC6B054C}")
+
+	// IID_ICOMTestDouble is for ICOMTestDouble interfaces.
+	//
+	// {BF908A81-8687-4E93-999F-D86FAB284BA0}
+	IID_ICOMTestDouble = NewGUID("{BF908A81-8687-4E93-999F-D86FAB284BA0}")
+
+	// IID_ICOMTestBoolean is for ICOMTestBoolean interfaces.
+	//
+	// {D530E7A6-4EE8-40D1-8931-3D63B8605010}
+	IID_ICOMTestBoolean = NewGUID("{D530E7A6-4EE8-40D1-8931-3D63B8605010}")
+
+	// IID_ICOMEchoTestObject is for ICOMEchoTestObject interfaces.
+	//
+	// {6485B1EF-D780-4834-A4FE-1EBB51746CA3}
+	IID_ICOMEchoTestObject = NewGUID("{6485B1EF-D780-4834-A4FE-1EBB51746CA3}")
+
+	// IID_ICOMTestTypes is for ICOMTestTypes interfaces.
+	//
+	// {CCA8D7AE-91C0-4277-A8B3-FF4EDF28D3C0}
+	IID_ICOMTestTypes = NewGUID("{CCA8D7AE-91C0-4277-A8B3-FF4EDF28D3C0}")
+
+	// CLSID_COMEchoTestObject is for COMEchoTestObject class.
+	//
+	// {3C24506A-AE9E-4D50-9157-EF317281F1B0}
+	CLSID_COMEchoTestObject = NewGUID("{3C24506A-AE9E-4D50-9157-EF317281F1B0}")
+
+	// CLSID_COMTestScalarClass is for COMTestScalarClass class.
+	//
+	// {865B85C5-0334-4AC6-9EF6-AACEC8FC5E86}
+	CLSID_COMTestScalarClass = NewGUID("{865B85C5-0334-4AC6-9EF6-AACEC8FC5E86}")
+)
+
+const hextable = "0123456789ABCDEF"
+const emptyGUID = "{00000000-0000-0000-0000-000000000000}"
+
+// GUID is Windows API specific GUID type.
+//
+// This exists to match Windows GUID type for direct passing for COM.
+// Format is in xxxxxxxx-xxxx-xxxx-xxxxxxxxxxxxxxxx.
+type GUID struct {
+	Data1 uint32
+	Data2 uint16
+	Data3 uint16
+	Data4 [8]byte
+}
+
+// NewGUID converts the given string into a globally unique identifier that is
+// compliant with the Windows API.
+//
+// The supplied string may be in any of these formats:
+//
+//  XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
+//  XXXXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXXX
+//  {XXXXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXXX}
+//
+// The conversion of the supplied string is not case-sensitive.
+func NewGUID(guid string) *GUID {
+	d := []byte(guid)
+	var d1, d2, d3, d4a, d4b []byte
+
+	switch len(d) {
+	case 38:
+		if d[0] != '{' || d[37] != '}' {
+			return nil
+		}
+		d = d[1:37]
+		fallthrough
+	case 36:
+		if d[8] != '-' || d[13] != '-' || d[18] != '-' || d[23] != '-' {
+			return nil
+		}
+		d1 = d[0:8]
+		d2 = d[9:13]
+		d3 = d[14:18]
+		d4a = d[19:23]
+		d4b = d[24:36]
+	case 32:
+		d1 = d[0:8]
+		d2 = d[8:12]
+		d3 = d[12:16]
+		d4a = d[16:20]
+		d4b = d[20:32]
+	default:
+		return nil
+	}
+
+	var g GUID
+	var ok1, ok2, ok3, ok4 bool
+	g.Data1, ok1 = decodeHexUint32(d1)
+	g.Data2, ok2 = decodeHexUint16(d2)
+	g.Data3, ok3 = decodeHexUint16(d3)
+	g.Data4, ok4 = decodeHexByte64(d4a, d4b)
+	if ok1 && ok2 && ok3 && ok4 {
+		return &g
+	}
+	return nil
+}
+
+func decodeHexUint32(src []byte) (value uint32, ok bool) {
+	var b1, b2, b3, b4 byte
+	var ok1, ok2, ok3, ok4 bool
+	b1, ok1 = decodeHexByte(src[0], src[1])
+	b2, ok2 = decodeHexByte(src[2], src[3])
+	b3, ok3 = decodeHexByte(src[4], src[5])
+	b4, ok4 = decodeHexByte(src[6], src[7])
+	value = (uint32(b1) << 24) | (uint32(b2) << 16) | (uint32(b3) << 8) | uint32(b4)
+	ok = ok1 && ok2 && ok3 && ok4
+	return
+}
+
+func decodeHexUint16(src []byte) (value uint16, ok bool) {
+	var b1, b2 byte
+	var ok1, ok2 bool
+	b1, ok1 = decodeHexByte(src[0], src[1])
+	b2, ok2 = decodeHexByte(src[2], src[3])
+	value = (uint16(b1) << 8) | uint16(b2)
+	ok = ok1 && ok2
+	return
+}
+
+func decodeHexByte64(s1 []byte, s2 []byte) (value [8]byte, ok bool) {
+	var ok1, ok2, ok3, ok4, ok5, ok6, ok7, ok8 bool
+	value[0], ok1 = decodeHexByte(s1[0], s1[1])
+	value[1], ok2 = decodeHexByte(s1[2], s1[3])
+	value[2], ok3 = decodeHexByte(s2[0], s2[1])
+	value[3], ok4 = decodeHexByte(s2[2], s2[3])
+	value[4], ok5 = decodeHexByte(s2[4], s2[5])
+	value[5], ok6 = decodeHexByte(s2[6], s2[7])
+	value[6], ok7 = decodeHexByte(s2[8], s2[9])
+	value[7], ok8 = decodeHexByte(s2[10], s2[11])
+	ok = ok1 && ok2 && ok3 && ok4 && ok5 && ok6 && ok7 && ok8
+	return
+}
+
+func decodeHexByte(c1, c2 byte) (value byte, ok bool) {
+	var n1, n2 byte
+	var ok1, ok2 bool
+	n1, ok1 = decodeHexChar(c1)
+	n2, ok2 = decodeHexChar(c2)
+	value = (n1 << 4) | n2
+	ok = ok1 && ok2
+	return
+}
+
+func decodeHexChar(c byte) (byte, bool) {
+	switch {
+	case '0' <= c && c <= '9':
+		return c - '0', true
+	case 'a' <= c && c <= 'f':
+		return c - 'a' + 10, true
+	case 'A' <= c && c <= 'F':
+		return c - 'A' + 10, true
+	}
+
+	return 0, false
+}
+
+// String converts the GUID to string form. It will adhere to this pattern:
+//
+//  {XXXXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXXX}
+//
+// If the GUID is nil, the string representation of an empty GUID is returned:
+//
+//  {00000000-0000-0000-0000-000000000000}
+func (guid *GUID) String() string {
+	if guid == nil {
+		return emptyGUID
+	}
+
+	var c [38]byte
+	c[0] = '{'
+	putUint32Hex(c[1:9], guid.Data1)
+	c[9] = '-'
+	putUint16Hex(c[10:14], guid.Data2)
+	c[14] = '-'
+	putUint16Hex(c[15:19], guid.Data3)
+	c[19] = '-'
+	putByteHex(c[20:24], guid.Data4[0:2])
+	c[24] = '-'
+	putByteHex(c[25:37], guid.Data4[2:8])
+	c[37] = '}'
+	return string(c[:])
+}
+
+func putUint32Hex(b []byte, v uint32) {
+	b[0] = hextable[byte(v>>24)>>4]
+	b[1] = hextable[byte(v>>24)&0x0f]
+	b[2] = hextable[byte(v>>16)>>4]
+	b[3] = hextable[byte(v>>16)&0x0f]
+	b[4] = hextable[byte(v>>8)>>4]
+	b[5] = hextable[byte(v>>8)&0x0f]
+	b[6] = hextable[byte(v)>>4]
+	b[7] = hextable[byte(v)&0x0f]
+}
+
+func putUint16Hex(b []byte, v uint16) {
+	b[0] = hextable[byte(v>>8)>>4]
+	b[1] = hextable[byte(v>>8)&0x0f]
+	b[2] = hextable[byte(v)>>4]
+	b[3] = hextable[byte(v)&0x0f]
+}
+
+func putByteHex(dst, src []byte) {
+	for i := 0; i < len(src); i++ {
+		dst[i*2] = hextable[src[i]>>4]
+		dst[i*2+1] = hextable[src[i]&0x0f]
+	}
+}
+
+// IsEqualGUID compares two GUID.
+//
+// Not constant time comparison.
+func IsEqualGUID(guid1 *GUID, guid2 *GUID) bool {
+	return guid1.Data1 == guid2.Data1 &&
+		guid1.Data2 == guid2.Data2 &&
+		guid1.Data3 == guid2.Data3 &&
+		guid1.Data4[0] == guid2.Data4[0] &&
+		guid1.Data4[1] == guid2.Data4[1] &&
+		guid1.Data4[2] == guid2.Data4[2] &&
+		guid1.Data4[3] == guid2.Data4[3] &&
+		guid1.Data4[4] == guid2.Data4[4] &&
+		guid1.Data4[5] == guid2.Data4[5] &&
+		guid1.Data4[6] == guid2.Data4[6] &&
+		guid1.Data4[7] == guid2.Data4[7]
+}

vendor/github.com/go-ole/go-ole/guid_test.go

@@ -0,0 +1,80 @@
+package ole
+
+import (
+	"strings"
+	"testing"
+)
+
+var guidFixtures = []struct {
+	Name        string
+	S           string
+	G           *GUID
+	ShouldMatch bool
+}{
+	{"NULL", "{00000000-0000-0000-0000-000000000000}", &GUID{0x00000000, 0x0000, 0x0000, [8]byte{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}}, true},
+	{"IUnknown", "{00000000-0000-0000-C000-000000000046}", &GUID{0x00000000, 0x0000, 0x0000, [8]byte{0xC0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x46}}, true},
+	{"IDispatch", "{00020400-0000-0000-C000-000000000046}", &GUID{0x00020400, 0x0000, 0x0000, [8]byte{0xC0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x46}}, true},
+	{"IEnumVariant", "{00020404-0000-0000-C000-000000000046}", &GUID{0x00020404, 0x0000, 0x0000, [8]byte{0xC0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x46}}, true},
+	{"IConnectionPointContainer", "{B196B284-BAB4-101A-B69C-00AA00341D07}", &GUID{0xB196B284, 0xBAB4, 0x101A, [8]byte{0xB6, 0x9C, 0x00, 0xAA, 0x00, 0x34, 0x1D, 0x07}}, true},
+	{"IConnectionPoint", "{B196B286-BAB4-101A-B69C-00AA00341D07}", &GUID{0xB196B286, 0xBAB4, 0x101A, [8]byte{0xB6, 0x9C, 0x00, 0xAA, 0x00, 0x34, 0x1D, 0x07}}, true},
+	{"IInspectable", "{AF86E2E0-B12D-4C6A-9C5A-D7AA65101E90}", &GUID{0xaf86e2e0, 0xb12d, 0x4c6a, [8]byte{0x9c, 0x5a, 0xd7, 0xaa, 0x65, 0x10, 0x1e, 0x90}}, true},
+	{"IProvideClassInfo", "{B196B283-BAB4-101A-B69C-00AA00341D07}", &GUID{0xb196b283, 0xbab4, 0x101a, [8]byte{0xB6, 0x9C, 0x00, 0xAA, 0x00, 0x34, 0x1D, 0x07}}, true},
+	{"ICOMTestInt64", "{8D437CBC-B3ED-485C-BC32-C336432A1623}", &GUID{0x8d437cbc, 0xb3ed, 0x485c, [8]byte{0xbc, 0x32, 0xc3, 0x36, 0x43, 0x2a, 0x16, 0x23}}, true},
+	{"Pattern1", "{10000000-1000-1000-1000-100000000000}", &GUID{0x10000000, 0x1000, 0x1000, [8]byte{0x10, 0x00, 0x10, 0x00, 0x00, 0x00, 0x00, 0x00}}, true},
+	{"Pattern2", "{01000000-0100-0100-0100-010000000000}", &GUID{0x01000000, 0x0100, 0x0100, [8]byte{0x01, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00}}, true},
+	{"Pattern3", "{00100000-0010-0010-0010-001000000000}", &GUID{0x00100000, 0x0010, 0x0010, [8]byte{0x00, 0x10, 0x00, 0x10, 0x00, 0x00, 0x00, 0x00}}, true},
+	{"Pattern4", "{00010000-0001-0001-0001-000100000000}", &GUID{0x00010000, 0x0001, 0x0001, [8]byte{0x00, 0x01, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00}}, true},
+	{"Pattern5", "{a000a000-a000-a000-a000-a000a000a000}", &GUID{0xa000a000, 0xa000, 0xa000, [8]byte{0xa0, 0x00, 0xa0, 0x00, 0xa0, 0x00, 0xa0, 0x00}}, true},
+	{"Pattern6", "{0aaa0aaa-0aaa-0aaa-0aaa-0aaa0aaa0aaa}", &GUID{0x0aaa0aaa, 0x0aaa, 0x0aaa, [8]byte{0x0a, 0xaa, 0x0a, 0xaa, 0x0a, 0xaa, 0x0a, 0xaa}}, true},
+	{"Sequence1", "{12345678-1234-1234-1234-123456789abc}", &GUID{0x12345678, 0x1234, 0x1234, [8]byte{0x12, 0x34, 0x12, 0x34, 0x56, 0x78, 0x9a, 0xbc}}, true},
+	{"Sequence2", "12345678-1234-1234-1234-123456789abc", &GUID{0x12345678, 0x1234, 0x1234, [8]byte{0x12, 0x34, 0x12, 0x34, 0x56, 0x78, 0x9a, 0xbc}}, false},
+	{"Sequence3", "12345678123412341234123456789abc", &GUID{0x12345678, 0x1234, 0x1234, [8]byte{0x12, 0x34, 0x12, 0x34, 0x56, 0x78, 0x9a, 0xbc}}, false},
+	{"CaseUpper1", "{ABCDEFAB-ABCD-ABCD-ABCD-ABCDEFABCDEF}", &GUID{0xabcdefab, 0xabcd, 0xabcd, [8]byte{0xab, 0xcd, 0xab, 0xcd, 0xef, 0xab, 0xcd, 0xef}}, true},
+	{"CaseUpper2", "ABCDEFAB-ABCD-ABCD-ABCD-ABCDEFABCDEF", &GUID{0xabcdefab, 0xabcd, 0xabcd, [8]byte{0xab, 0xcd, 0xab, 0xcd, 0xef, 0xab, 0xcd, 0xef}}, false},
+	{"CaseUpper3", "ABCDEFABABCDABCDABCDABCDEFABCDEF", &GUID{0xabcdefab, 0xabcd, 0xabcd, [8]byte{0xab, 0xcd, 0xab, 0xcd, 0xef, 0xab, 0xcd, 0xef}}, false},
+	{"CaseLower1", "{abcdefab-abcd-abcd-abcd-abcdefabcdef}", &GUID{0xabcdefab, 0xabcd, 0xabcd, [8]byte{0xab, 0xcd, 0xab, 0xcd, 0xef, 0xab, 0xcd, 0xef}}, true},
+	{"CaseLower2", "abcdefab-abcd-abcd-abcd-abcdefabcdef", &GUID{0xabcdefab, 0xabcd, 0xabcd, [8]byte{0xab, 0xcd, 0xab, 0xcd, 0xef, 0xab, 0xcd, 0xef}}, false},
+	{"CaseLower3", "abcdefababcdabcdabcdabcdefabcdef", &GUID{0xabcdefab, 0xabcd, 0xabcd, [8]byte{0xab, 0xcd, 0xab, 0xcd, 0xef, 0xab, 0xcd, 0xef}}, false},
+	{"CaseMixed1", "{AbCdEfAb-AbCd-AbCd-AbCd-AbCdEfAbCdEf}", &GUID{0xabcdefab, 0xabcd, 0xabcd, [8]byte{0xab, 0xcd, 0xab, 0xcd, 0xef, 0xab, 0xcd, 0xef}}, true},
+	{"CaseMixed2", "{fEdCbAfE-fEdC-fEdC-fEdC-fEdCbAfEdCbA}", &GUID{0xfedcbafe, 0xfedc, 0xfedc, [8]byte{0xfe, 0xdc, 0xfe, 0xdc, 0xba, 0xfe, 0xdc, 0xba}}, true},
+	{"Empty", "", nil, false},
+	{"EmptyBrackets", "{}", nil, false},
+	{"GarbageDash1", "----", nil, false},
+	{"GarbageDash2", "------------------------------------", nil, false},
+	{"GarbageDash3", "{------------------------------------}", nil, false},
+	{"GarbagePadding1", " {abcdefab-abcd-abcd-abcd-abcdefabcdef}", nil, false},
+	{"GarbagePadding2", "{abcdefab-abcd-abcd-abcd-abcdefabcdef} ", nil, false},
+	{"GarbagePadding3", " abcdefab-abcd-abcd-abcd-abcdefabcdef", nil, false},
+	{"GarbagePadding4", "abcdefab-abcd-abcd-abcd-abcdefabcdef ", nil, false},
+	{"GarbagePadding5", " abcdefababcdabcdabcdabcdefabcdef", nil, false},
+	{"GarbagePadding6", "abcdefababcdabcdabcdabcdefabcdef ", nil, false},
+	{"Garbage1", "AFR*@)#$BNHRO*IABNFVaaa", nil, false},
+	{"Garbage2", "#@*%@#&^%382765*@^#*&^%R*@&#%R7632", nil, false},
+	{"Garbage3", "#@*%@#&^%382765*@^#*&^%R*@&#%R76377^2", nil, false},
+	{"Garbage4", "{ABCDEFA*-ABCD-ABCD-ABCD-ABCDEFABCDEF}", nil, false},
+	{"Garbage5", "{gggggggg-ABCD-ABCD-ABCD-ABCDEFABCDEF}", nil, false},
+}
+
+// TestGUID tests both NewGUID and GUID.String.
+func TestGUID(t *testing.T) {
+	for i := 0; i < len(guidFixtures); i++ {
+		guid := NewGUID(guidFixtures[i].S)
+		f := guidFixtures[i]
+		if guid == nil {
+			if f.G != nil {
+				t.Errorf("GUID test \"%v\" (%v of %v) failed. Expected %v from NewGUID. Received <nil> instead.", f.Name, i, len(guidFixtures), f.G)
+			}
+		} else if f.G == nil {
+			t.Errorf("GUID test \"%v\" (%v of %v) failed. Expected <nil> from NewGUID. Received %v instead.", f.Name, i, len(guidFixtures), guid)
+		}
+		if guid == nil || f.G == nil {
+			continue
+		}
+		if !IsEqualGUID(guid, f.G) {
+			t.Errorf("GUID test \"%v\" (%v of %v) failed. Expected %v from NewGUID. Received %v instead.", f.Name, i, len(guidFixtures), f.G, guid)
+		}
+		if f.ShouldMatch && guid.String() != strings.ToUpper(f.S) {
+			t.Errorf("GUID test \"%v\" (%v of %v) failed. Expected \"%v\" from GUID.String. Received \"%v\" instead.", f.Name, i, len(guidFixtures), strings.ToUpper(f.S), guid)
+		}
+	}
+}

vendor/github.com/go-ole/go-ole/iconnectionpoint.go

@@ -0,0 +1,20 @@
+package ole
+
+import "unsafe"
+
+type IConnectionPoint struct {
+	IUnknown
+}
+
+type IConnectionPointVtbl struct {
+	IUnknownVtbl
+	GetConnectionInterface      uintptr
+	GetConnectionPointContainer uintptr
+	Advise                      uintptr
+	Unadvise                    uintptr
+	EnumConnections             uintptr
+}
+
+func (v *IConnectionPoint) VTable() *IConnectionPointVtbl {
+	return (*IConnectionPointVtbl)(unsafe.Pointer(v.RawVTable))
+}

vendor/github.com/go-ole/go-ole/iconnectionpoint_func.go

@@ -0,0 +1,21 @@
+// +build !windows
+
+package ole
+
+import "unsafe"
+
+func (v *IConnectionPoint) GetConnectionInterface(piid **GUID) int32 {
+	return int32(0)
+}
+
+func (v *IConnectionPoint) Advise(unknown *IUnknown) (uint32, error) {
+	return uint32(0), NewError(E_NOTIMPL)
+}
+
+func (v *IConnectionPoint) Unadvise(cookie uint32) error {
+	return NewError(E_NOTIMPL)
+}
+
+func (v *IConnectionPoint) EnumConnections(p *unsafe.Pointer) (err error) {
+	return NewError(E_NOTIMPL)
+}

vendor/github.com/go-ole/go-ole/iconnectionpoint_windows.go

@@ -0,0 +1,43 @@
+// +build windows
+
+package ole
+
+import (
+	"syscall"
+	"unsafe"
+)
+
+func (v *IConnectionPoint) GetConnectionInterface(piid **GUID) int32 {
+	// XXX: This doesn't look like it does what it's supposed to
+	return release((*IUnknown)(unsafe.Pointer(v)))
+}
+
+func (v *IConnectionPoint) Advise(unknown *IUnknown) (cookie uint32, err error) {
+	hr, _, _ := syscall.Syscall(
+		v.VTable().Advise,
+		3,
+		uintptr(unsafe.Pointer(v)),
+		uintptr(unsafe.Pointer(unknown)),
+		uintptr(unsafe.Pointer(&cookie)))
+	if hr != 0 {
+		err = NewError(hr)
+	}
+	return
+}
+
+func (v *IConnectionPoint) Unadvise(cookie uint32) (err error) {
+	hr, _, _ := syscall.Syscall(
+		v.VTable().Unadvise,
+		2,
+		uintptr(unsafe.Pointer(v)),
+		uintptr(cookie),
+		0)
+	if hr != 0 {
+		err = NewError(hr)
+	}
+	return
+}
+
+func (v *IConnectionPoint) EnumConnections(p *unsafe.Pointer) error {
+	return NewError(E_NOTIMPL)
+}

vendor/github.com/go-ole/go-ole/iconnectionpointcontainer.go

@@ -0,0 +1,17 @@
+package ole
+
+import "unsafe"
+
+type IConnectionPointContainer struct {
+	IUnknown
+}
+
+type IConnectionPointContainerVtbl struct {
+	IUnknownVtbl
+	EnumConnectionPoints uintptr
+	FindConnectionPoint  uintptr
+}
+
+func (v *IConnectionPointContainer) VTable() *IConnectionPointContainerVtbl {
+	return (*IConnectionPointContainerVtbl)(unsafe.Pointer(v.RawVTable))
+}

vendor/github.com/go-ole/go-ole/iconnectionpointcontainer_func.go

@@ -0,0 +1,11 @@
+// +build !windows
+
+package ole
+
+func (v *IConnectionPointContainer) EnumConnectionPoints(points interface{}) error {
+	return NewError(E_NOTIMPL)
+}
+
+func (v *IConnectionPointContainer) FindConnectionPoint(iid *GUID, point **IConnectionPoint) error {
+	return NewError(E_NOTIMPL)
+}

vendor/github.com/go-ole/go-ole/iconnectionpointcontainer_windows.go

@@ -0,0 +1,25 @@
+// +build windows
+
+package ole
+
+import (
+	"syscall"
+	"unsafe"
+)
+
+func (v *IConnectionPointContainer) EnumConnectionPoints(points interface{}) error {
+	return NewError(E_NOTIMPL)
+}
+
+func (v *IConnectionPointContainer) FindConnectionPoint(iid *GUID, point **IConnectionPoint) (err error) {
+	hr, _, _ := syscall.Syscall(
+		v.VTable().FindConnectionPoint,
+		3,
+		uintptr(unsafe.Pointer(v)),
+		uintptr(unsafe.Pointer(iid)),
+		uintptr(unsafe.Pointer(point)))
+	if hr != 0 {
+		err = NewError(hr)
+	}
+	return
+}

vendor/github.com/go-ole/go-ole/idispatch.go

@@ -0,0 +1,94 @@
+package ole
+
+import "unsafe"
+
+type IDispatch struct {
+	IUnknown
+}
+
+type IDispatchVtbl struct {
+	IUnknownVtbl
+	GetTypeInfoCount uintptr
+	GetTypeInfo      uintptr
+	GetIDsOfNames    uintptr
+	Invoke           uintptr
+}
+
+func (v *IDispatch) VTable() *IDispatchVtbl {
+	return (*IDispatchVtbl)(unsafe.Pointer(v.RawVTable))
+}
+
+func (v *IDispatch) GetIDsOfName(names []string) (dispid []int32, err error) {
+	dispid, err = getIDsOfName(v, names)
+	return
+}
+
+func (v *IDispatch) Invoke(dispid int32, dispatch int16, params ...interface{}) (result *VARIANT, err error) {
+	result, err = invoke(v, dispid, dispatch, params...)
+	return
+}
+
+func (v *IDispatch) GetTypeInfoCount() (c uint32, err error) {
+	c, err = getTypeInfoCount(v)
+	return
+}
+
+func (v *IDispatch) GetTypeInfo() (tinfo *ITypeInfo, err error) {
+	tinfo, err = getTypeInfo(v)
+	return
+}
+
+// GetSingleIDOfName is a helper that returns single display ID for IDispatch name.
+//
+// This replaces the common pattern of attempting to get a single name from the list of available
+// IDs. It gives the first ID, if it is available.
+func (v *IDispatch) GetSingleIDOfName(name string) (displayID int32, err error) {
+	var displayIDs []int32
+	displayIDs, err = v.GetIDsOfName([]string{name})
+	if err != nil {
+		return
+	}
+	displayID = displayIDs[0]
+	return
+}
+
+// InvokeWithOptionalArgs accepts arguments as an array, works like Invoke.
+//
+// Accepts name and will attempt to retrieve Display ID to pass to Invoke.
+//
+// Passing params as an array is a workaround that could be fixed in later versions of Go that
+// prevent passing empty params. During testing it was discovered that this is an acceptable way of
+// getting around not being able to pass params normally.
+func (v *IDispatch) InvokeWithOptionalArgs(name string, dispatch int16, params []interface{}) (result *VARIANT, err error) {
+	displayID, err := v.GetSingleIDOfName(name)
+	if err != nil {
+		return
+	}
+
+	if len(params) < 1 {
+		result, err = v.Invoke(displayID, dispatch)
+	} else {
+		result, err = v.Invoke(displayID, dispatch, params...)
+	}
+
+	return
+}
+
+// CallMethod invokes named function with arguments on object.
+func (v *IDispatch) CallMethod(name string, params ...interface{}) (*VARIANT, error) {
+	return v.InvokeWithOptionalArgs(name, DISPATCH_METHOD, params)
+}
+
+// GetProperty retrieves the property with the name with the ability to pass arguments.
+//
+// Most of the time you will not need to pass arguments as most objects do not allow for this
+// feature. Or at least, should not allow for this feature. Some servers don't follow best practices
+// and this is provided for those edge cases.
+func (v *IDispatch) GetProperty(name string, params ...interface{}) (*VARIANT, error) {
+	return v.InvokeWithOptionalArgs(name, DISPATCH_PROPERTYGET, params)
+}
+
+// PutProperty attempts to mutate a property in the object.
+func (v *IDispatch) PutProperty(name string, params ...interface{}) (*VARIANT, error) {
+	return v.InvokeWithOptionalArgs(name, DISPATCH_PROPERTYPUT, params)
+}

vendor/github.com/go-ole/go-ole/idispatch_func.go

@@ -0,0 +1,19 @@
+// +build !windows
+
+package ole
+
+func getIDsOfName(disp *IDispatch, names []string) ([]int32, error) {
+	return []int32{}, NewError(E_NOTIMPL)
+}
+
+func getTypeInfoCount(disp *IDispatch) (uint32, error) {
+	return uint32(0), NewError(E_NOTIMPL)
+}
+
+func getTypeInfo(disp *IDispatch) (*ITypeInfo, error) {
+	return nil, NewError(E_NOTIMPL)
+}
+
+func invoke(disp *IDispatch, dispid int32, dispatch int16, params ...interface{}) (*VARIANT, error) {
+	return nil, NewError(E_NOTIMPL)
+}

vendor/github.com/go-ole/go-ole/idispatch_windows.go

@@ -0,0 +1,200 @@
+// +build windows
+
+package ole
+
+import (
+	"math/big"
+	"syscall"
+	"time"
+	"unsafe"
+)
+
+func getIDsOfName(disp *IDispatch, names []string) (dispid []int32, err error) {
+	wnames := make([]*uint16, len(names))
+	for i := 0; i < len(names); i++ {
+		wnames[i] = syscall.StringToUTF16Ptr(names[i])
+	}
+	dispid = make([]int32, len(names))
+	namelen := uint32(len(names))
+	hr, _, _ := syscall.Syscall6(
+		disp.VTable().GetIDsOfNames,
+		6,
+		uintptr(unsafe.Pointer(disp)),
+		uintptr(unsafe.Pointer(IID_NULL)),
+		uintptr(unsafe.Pointer(&wnames[0])),
+		uintptr(namelen),
+		uintptr(GetUserDefaultLCID()),
+		uintptr(unsafe.Pointer(&dispid[0])))
+	if hr != 0 {
+		err = NewError(hr)
+	}
+	return
+}
+
+func getTypeInfoCount(disp *IDispatch) (c uint32, err error) {
+	hr, _, _ := syscall.Syscall(
+		disp.VTable().GetTypeInfoCount,
+		2,
+		uintptr(unsafe.Pointer(disp)),
+		uintptr(unsafe.Pointer(&c)),
+		0)
+	if hr != 0 {
+		err = NewError(hr)
+	}
+	return
+}
+
+func getTypeInfo(disp *IDispatch) (tinfo *ITypeInfo, err error) {
+	hr, _, _ := syscall.Syscall(
+		disp.VTable().GetTypeInfo,
+		3,
+		uintptr(unsafe.Pointer(disp)),
+		uintptr(GetUserDefaultLCID()),
+		uintptr(unsafe.Pointer(&tinfo)))
+	if hr != 0 {
+		err = NewError(hr)
+	}
+	return
+}
+
+func invoke(disp *IDispatch, dispid int32, dispatch int16, params ...interface{}) (result *VARIANT, err error) {
+	var dispparams DISPPARAMS
+
+	if dispatch&DISPATCH_PROPERTYPUT != 0 {
+		dispnames := [1]int32{DISPID_PROPERTYPUT}
+		dispparams.rgdispidNamedArgs = uintptr(unsafe.Pointer(&dispnames[0]))
+		dispparams.cNamedArgs = 1
+	} else if dispatch&DISPATCH_PROPERTYPUTREF != 0 {
+		dispnames := [1]int32{DISPID_PROPERTYPUT}
+		dispparams.rgdispidNamedArgs = uintptr(unsafe.Pointer(&dispnames[0]))
+		dispparams.cNamedArgs = 1
+	}
+	var vargs []VARIANT
+	if len(params) > 0 {
+		vargs = make([]VARIANT, len(params))
+		for i, v := range params {
+			//n := len(params)-i-1
+			n := len(params) - i - 1
+			VariantInit(&vargs[n])
+			switch vv := v.(type) {
+			case bool:
+				if vv {
+					vargs[n] = NewVariant(VT_BOOL, 0xffff)
+				} else {
+					vargs[n] = NewVariant(VT_BOOL, 0)
+				}
+			case *bool:
+				vargs[n] = NewVariant(VT_BOOL|VT_BYREF, int64(uintptr(unsafe.Pointer(v.(*bool)))))
+			case uint8:
+				vargs[n] = NewVariant(VT_I1, int64(v.(uint8)))
+			case *uint8:
+				vargs[n] = NewVariant(VT_I1|VT_BYREF, int64(uintptr(unsafe.Pointer(v.(*uint8)))))
+			case int8:
+				vargs[n] = NewVariant(VT_I1, int64(v.(int8)))
+			case *int8:
+				vargs[n] = NewVariant(VT_I1|VT_BYREF, int64(uintptr(unsafe.Pointer(v.(*uint8)))))
+			case int16:
+				vargs[n] = NewVariant(VT_I2, int64(v.(int16)))
+			case *int16:
+				vargs[n] = NewVariant(VT_I2|VT_BYREF, int64(uintptr(unsafe.Pointer(v.(*int16)))))
+			case uint16:
+				vargs[n] = NewVariant(VT_UI2, int64(v.(uint16)))
+			case *uint16:
+				vargs[n] = NewVariant(VT_UI2|VT_BYREF, int64(uintptr(unsafe.Pointer(v.(*uint16)))))
+			case int32:
+				vargs[n] = NewVariant(VT_I4, int64(v.(int32)))
+			case *int32:
+				vargs[n] = NewVariant(VT_I4|VT_BYREF, int64(uintptr(unsafe.Pointer(v.(*int32)))))
+			case uint32:
+				vargs[n] = NewVariant(VT_UI4, int64(v.(uint32)))
+			case *uint32:
+				vargs[n] = NewVariant(VT_UI4|VT_BYREF, int64(uintptr(unsafe.Pointer(v.(*uint32)))))
+			case int64:
+				vargs[n] = NewVariant(VT_I8, int64(v.(int64)))
+			case *int64:
+				vargs[n] = NewVariant(VT_I8|VT_BYREF, int64(uintptr(unsafe.Pointer(v.(*int64)))))
+			case uint64:
+				vargs[n] = NewVariant(VT_UI8, int64(uintptr(v.(uint64))))
+			case *uint64:
+				vargs[n] = NewVariant(VT_UI8|VT_BYREF, int64(uintptr(unsafe.Pointer(v.(*uint64)))))
+			case int:
+				vargs[n] = NewVariant(VT_I4, int64(v.(int)))
+			case *int:
+				vargs[n] = NewVariant(VT_I4|VT_BYREF, int64(uintptr(unsafe.Pointer(v.(*int)))))
+			case uint:
+				vargs[n] = NewVariant(VT_UI4, int64(v.(uint)))
+			case *uint:
+				vargs[n] = NewVariant(VT_UI4|VT_BYREF, int64(uintptr(unsafe.Pointer(v.(*uint)))))
+			case float32:
+				vargs[n] = NewVariant(VT_R4, *(*int64)(unsafe.Pointer(&vv)))
+			case *float32:
+				vargs[n] = NewVariant(VT_R4|VT_BYREF, int64(uintptr(unsafe.Pointer(v.(*float32)))))
+			case float64:
+				vargs[n] = NewVariant(VT_R8, *(*int64)(unsafe.Pointer(&vv)))
+			case *float64:
+				vargs[n] = NewVariant(VT_R8|VT_BYREF, int64(uintptr(unsafe.Pointer(v.(*float64)))))
+			case *big.Int:
+				vargs[n] = NewVariant(VT_DECIMAL, v.(*big.Int).Int64())
+			case string:
+				vargs[n] = NewVariant(VT_BSTR, int64(uintptr(unsafe.Pointer(SysAllocStringLen(v.(string))))))
+			case *string:
+				vargs[n] = NewVariant(VT_BSTR|VT_BYREF, int64(uintptr(unsafe.Pointer(v.(*string)))))
+			case time.Time:
+				s := vv.Format("2006-01-02 15:04:05")
+				vargs[n] = NewVariant(VT_BSTR, int64(uintptr(unsafe.Pointer(SysAllocStringLen(s)))))
+			case *time.Time:
+				s := vv.Format("2006-01-02 15:04:05")
+				vargs[n] = NewVariant(VT_BSTR|VT_BYREF, int64(uintptr(unsafe.Pointer(&s))))
+			case *IDispatch:
+				vargs[n] = NewVariant(VT_DISPATCH, int64(uintptr(unsafe.Pointer(v.(*IDispatch)))))
+			case **IDispatch:
+				vargs[n] = NewVariant(VT_DISPATCH|VT_BYREF, int64(uintptr(unsafe.Pointer(v.(**IDispatch)))))
+			case nil:
+				vargs[n] = NewVariant(VT_NULL, 0)
+			case *VARIANT:
+				vargs[n] = NewVariant(VT_VARIANT|VT_BYREF, int64(uintptr(unsafe.Pointer(v.(*VARIANT)))))
+			case []byte:
+				safeByteArray := safeArrayFromByteSlice(v.([]byte))
+				vargs[n] = NewVariant(VT_ARRAY|VT_UI1, int64(uintptr(unsafe.Pointer(safeByteArray))))
+				defer VariantClear(&vargs[n])
+			case []string:
+				safeByteArray := safeArrayFromStringSlice(v.([]string))
+				vargs[n] = NewVariant(VT_ARRAY|VT_BSTR, int64(uintptr(unsafe.Pointer(safeByteArray))))
+				defer VariantClear(&vargs[n])
+			default:
+				panic("unknown type")
+			}
+		}
+		dispparams.rgvarg = uintptr(unsafe.Pointer(&vargs[0]))
+		dispparams.cArgs = uint32(len(params))
+	}
+
+	result = new(VARIANT)
+	var excepInfo EXCEPINFO
+	VariantInit(result)
+	hr, _, _ := syscall.Syscall9(
+		disp.VTable().Invoke,
+		9,
+		uintptr(unsafe.Pointer(disp)),
+		uintptr(dispid),
+		uintptr(unsafe.Pointer(IID_NULL)),
+		uintptr(GetUserDefaultLCID()),
+		uintptr(dispatch),
+		uintptr(unsafe.Pointer(&dispparams)),
+		uintptr(unsafe.Pointer(result)),
+		uintptr(unsafe.Pointer(&excepInfo)),
+		0)
+	if hr != 0 {
+		err = NewErrorWithSubError(hr, BstrToString(excepInfo.bstrDescription), excepInfo)
+	}
+	for i, varg := range vargs {
+		n := len(params) - i - 1
+		if varg.VT == VT_BSTR && varg.Val != 0 {
+			SysFreeString(((*int16)(unsafe.Pointer(uintptr(varg.Val)))))
+		}
+		if varg.VT == (VT_BSTR|VT_BYREF) && varg.Val != 0 {
+			*(params[n].(*string)) = LpOleStrToString(*(**uint16)(unsafe.Pointer(uintptr(varg.Val))))
+		}
+	}
+	return
+}

vendor/github.com/go-ole/go-ole/idispatch_windows_test.go

@@ -0,0 +1,643 @@
+// +build windows
+
+package ole
+
+import "testing"
+
+func wrapCOMExecute(t *testing.T, callback func(*testing.T)) {
+	defer func() {
+		if r := recover(); r != nil {
+			t.Error(r)
+		}
+	}()
+
+	err := CoInitialize(0)
+	if err != nil {
+		t.Fatal(err)
+	}
+	defer CoUninitialize()
+
+	callback(t)
+}
+
+func wrapDispatch(t *testing.T, ClassID, UnknownInterfaceID, DispatchInterfaceID *GUID, callback func(*testing.T, *IUnknown, *IDispatch)) {
+	var unknown *IUnknown
+	var dispatch *IDispatch
+	var err error
+
+	unknown, err = CreateInstance(ClassID, UnknownInterfaceID)
+	if err != nil {
+		t.Error(err)
+		return
+	}
+	defer unknown.Release()
+
+	dispatch, err = unknown.QueryInterface(DispatchInterfaceID)
+	if err != nil {
+		t.Error(err)
+		return
+	}
+	defer dispatch.Release()
+
+	callback(t, unknown, dispatch)
+}
+
+func wrapGoOLETestCOMServerEcho(t *testing.T, callback func(*testing.T, *IUnknown, *IDispatch)) {
+	wrapCOMExecute(t, func(t *testing.T) {
+		wrapDispatch(t, CLSID_COMEchoTestObject, IID_IUnknown, IID_ICOMEchoTestObject, callback)
+	})
+}
+
+func wrapGoOLETestCOMServerScalar(t *testing.T, callback func(*testing.T, *IUnknown, *IDispatch)) {
+	wrapCOMExecute(t, func(t *testing.T) {
+		wrapDispatch(t, CLSID_COMTestScalarClass, IID_IUnknown, IID_ICOMTestTypes, callback)
+	})
+}
+
+func TestIDispatch_goolecomserver_stringfield(t *testing.T) {
+	wrapGoOLETestCOMServerScalar(t, func(t *testing.T, unknown *IUnknown, idispatch *IDispatch) {
+		method := "StringField"
+		expected := "Test String"
+		_, err := idispatch.PutProperty(method, expected)
+		if err != nil {
+			t.Error(err)
+			return
+		}
+		variant, err := idispatch.GetProperty(method)
+		if err != nil {
+			t.Error(err)
+			return
+		}
+		defer variant.Clear()
+		actual, passed := variant.Value().(string)
+		if !passed {
+			t.Errorf("%s() did not convert to %s, variant is %s with %v value", method, "string", variant.VT, variant.Val)
+			return
+		}
+		if actual != expected {
+			t.Errorf("%s() expected %v did not match %v", method, expected, actual)
+		}
+	})
+}
+
+func TestIDispatch_goolecomserver_int8field(t *testing.T) {
+	wrapGoOLETestCOMServerScalar(t, func(t *testing.T, unknown *IUnknown, idispatch *IDispatch) {
+		method := "Int8Field"
+		expected := int8(2)
+		_, err := idispatch.PutProperty(method, expected)
+		if err != nil {
+			t.Error(err)
+			return
+		}
+		variant, err := idispatch.GetProperty(method)
+		if err != nil {
+			t.Error(err)
+			return
+		}
+		defer variant.Clear()
+		actual, passed := variant.Value().(int8)
+		if !passed {
+			t.Errorf("%s() did not convert to %s, variant is %s with %v value", method, "int8", variant.VT, variant.Val)
+			return
+		}
+		if actual != expected {
+			t.Errorf("%s() expected %v did not match %v", method, expected, actual)
+		}
+	})
+}
+
+func TestIDispatch_goolecomserver_uint8field(t *testing.T) {
+	wrapGoOLETestCOMServerScalar(t, func(t *testing.T, unknown *IUnknown, idispatch *IDispatch) {
+		method := "UInt8Field"
+		expected := uint8(4)
+		_, err := idispatch.PutProperty(method, expected)
+		if err != nil {
+			t.Error(err)
+			return
+		}
+		variant, err := idispatch.GetProperty(method)
+		if err != nil {
+			t.Error(err)
+			return
+		}
+		defer variant.Clear()
+		actual, passed := variant.Value().(uint8)
+		if !passed {
+			t.Errorf("%s() did not convert to %s, variant is %s with %v value", method, "uint8", variant.VT, variant.Val)
+			return
+		}
+		if actual != expected {
+			t.Errorf("%s() expected %v did not match %v", method, expected, actual)
+		}
+	})
+}
+
+func TestIDispatch_goolecomserver_int16field(t *testing.T) {
+	wrapGoOLETestCOMServerScalar(t, func(t *testing.T, unknown *IUnknown, idispatch *IDispatch) {
+		method := "Int16Field"
+		expected := int16(4)
+		_, err := idispatch.PutProperty(method, expected)
+		if err != nil {
+			t.Error(err)
+			return
+		}
+		variant, err := idispatch.GetProperty(method)
+		if err != nil {
+			t.Error(err)
+			return
+		}
+		defer variant.Clear()
+		actual, passed := variant.Value().(int16)
+		if !passed {
+			t.Errorf("%s() did not convert to %s, variant is %s with %v value", method, "int16", variant.VT, variant.Val)
+			return
+		}
+		if actual != expected {
+			t.Errorf("%s() expected %v did not match %v", method, expected, actual)
+		}
+	})
+}
+
+func TestIDispatch_goolecomserver_uint16field(t *testing.T) {
+	wrapGoOLETestCOMServerScalar(t, func(t *testing.T, unknown *IUnknown, idispatch *IDispatch) {
+		method := "UInt16Field"
+		expected := uint16(4)
+		_, err := idispatch.PutProperty(method, expected)
+		if err != nil {
+			t.Error(err)
+			return
+		}
+		variant, err := idispatch.GetProperty(method)
+		if err != nil {
+			t.Error(err)
+			return
+		}
+		defer variant.Clear()
+		actual, passed := variant.Value().(uint16)
+		if !passed {
+			t.Errorf("%s() did not convert to %s, variant is %s with %v value", method, "uint16", variant.VT, variant.Val)
+			return
+		}
+		if actual != expected {
+			t.Errorf("%s() expected %v did not match %v", method, expected, actual)
+		}
+	})
+}
+
+func TestIDispatch_goolecomserver_int32field(t *testing.T) {
+	wrapGoOLETestCOMServerScalar(t, func(t *testing.T, unknown *IUnknown, idispatch *IDispatch) {
+		method := "Int32Field"
+		expected := int32(8)
+		_, err := idispatch.PutProperty(method, expected)
+		if err != nil {
+			t.Error(err)
+			return
+		}
+		variant, err := idispatch.GetProperty(method)
+		if err != nil {
+			t.Error(err)
+			return
+		}
+		defer variant.Clear()
+		actual, passed := variant.Value().(int32)
+		if !passed {
+			t.Errorf("%s() did not convert to %s, variant is %s with %v value", method, "int32", variant.VT, variant.Val)
+			return
+		}
+		if actual != expected {
+			t.Errorf("%s() expected %v did not match %v", method, expected, actual)
+		}
+	})
+}
+
+func TestIDispatch_goolecomserver_uint32field(t *testing.T) {
+	wrapGoOLETestCOMServerScalar(t, func(t *testing.T, unknown *IUnknown, idispatch *IDispatch) {
+		method := "UInt32Field"
+		expected := uint32(16)
+		_, err := idispatch.PutProperty(method, expected)
+		if err != nil {
+			t.Error(err)
+			return
+		}
+		variant, err := idispatch.GetProperty(method)
+		if err != nil {
+			t.Error(err)
+			return
+		}
+		defer variant.Clear()
+		actual, passed := variant.Value().(uint32)
+		if !passed {
+			t.Errorf("%s() did not convert to %s, variant is %s with %v value", method, "uint32", variant.VT, variant.Val)
+			return
+		}
+		if actual != expected {
+			t.Errorf("%s() expected %v did not match %v", method, expected, actual)
+		}
+	})
+}
+
+func TestIDispatch_goolecomserver_int64field(t *testing.T) {
+	wrapGoOLETestCOMServerScalar(t, func(t *testing.T, unknown *IUnknown, idispatch *IDispatch) {
+		method := "Int64Field"
+		expected := int64(32)
+		_, err := idispatch.PutProperty(method, expected)
+		if err != nil {
+			t.Error(err)
+			return
+		}
+		variant, err := idispatch.GetProperty(method)
+		if err != nil {
+			t.Error(err)
+			return
+		}
+		defer variant.Clear()
+		actual, passed := variant.Value().(int64)
+		if !passed {
+			t.Errorf("%s() did not convert to %s, variant is %s with %v value", method, "int64", variant.VT, variant.Val)
+			return
+		}
+		if actual != expected {
+			t.Errorf("%s() expected %v did not match %v", method, expected, actual)
+		}
+	})
+}
+
+func TestIDispatch_goolecomserver_uint64field(t *testing.T) {
+	wrapGoOLETestCOMServerScalar(t, func(t *testing.T, unknown *IUnknown, idispatch *IDispatch) {
+		method := "UInt64Field"
+		expected := uint64(64)
+		_, err := idispatch.PutProperty(method, expected)
+		if err != nil {
+			t.Error(err)
+			return
+		}
+		variant, err := idispatch.GetProperty(method)
+		if err != nil {
+			t.Error(err)
+			return
+		}
+		defer variant.Clear()
+		actual, passed := variant.Value().(uint64)
+		if !passed {
+			t.Errorf("%s() did not convert to %s, variant is %s with %v value", method, "uint64", variant.VT, variant.Val)
+			return
+		}
+		if actual != expected {
+			t.Errorf("%s() expected %v did not match %v", method, expected, actual)
+		}
+	})
+}
+
+func TestIDispatch_goolecomserver_booleanfield_true(t *testing.T) {
+	wrapGoOLETestCOMServerScalar(t, func(t *testing.T, unknown *IUnknown, idispatch *IDispatch) {
+		method := "BooleanField"
+		expected := true
+		_, err := idispatch.PutProperty(method, expected)
+		if err != nil {
+			t.Error(err)
+			return
+		}
+		variant, err := idispatch.GetProperty(method)
+		if err != nil {
+			t.Error(err)
+			return
+		}
+		defer variant.Clear()
+		actual, passed := variant.Value().(bool)
+		if !passed {
+			t.Errorf("%s() did not convert to %s, variant is %s with %v value", method, "bool", variant.VT, variant.Val)
+			return
+		}
+		if actual != expected {
+			t.Errorf("%s() expected %v did not match %v", method, expected, actual)
+		}
+	})
+}
+
+func TestIDispatch_goolecomserver_booleanfield_false(t *testing.T) {
+	wrapGoOLETestCOMServerScalar(t, func(t *testing.T, unknown *IUnknown, idispatch *IDispatch) {
+		method := "BooleanField"
+		expected := false
+		_, err := idispatch.PutProperty(method, expected)
+		if err != nil {
+			t.Error(err)
+			return
+		}
+		variant, err := idispatch.GetProperty(method)
+		if err != nil {
+			t.Error(err)
+			return
+		}
+		defer variant.Clear()
+		actual, passed := variant.Value().(bool)
+		if !passed {
+			t.Errorf("%s() did not convert to %s, variant is %s with %v value", method, "bool", variant.VT, variant.Val)
+			return
+		}
+		if actual != expected {
+			t.Errorf("%s() expected %v did not match %v", method, expected, actual)
+		}
+	})
+}
+
+func TestIDispatch_goolecomserver_float32field(t *testing.T) {
+	wrapGoOLETestCOMServerScalar(t, func(t *testing.T, unknown *IUnknown, idispatch *IDispatch) {
+		method := "Float32Field"
+		expected := float32(2.2)
+		_, err := idispatch.PutProperty(method, expected)
+		if err != nil {
+			t.Error(err)
+		}
+		variant, err := idispatch.GetProperty(method)
+		if err != nil {
+			t.Error(err)
+			return
+		}
+		defer variant.Clear()
+		actual, passed := variant.Value().(float32)
+		if !passed {
+			t.Errorf("%s() did not convert to %s, variant is %s with %v value", method, "float32", variant.VT, variant.Val)
+			return
+		}
+		if actual != expected {
+			t.Errorf("%s() expected %v did not match %v", method, expected, actual)
+		}
+	})
+}
+
+func TestIDispatch_goolecomserver_float64field(t *testing.T) {
+	wrapGoOLETestCOMServerScalar(t, func(t *testing.T, unknown *IUnknown, idispatch *IDispatch) {
+		method := "Float64Field"
+		expected := float64(4.4)
+		_, err := idispatch.PutProperty(method, expected)
+		if err != nil {
+			t.Error(err)
+		}
+		variant, err := idispatch.GetProperty(method)
+		if err != nil {
+			t.Error(err)
+			return
+		}
+		defer variant.Clear()
+		actual, passed := variant.Value().(float64)
+		if !passed {
+			t.Errorf("%s() did not convert to %s, variant is %s with %v value", method, "float64", variant.VT, variant.Val)
+			return
+		}
+		if actual != expected {
+			t.Errorf("%s() expected %v did not match %v", method, expected, actual)
+		}
+	})
+}
+
+func TestIDispatch_goolecomserver_echostring(t *testing.T) {
+	wrapGoOLETestCOMServerEcho(t, func(t *testing.T, unknown *IUnknown, idispatch *IDispatch) {
+		method := "EchoString"
+		expected := "Test String"
+		variant, err := idispatch.CallMethod(method, expected)
+		if err != nil {
+			t.Error(err)
+			return
+		}
+		defer variant.Clear()
+		actual, passed := variant.Value().(string)
+		if !passed {
+			t.Errorf("%s() did not convert to %s, variant is %s with %v value", method, "string", variant.VT, variant.Val)
+			return
+		}
+		if actual != expected {
+			t.Errorf("%s() expected %v did not match %v", method, expected, actual)
+		}
+	})
+}
+
+func TestIDispatch_goolecomserver_echoboolean(t *testing.T) {
+	wrapGoOLETestCOMServerEcho(t, func(t *testing.T, unknown *IUnknown, idispatch *IDispatch) {
+		method := "EchoBoolean"
+		expected := true
+		variant, err := idispatch.CallMethod(method, expected)
+		if err != nil {
+			t.Error(err)
+			return
+		}
+		defer variant.Clear()
+		actual, passed := variant.Value().(bool)
+		if !passed {
+			t.Errorf("%s() did not convert to %s, variant is %s with %v value", method, "bool", variant.VT, variant.Val)
+			return
+		}
+		if actual != expected {
+			t.Errorf("%s() expected %v did not match %v", method, expected, actual)
+		}
+	})
+}
+
+func TestIDispatch_goolecomserver_echoint8(t *testing.T) {
+	wrapGoOLETestCOMServerEcho(t, func(t *testing.T, unknown *IUnknown, idispatch *IDispatch) {
+		method := "EchoInt8"
+		expected := int8(1)
+		variant, err := idispatch.CallMethod(method, expected)
+		if err != nil {
+			t.Error(err)
+			return
+		}
+		defer variant.Clear()
+		actual, passed := variant.Value().(int8)
+		if !passed {
+			t.Errorf("%s() did not convert to %s, variant is %s with %v value", method, "int8", variant.VT, variant.Val)
+			return
+		}
+		if actual != expected {
+			t.Errorf("%s() expected %v did not match %v", method, expected, actual)
+		}
+	})
+}
+
+func TestIDispatch_goolecomserver_echouint8(t *testing.T) {
+	wrapGoOLETestCOMServerEcho(t, func(t *testing.T, unknown *IUnknown, idispatch *IDispatch) {
+		method := "EchoUInt8"
+		expected := uint8(1)
+		variant, err := idispatch.CallMethod(method, expected)
+		if err != nil {
+			t.Error(err)
+			return
+		}
+		defer variant.Clear()
+		actual, passed := variant.Value().(uint8)
+		if !passed {
+			t.Errorf("%s() did not convert to %s, variant is %s with %v value", method, "uint8", variant.VT, variant.Val)
+			return
+		}
+		if actual != expected {
+			t.Errorf("%s() expected %v did not match %v", method, expected, actual)
+		}
+	})
+}
+
+func TestIDispatch_goolecomserver_echoint16(t *testing.T) {
+	wrapGoOLETestCOMServerEcho(t, func(t *testing.T, unknown *IUnknown, idispatch *IDispatch) {
+		method := "EchoInt16"
+		expected := int16(1)
+		variant, err := idispatch.CallMethod(method, expected)
+		if err != nil {
+			t.Error(err)
+			return
+		}
+		defer variant.Clear()
+		actual, passed := variant.Value().(int16)
+		if !passed {
+			t.Errorf("%s() did not convert to %s, variant is %s with %v value", method, "int16", variant.VT, variant.Val)
+			return
+		}
+		if actual != expected {
+			t.Errorf("%s() expected %v did not match %v", method, expected, actual)
+		}
+	})
+}
+
+func TestIDispatch_goolecomserver_echouint16(t *testing.T) {
+	wrapGoOLETestCOMServerEcho(t, func(t *testing.T, unknown *IUnknown, idispatch *IDispatch) {
+		method := "EchoUInt16"
+		expected := uint16(1)
+		variant, err := idispatch.CallMethod(method, expected)
+		if err != nil {
+			t.Error(err)
+			return
+		}
+		defer variant.Clear()
+		actual, passed := variant.Value().(uint16)
+		if !passed {
+			t.Errorf("%s() did not convert to %s, variant is %s with %v value", method, "uint16", variant.VT, variant.Val)
+			return
+		}
+		if actual != expected {
+			t.Errorf("%s() expected %v did not match %v", method, expected, actual)
+		}
+	})
+}
+
+func TestIDispatch_goolecomserver_echoint32(t *testing.T) {
+	wrapGoOLETestCOMServerEcho(t, func(t *testing.T, unknown *IUnknown, idispatch *IDispatch) {
+		method := "EchoInt32"
+		expected := int32(2)
+		variant, err := idispatch.CallMethod(method, expected)
+		if err != nil {
+			t.Error(err)
+			return
+		}
+		defer variant.Clear()
+		actual, passed := variant.Value().(int32)
+		if !passed {
+			t.Errorf("%s() did not convert to %s, variant is %s with %v value", method, "int32", variant.VT, variant.Val)
+			return
+		}
+		if actual != expected {
+			t.Errorf("%s() expected %v did not match %v", method, expected, actual)
+		}
+	})
+}
+
+func TestIDispatch_goolecomserver_echouint32(t *testing.T) {
+	wrapGoOLETestCOMServerEcho(t, func(t *testing.T, unknown *IUnknown, idispatch *IDispatch) {
+		method := "EchoUInt32"
+		expected := uint32(4)
+		variant, err := idispatch.CallMethod(method, expected)
+		if err != nil {
+			t.Error(err)
+			return
+		}
+		defer variant.Clear()
+		actual, passed := variant.Value().(uint32)
+		if !passed {
+			t.Errorf("%s() did not convert to %s, variant is %s with %v value", method, "uint32", variant.VT, variant.Val)
+			return
+		}
+		if actual != expected {
+			t.Errorf("%s() expected %v did not match %v", method, expected, actual)
+		}
+	})
+}
+
+func TestIDispatch_goolecomserver_echoint64(t *testing.T) {
+	wrapGoOLETestCOMServerEcho(t, func(t *testing.T, unknown *IUnknown, idispatch *IDispatch) {
+		method := "EchoInt64"
+		expected := int64(1)
+		variant, err := idispatch.CallMethod(method, expected)
+		if err != nil {
+			t.Error(err)
+			return
+		}
+		defer variant.Clear()
+		actual, passed := variant.Value().(int64)
+		if !passed {
+			t.Errorf("%s() did not convert to %s, variant is %s with %v value", method, "int64", variant.VT, variant.Val)
+			return
+		}
+		if actual != expected {
+			t.Errorf("%s() expected %v did not match %v", method, expected, actual)
+		}
+	})
+}
+
+func TestIDispatch_goolecomserver_echouint64(t *testing.T) {
+	wrapGoOLETestCOMServerEcho(t, func(t *testing.T, unknown *IUnknown, idispatch *IDispatch) {
+		method := "EchoUInt64"
+		expected := uint64(1)
+		variant, err := idispatch.CallMethod(method, expected)
+		if err != nil {
+			t.Error(err)
+			return
+		}
+		defer variant.Clear()
+		actual, passed := variant.Value().(uint64)
+		if !passed {
+			t.Errorf("%s() did not convert to %s, variant is %s with %v value", method, "uint64", variant.VT, variant.Val)
+			return
+		}
+		if actual != expected {
+			t.Errorf("%s() expected %v did not match %v", method, expected, actual)
+		}
+	})
+}
+
+func TestIDispatch_goolecomserver_echofloat32(t *testing.T) {
+	wrapGoOLETestCOMServerEcho(t, func(t *testing.T, unknown *IUnknown, idispatch *IDispatch) {
+		method := "EchoFloat32"
+		expected := float32(2.2)
+		variant, err := idispatch.CallMethod(method, expected)
+		if err != nil {
+			t.Error(err)
+			return
+		}
+		defer variant.Clear()
+		actual, passed := variant.Value().(float32)
+		if !passed {
+			t.Errorf("%s() did not convert to %s, variant is %s with %v value", method, "float32", variant.VT, variant.Val)
+			return
+		}
+		if actual != expected {
+			t.Errorf("%s() expected %v did not match %v", method, expected, actual)
+		}
+	})
+}
+
+func TestIDispatch_goolecomserver_echofloat64(t *testing.T) {
+	wrapGoOLETestCOMServerEcho(t, func(t *testing.T, unknown *IUnknown, idispatch *IDispatch) {
+		method := "EchoFloat64"
+		expected := float64(2.2)
+		variant, err := idispatch.CallMethod(method, expected)
+		if err != nil {
+			t.Error(err)
+			return
+		}
+		defer variant.Clear()
+		actual, passed := variant.Value().(float64)
+		if !passed {
+			t.Errorf("%s() did not convert to %s, variant is %s with %v value", method, "float64", variant.VT, variant.Val)
+			return
+		}
+		if actual != expected {
+			t.Errorf("%s() expected %v did not match %v", method, expected, actual)
+		}
+	})
+}

vendor/github.com/go-ole/go-ole/ienumvariant.go

@@ -0,0 +1,19 @@
+package ole
+
+import "unsafe"
+
+type IEnumVARIANT struct {
+	IUnknown
+}
+
+type IEnumVARIANTVtbl struct {
+	IUnknownVtbl
+	Next  uintptr
+	Skip  uintptr
+	Reset uintptr
+	Clone uintptr
+}
+
+func (v *IEnumVARIANT) VTable() *IEnumVARIANTVtbl {
+	return (*IEnumVARIANTVtbl)(unsafe.Pointer(v.RawVTable))
+}

vendor/github.com/go-ole/go-ole/ienumvariant_func.go

@@ -0,0 +1,19 @@
+// +build !windows
+
+package ole
+
+func (enum *IEnumVARIANT) Clone() (*IEnumVARIANT, error) {
+	return nil, NewError(E_NOTIMPL)
+}
+
+func (enum *IEnumVARIANT) Reset() error {
+	return NewError(E_NOTIMPL)
+}
+
+func (enum *IEnumVARIANT) Skip(celt uint) error {
+	return NewError(E_NOTIMPL)
+}
+
+func (enum *IEnumVARIANT) Next(celt uint) (VARIANT, uint, error) {
+	return NewVariant(VT_NULL, int64(0)), 0, NewError(E_NOTIMPL)
+}

vendor/github.com/go-ole/go-ole/ienumvariant_test.go

@@ -0,0 +1,101 @@
+// +build windows
+
+package ole
+
+import "testing"
+
+func TestIEnumVariant_wmi(t *testing.T) {
+	var err error
+	var classID *GUID
+
+	IID_ISWbemLocator := &GUID{0x76a6415b, 0xcb41, 0x11d1, [8]byte{0x8b, 0x02, 0x00, 0x60, 0x08, 0x06, 0xd9, 0xb6}}
+
+	err = CoInitialize(0)
+	if err != nil {
+		t.Errorf("Initialize error: %v", err)
+	}
+	defer CoUninitialize()
+
+	classID, err = ClassIDFrom("WbemScripting.SWbemLocator")
+	if err != nil {
+		t.Errorf("CreateObject WbemScripting.SWbemLocator returned with %v", err)
+	}
+
+	comserver, err := CreateInstance(classID, IID_IUnknown)
+	if err != nil {
+		t.Errorf("CreateInstance WbemScripting.SWbemLocator returned with %v", err)
+	}
+	if comserver == nil {
+		t.Error("CreateObject WbemScripting.SWbemLocator not an object")
+	}
+	defer comserver.Release()
+
+	dispatch, err := comserver.QueryInterface(IID_ISWbemLocator)
+	if err != nil {
+		t.Errorf("context.iunknown.QueryInterface returned with %v", err)
+	}
+	defer dispatch.Release()
+
+	wbemServices, err := dispatch.CallMethod("ConnectServer")
+	if err != nil {
+		t.Errorf("ConnectServer failed with %v", err)
+	}
+	defer wbemServices.Clear()
+
+	objectset, err := wbemServices.ToIDispatch().CallMethod("ExecQuery", "SELECT * FROM WIN32_Process")
+	if err != nil {
+		t.Errorf("ExecQuery failed with %v", err)
+	}
+	defer objectset.Clear()
+
+	enum_property, err := objectset.ToIDispatch().GetProperty("_NewEnum")
+	if err != nil {
+		t.Errorf("Get _NewEnum property failed with %v", err)
+	}
+	defer enum_property.Clear()
+
+	enum, err := enum_property.ToIUnknown().IEnumVARIANT(IID_IEnumVariant)
+	if err != nil {
+		t.Errorf("IEnumVARIANT() returned with %v", err)
+	}
+	if enum == nil {
+		t.Error("Enum is nil")
+		t.FailNow()
+	}
+	defer enum.Release()
+
+	for tmp, length, err := enum.Next(1); length > 0; tmp, length, err = enum.Next(1) {
+		if err != nil {
+			t.Errorf("Next() returned with %v", err)
+		}
+		tmp_dispatch := tmp.ToIDispatch()
+		defer tmp_dispatch.Release()
+
+		props, err := tmp_dispatch.GetProperty("Properties_")
+		if err != nil {
+			t.Errorf("Get Properties_ property failed with %v", err)
+		}
+		defer props.Clear()
+
+		props_enum_property, err := props.ToIDispatch().GetProperty("_NewEnum")
+		if err != nil {
+			t.Errorf("Get _NewEnum property failed with %v", err)
+		}
+		defer props_enum_property.Clear()
+
+		props_enum, err := props_enum_property.ToIUnknown().IEnumVARIANT(IID_IEnumVariant)
+		if err != nil {
+			t.Errorf("IEnumVARIANT failed with %v", err)
+		}
+		defer props_enum.Release()
+
+		class_variant, err := tmp_dispatch.GetProperty("Name")
+		if err != nil {
+			t.Errorf("Get Name property failed with %v", err)
+		}
+		defer class_variant.Clear()
+
+		class_name := class_variant.ToString()
+		t.Logf("Got %v", class_name)
+	}
+}

vendor/github.com/go-ole/go-ole/ienumvariant_windows.go

@@ -0,0 +1,63 @@
+// +build windows
+
+package ole
+
+import (
+	"syscall"
+	"unsafe"
+)
+
+func (enum *IEnumVARIANT) Clone() (cloned *IEnumVARIANT, err error) {
+	hr, _, _ := syscall.Syscall(
+		enum.VTable().Clone,
+		2,
+		uintptr(unsafe.Pointer(enum)),
+		uintptr(unsafe.Pointer(&cloned)),
+		0)
+	if hr != 0 {
+		err = NewError(hr)
+	}
+	return
+}
+
+func (enum *IEnumVARIANT) Reset() (err error) {
+	hr, _, _ := syscall.Syscall(
+		enum.VTable().Reset,
+		1,
+		uintptr(unsafe.Pointer(enum)),
+		0,
+		0)
+	if hr != 0 {
+		err = NewError(hr)
+	}
+	return
+}
+
+func (enum *IEnumVARIANT) Skip(celt uint) (err error) {
+	hr, _, _ := syscall.Syscall(
+		enum.VTable().Skip,
+		2,
+		uintptr(unsafe.Pointer(enum)),
+		uintptr(celt),
+		0)
+	if hr != 0 {
+		err = NewError(hr)
+	}
+	return
+}
+
+func (enum *IEnumVARIANT) Next(celt uint) (array VARIANT, length uint, err error) {
+	hr, _, _ := syscall.Syscall6(
+		enum.VTable().Next,
+		4,
+		uintptr(unsafe.Pointer(enum)),
+		uintptr(celt),
+		uintptr(unsafe.Pointer(&array)),
+		uintptr(unsafe.Pointer(&length)),
+		0,
+		0)
+	if hr != 0 {
+		err = NewError(hr)
+	}
+	return
+}

vendor/github.com/go-ole/go-ole/iinspectable.go

@@ -0,0 +1,18 @@
+package ole
+
+import "unsafe"
+
+type IInspectable struct {
+	IUnknown
+}
+
+type IInspectableVtbl struct {
+	IUnknownVtbl
+	GetIIds             uintptr
+	GetRuntimeClassName uintptr
+	GetTrustLevel       uintptr
+}
+
+func (v *IInspectable) VTable() *IInspectableVtbl {
+	return (*IInspectableVtbl)(unsafe.Pointer(v.RawVTable))
+}

vendor/github.com/go-ole/go-ole/iinspectable_func.go

@@ -0,0 +1,15 @@
+// +build !windows
+
+package ole
+
+func (v *IInspectable) GetIids() ([]*GUID, error) {
+	return []*GUID{}, NewError(E_NOTIMPL)
+}
+
+func (v *IInspectable) GetRuntimeClassName() (string, error) {
+	return "", NewError(E_NOTIMPL)
+}
+
+func (v *IInspectable) GetTrustLevel() (uint32, error) {
+	return uint32(0), NewError(E_NOTIMPL)
+}

vendor/github.com/go-ole/go-ole/iinspectable_windows.go

@@ -0,0 +1,72 @@
+// +build windows
+
+package ole
+
+import (
+	"bytes"
+	"encoding/binary"
+	"reflect"
+	"syscall"
+	"unsafe"
+)
+
+func (v *IInspectable) GetIids() (iids []*GUID, err error) {
+	var count uint32
+	var array uintptr
+	hr, _, _ := syscall.Syscall(
+		v.VTable().GetIIds,
+		3,
+		uintptr(unsafe.Pointer(v)),
+		uintptr(unsafe.Pointer(&count)),
+		uintptr(unsafe.Pointer(&array)))
+	if hr != 0 {
+		err = NewError(hr)
+		return
+	}
+	defer CoTaskMemFree(array)
+
+	iids = make([]*GUID, count)
+	byteCount := count * uint32(unsafe.Sizeof(GUID{}))
+	slicehdr := reflect.SliceHeader{Data: array, Len: int(byteCount), Cap: int(byteCount)}
+	byteSlice := *(*[]byte)(unsafe.Pointer(&slicehdr))
+	reader := bytes.NewReader(byteSlice)
+	for i := range iids {
+		guid := GUID{}
+		err = binary.Read(reader, binary.LittleEndian, &guid)
+		if err != nil {
+			return
+		}
+		iids[i] = &guid
+	}
+	return
+}
+
+func (v *IInspectable) GetRuntimeClassName() (s string, err error) {
+	var hstring HString
+	hr, _, _ := syscall.Syscall(
+		v.VTable().GetRuntimeClassName,
+		2,
+		uintptr(unsafe.Pointer(v)),
+		uintptr(unsafe.Pointer(&hstring)),
+		0)
+	if hr != 0 {
+		err = NewError(hr)
+		return
+	}
+	s = hstring.String()
+	DeleteHString(hstring)
+	return
+}
+
+func (v *IInspectable) GetTrustLevel() (level uint32, err error) {
+	hr, _, _ := syscall.Syscall(
+		v.VTable().GetTrustLevel,
+		2,
+		uintptr(unsafe.Pointer(v)),
+		uintptr(unsafe.Pointer(&level)),
+		0)
+	if hr != 0 {
+		err = NewError(hr)
+	}
+	return
+}

vendor/github.com/go-ole/go-ole/iprovideclassinfo.go

@@ -0,0 +1,21 @@
+package ole
+
+import "unsafe"
+
+type IProvideClassInfo struct {
+	IUnknown
+}
+
+type IProvideClassInfoVtbl struct {
+	IUnknownVtbl
+	GetClassInfo uintptr
+}
+
+func (v *IProvideClassInfo) VTable() *IProvideClassInfoVtbl {
+	return (*IProvideClassInfoVtbl)(unsafe.Pointer(v.RawVTable))
+}
+
+func (v *IProvideClassInfo) GetClassInfo() (cinfo *ITypeInfo, err error) {
+	cinfo, err = getClassInfo(v)
+	return
+}

vendor/github.com/go-ole/go-ole/iprovideclassinfo_func.go

@@ -0,0 +1,7 @@
+// +build !windows
+
+package ole
+
+func getClassInfo(disp *IProvideClassInfo) (tinfo *ITypeInfo, err error) {
+	return nil, NewError(E_NOTIMPL)
+}

vendor/github.com/go-ole/go-ole/iprovideclassinfo_windows.go

@@ -0,0 +1,21 @@
+// +build windows
+
+package ole
+
+import (
+	"syscall"
+	"unsafe"
+)
+
+func getClassInfo(disp *IProvideClassInfo) (tinfo *ITypeInfo, err error) {
+	hr, _, _ := syscall.Syscall(
+		disp.VTable().GetClassInfo,
+		2,
+		uintptr(unsafe.Pointer(disp)),
+		uintptr(unsafe.Pointer(&tinfo)),
+		0)
+	if hr != 0 {
+		err = NewError(hr)
+	}
+	return
+}

vendor/github.com/go-ole/go-ole/itypeinfo.go

@@ -0,0 +1,34 @@
+package ole
+
+import "unsafe"
+
+type ITypeInfo struct {
+	IUnknown
+}
+
+type ITypeInfoVtbl struct {
+	IUnknownVtbl
+	GetTypeAttr          uintptr
+	GetTypeComp          uintptr
+	GetFuncDesc          uintptr
+	GetVarDesc           uintptr
+	GetNames             uintptr
+	GetRefTypeOfImplType uintptr
+	GetImplTypeFlags     uintptr
+	GetIDsOfNames        uintptr
+	Invoke               uintptr
+	GetDocumentation     uintptr
+	GetDllEntry          uintptr
+	GetRefTypeInfo       uintptr
+	AddressOfMember      uintptr
+	CreateInstance       uintptr
+	GetMops              uintptr
+	GetContainingTypeLib uintptr
+	ReleaseTypeAttr      uintptr
+	ReleaseFuncDesc      uintptr
+	ReleaseVarDesc       uintptr
+}
+
+func (v *ITypeInfo) VTable() *ITypeInfoVtbl {
+	return (*ITypeInfoVtbl)(unsafe.Pointer(v.RawVTable))
+}

vendor/github.com/go-ole/go-ole/itypeinfo_func.go

@@ -0,0 +1,7 @@
+// +build !windows
+
+package ole
+
+func (v *ITypeInfo) GetTypeAttr() (*TYPEATTR, error) {
+	return nil, NewError(E_NOTIMPL)
+}

vendor/github.com/go-ole/go-ole/itypeinfo_windows.go

@@ -0,0 +1,21 @@
+// +build windows
+
+package ole
+
+import (
+	"syscall"
+	"unsafe"
+)
+
+func (v *ITypeInfo) GetTypeAttr() (tattr *TYPEATTR, err error) {
+	hr, _, _ := syscall.Syscall(
+		uintptr(v.VTable().GetTypeAttr),
+		2,
+		uintptr(unsafe.Pointer(v)),
+		uintptr(unsafe.Pointer(&tattr)),
+		0)
+	if hr != 0 {
+		err = NewError(hr)
+	}
+	return
+}

vendor/github.com/go-ole/go-ole/iunknown.go

@@ -0,0 +1,57 @@
+package ole
+
+import "unsafe"
+
+type IUnknown struct {
+	RawVTable *interface{}
+}
+
+type IUnknownVtbl struct {
+	QueryInterface uintptr
+	AddRef         uintptr
+	Release        uintptr
+}
+
+type UnknownLike interface {
+	QueryInterface(iid *GUID) (disp *IDispatch, err error)
+	AddRef() int32
+	Release() int32
+}
+
+func (v *IUnknown) VTable() *IUnknownVtbl {
+	return (*IUnknownVtbl)(unsafe.Pointer(v.RawVTable))
+}
+
+func (v *IUnknown) PutQueryInterface(interfaceID *GUID, obj interface{}) error {
+	return reflectQueryInterface(v, v.VTable().QueryInterface, interfaceID, obj)
+}
+
+func (v *IUnknown) IDispatch(interfaceID *GUID) (dispatch *IDispatch, err error) {
+	err = v.PutQueryInterface(interfaceID, &dispatch)
+	return
+}
+
+func (v *IUnknown) IEnumVARIANT(interfaceID *GUID) (enum *IEnumVARIANT, err error) {
+	err = v.PutQueryInterface(interfaceID, &enum)
+	return
+}
+
+func (v *IUnknown) QueryInterface(iid *GUID) (*IDispatch, error) {
+	return queryInterface(v, iid)
+}
+
+func (v *IUnknown) MustQueryInterface(iid *GUID) (disp *IDispatch) {
+	unk, err := queryInterface(v, iid)
+	if err != nil {
+		panic(err)
+	}
+	return unk
+}
+
+func (v *IUnknown) AddRef() int32 {
+	return addRef(v)
+}
+
+func (v *IUnknown) Release() int32 {
+	return release(v)
+}

vendor/github.com/go-ole/go-ole/iunknown_func.go

@@ -0,0 +1,19 @@
+// +build !windows
+
+package ole
+
+func reflectQueryInterface(self interface{}, method uintptr, interfaceID *GUID, obj interface{}) (err error) {
+	return NewError(E_NOTIMPL)
+}
+
+func queryInterface(unk *IUnknown, iid *GUID) (disp *IDispatch, err error) {
+	return nil, NewError(E_NOTIMPL)
+}
+
+func addRef(unk *IUnknown) int32 {
+	return 0
+}
+
+func release(unk *IUnknown) int32 {
+	return 0
+}

vendor/github.com/go-ole/go-ole/iunknown_windows.go

@@ -0,0 +1,58 @@
+// +build windows
+
+package ole
+
+import (
+	"reflect"
+	"syscall"
+	"unsafe"
+)
+
+func reflectQueryInterface(self interface{}, method uintptr, interfaceID *GUID, obj interface{}) (err error) {
+	selfValue := reflect.ValueOf(self).Elem()
+	objValue := reflect.ValueOf(obj).Elem()
+
+	hr, _, _ := syscall.Syscall(
+		method,
+		3,
+		selfValue.UnsafeAddr(),
+		uintptr(unsafe.Pointer(interfaceID)),
+		objValue.Addr().Pointer())
+	if hr != 0 {
+		err = NewError(hr)
+	}
+	return
+}
+
+func queryInterface(unk *IUnknown, iid *GUID) (disp *IDispatch, err error) {
+	hr, _, _ := syscall.Syscall(
+		unk.VTable().QueryInterface,
+		3,
+		uintptr(unsafe.Pointer(unk)),
+		uintptr(unsafe.Pointer(iid)),
+		uintptr(unsafe.Pointer(&disp)))
+	if hr != 0 {
+		err = NewError(hr)
+	}
+	return
+}
+
+func addRef(unk *IUnknown) int32 {
+	ret, _, _ := syscall.Syscall(
+		unk.VTable().AddRef,
+		1,
+		uintptr(unsafe.Pointer(unk)),
+		0,
+		0)
+	return int32(ret)
+}
+
+func release(unk *IUnknown) int32 {
+	ret, _, _ := syscall.Syscall(
+		unk.VTable().Release,
+		1,
+		uintptr(unsafe.Pointer(unk)),
+		0,
+		0)
+	return int32(ret)
+}

vendor/github.com/go-ole/go-ole/iunknown_windows_test.go

@@ -0,0 +1,32 @@
+// +build windows
+
+package ole
+
+import "testing"
+
+func TestIUnknown(t *testing.T) {
+	defer func() {
+		if r := recover(); r != nil {
+			t.Error(r)
+		}
+	}()
+
+	var err error
+
+	err = CoInitialize(0)
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	defer CoUninitialize()
+
+	var unknown *IUnknown
+
+	// oleutil.CreateObject()
+	unknown, err = CreateInstance(CLSID_COMEchoTestObject, IID_IUnknown)
+	if err != nil {
+		t.Fatal(err)
+		return
+	}
+	unknown.Release()
+}

vendor/github.com/go-ole/go-ole/ole.go

@@ -0,0 +1,157 @@
+package ole
+
+import (
+	"fmt"
+	"strings"
+)
+
+// DISPPARAMS are the arguments that passed to methods or property.
+type DISPPARAMS struct {
+	rgvarg            uintptr
+	rgdispidNamedArgs uintptr
+	cArgs             uint32
+	cNamedArgs        uint32
+}
+
+// EXCEPINFO defines exception info.
+type EXCEPINFO struct {
+	wCode             uint16
+	wReserved         uint16
+	bstrSource        *uint16
+	bstrDescription   *uint16
+	bstrHelpFile      *uint16
+	dwHelpContext     uint32
+	pvReserved        uintptr
+	pfnDeferredFillIn uintptr
+	scode             uint32
+}
+
+// WCode return wCode in EXCEPINFO.
+func (e EXCEPINFO) WCode() uint16 {
+	return e.wCode
+}
+
+// SCODE return scode in EXCEPINFO.
+func (e EXCEPINFO) SCODE() uint32 {
+	return e.scode
+}
+
+// String convert EXCEPINFO to string.
+func (e EXCEPINFO) String() string {
+	var src, desc, hlp string
+	if e.bstrSource == nil {
+		src = "<nil>"
+	} else {
+		src = BstrToString(e.bstrSource)
+	}
+
+	if e.bstrDescription == nil {
+		desc = "<nil>"
+	} else {
+		desc = BstrToString(e.bstrDescription)
+	}
+
+	if e.bstrHelpFile == nil {
+		hlp = "<nil>"
+	} else {
+		hlp = BstrToString(e.bstrHelpFile)
+	}
+
+	return fmt.Sprintf(
+		"wCode: %#x, bstrSource: %v, bstrDescription: %v, bstrHelpFile: %v, dwHelpContext: %#x, scode: %#x",
+		e.wCode, src, desc, hlp, e.dwHelpContext, e.scode,
+	)
+}
+
+// Error implements error interface and returns error string.
+func (e EXCEPINFO) Error() string {
+	if e.bstrDescription != nil {
+		return strings.TrimSpace(BstrToString(e.bstrDescription))
+	}
+
+	src := "Unknown"
+	if e.bstrSource != nil {
+		src = BstrToString(e.bstrSource)
+	}
+
+	code := e.scode
+	if e.wCode != 0 {
+		code = uint32(e.wCode)
+	}
+
+	return fmt.Sprintf("%v: %#x", src, code)
+}
+
+// PARAMDATA defines parameter data type.
+type PARAMDATA struct {
+	Name *int16
+	Vt   uint16
+}
+
+// METHODDATA defines method info.
+type METHODDATA struct {
+	Name     *uint16
+	Data     *PARAMDATA
+	Dispid   int32
+	Meth     uint32
+	CC       int32
+	CArgs    uint32
+	Flags    uint16
+	VtReturn uint32
+}
+
+// INTERFACEDATA defines interface info.
+type INTERFACEDATA struct {
+	MethodData *METHODDATA
+	CMembers   uint32
+}
+
+// Point is 2D vector type.
+type Point struct {
+	X int32
+	Y int32
+}
+
+// Msg is message between processes.
+type Msg struct {
+	Hwnd    uint32
+	Message uint32
+	Wparam  int32
+	Lparam  int32
+	Time    uint32
+	Pt      Point
+}
+
+// TYPEDESC defines data type.
+type TYPEDESC struct {
+	Hreftype uint32
+	VT       uint16
+}
+
+// IDLDESC defines IDL info.
+type IDLDESC struct {
+	DwReserved uint32
+	WIDLFlags  uint16
+}
+
+// TYPEATTR defines type info.
+type TYPEATTR struct {
+	Guid             GUID
+	Lcid             uint32
+	dwReserved       uint32
+	MemidConstructor int32
+	MemidDestructor  int32
+	LpstrSchema      *uint16
+	CbSizeInstance   uint32
+	Typekind         int32
+	CFuncs           uint16
+	CVars            uint16
+	CImplTypes       uint16
+	CbSizeVft        uint16
+	CbAlignment      uint16
+	WTypeFlags       uint16
+	WMajorVerNum     uint16
+	WMinorVerNum     uint16
+	TdescAlias       TYPEDESC
+	IdldescType      IDLDESC
+}

vendor/github.com/go-ole/go-ole/oleutil/connection.go

@@ -0,0 +1,100 @@
+// +build windows
+
+package oleutil
+
+import (
+	"reflect"
+	"unsafe"
+
+	ole "github.com/go-ole/go-ole"
+)
+
+type stdDispatch struct {
+	lpVtbl  *stdDispatchVtbl
+	ref     int32
+	iid     *ole.GUID
+	iface   interface{}
+	funcMap map[string]int32
+}
+
+type stdDispatchVtbl struct {
+	pQueryInterface   uintptr
+	pAddRef           uintptr
+	pRelease          uintptr
+	pGetTypeInfoCount uintptr
+	pGetTypeInfo      uintptr
+	pGetIDsOfNames    uintptr
+	pInvoke           uintptr
+}
+
+func dispQueryInterface(this *ole.IUnknown, iid *ole.GUID, punk **ole.IUnknown) uint32 {
+	pthis := (*stdDispatch)(unsafe.Pointer(this))
+	*punk = nil
+	if ole.IsEqualGUID(iid, ole.IID_IUnknown) ||
+		ole.IsEqualGUID(iid, ole.IID_IDispatch) {
+		dispAddRef(this)
+		*punk = this
+		return ole.S_OK
+	}
+	if ole.IsEqualGUID(iid, pthis.iid) {
+		dispAddRef(this)
+		*punk = this
+		return ole.S_OK
+	}
+	return ole.E_NOINTERFACE
+}
+
+func dispAddRef(this *ole.IUnknown) int32 {
+	pthis := (*stdDispatch)(unsafe.Pointer(this))
+	pthis.ref++
+	return pthis.ref
+}
+
+func dispRelease(this *ole.IUnknown) int32 {
+	pthis := (*stdDispatch)(unsafe.Pointer(this))
+	pthis.ref--
+	return pthis.ref
+}
+
+func dispGetIDsOfNames(this *ole.IUnknown, iid *ole.GUID, wnames []*uint16, namelen int, lcid int, pdisp []int32) uintptr {
+	pthis := (*stdDispatch)(unsafe.Pointer(this))
+	names := make([]string, len(wnames))
+	for i := 0; i < len(names); i++ {
+		names[i] = ole.LpOleStrToString(wnames[i])
+	}
+	for n := 0; n < namelen; n++ {
+		if id, ok := pthis.funcMap[names[n]]; ok {
+			pdisp[n] = id
+		}
+	}
+	return ole.S_OK
+}
+
+func dispGetTypeInfoCount(pcount *int) uintptr {
+	if pcount != nil {
+		*pcount = 0
+	}
+	return ole.S_OK
+}
+
+func dispGetTypeInfo(ptypeif *uintptr) uintptr {
+	return ole.E_NOTIMPL
+}
+
+func dispInvoke(this *ole.IDispatch, dispid int32, riid *ole.GUID, lcid int, flags int16, dispparams *ole.DISPPARAMS, result *ole.VARIANT, pexcepinfo *ole.EXCEPINFO, nerr *uint) uintptr {
+	pthis := (*stdDispatch)(unsafe.Pointer(this))
+	found := ""
+	for name, id := range pthis.funcMap {
+		if id == dispid {
+			found = name
+		}
+	}
+	if found != "" {
+		rv := reflect.ValueOf(pthis.iface).Elem()
+		rm := rv.MethodByName(found)
+		rr := rm.Call([]reflect.Value{})
+		println(len(rr))
+		return ole.S_OK
+	}
+	return ole.E_NOTIMPL
+}

vendor/github.com/go-ole/go-ole/oleutil/connection_func.go

@@ -0,0 +1,10 @@
+// +build !windows
+
+package oleutil
+
+import ole "github.com/go-ole/go-ole"
+
+// ConnectObject creates a connection point between two services for communication.
+func ConnectObject(disp *ole.IDispatch, iid *ole.GUID, idisp interface{}) (uint32, error) {
+	return 0, ole.NewError(ole.E_NOTIMPL)
+}

vendor/github.com/go-ole/go-ole/oleutil/connection_windows.go

@@ -0,0 +1,58 @@
+// +build windows
+
+package oleutil
+
+import (
+	"reflect"
+	"syscall"
+	"unsafe"
+
+	ole "github.com/go-ole/go-ole"
+)
+
+// ConnectObject creates a connection point between two services for communication.
+func ConnectObject(disp *ole.IDispatch, iid *ole.GUID, idisp interface{}) (cookie uint32, err error) {
+	unknown, err := disp.QueryInterface(ole.IID_IConnectionPointContainer)
+	if err != nil {
+		return
+	}
+
+	container := (*ole.IConnectionPointContainer)(unsafe.Pointer(unknown))
+	var point *ole.IConnectionPoint
+	err = container.FindConnectionPoint(iid, &point)
+	if err != nil {
+		return
+	}
+	if edisp, ok := idisp.(*ole.IUnknown); ok {
+		cookie, err = point.Advise(edisp)
+		container.Release()
+		if err != nil {
+			return
+		}
+	}
+	rv := reflect.ValueOf(disp).Elem()
+	if rv.Type().Kind() == reflect.Struct {
+		dest := &stdDispatch{}
+		dest.lpVtbl = &stdDispatchVtbl{}
+		dest.lpVtbl.pQueryInterface = syscall.NewCallback(dispQueryInterface)
+		dest.lpVtbl.pAddRef = syscall.NewCallback(dispAddRef)
+		dest.lpVtbl.pRelease = syscall.NewCallback(dispRelease)
+		dest.lpVtbl.pGetTypeInfoCount = syscall.NewCallback(dispGetTypeInfoCount)
+		dest.lpVtbl.pGetTypeInfo = syscall.NewCallback(dispGetTypeInfo)
+		dest.lpVtbl.pGetIDsOfNames = syscall.NewCallback(dispGetIDsOfNames)
+		dest.lpVtbl.pInvoke = syscall.NewCallback(dispInvoke)
+		dest.iface = disp
+		dest.iid = iid
+		cookie, err = point.Advise((*ole.IUnknown)(unsafe.Pointer(dest)))
+		container.Release()
+		if err != nil {
+			point.Release()
+			return
+		}
+		return
+	}
+
+	container.Release()
+
+	return 0, ole.NewError(ole.E_INVALIDARG)
+}

vendor/github.com/go-ole/go-ole/oleutil/go-get.go

@@ -0,0 +1,6 @@
+// This file is here so go get succeeds as without it errors with:
+// no buildable Go source files in ...
+//
+// +build !windows
+
+package oleutil

vendor/github.com/go-ole/go-ole/oleutil/oleutil.go

@@ -0,0 +1,127 @@
+package oleutil
+
+import ole "github.com/go-ole/go-ole"
+
+// ClassIDFrom retrieves class ID whether given is program ID or application string.
+func ClassIDFrom(programID string) (classID *ole.GUID, err error) {
+	return ole.ClassIDFrom(programID)
+}
+
+// CreateObject creates object from programID based on interface type.
+//
+// Only supports IUnknown.
+//
+// Program ID can be either program ID or application string.
+func CreateObject(programID string) (unknown *ole.IUnknown, err error) {
+	classID, err := ole.ClassIDFrom(programID)
+	if err != nil {
+		return
+	}
+
+	unknown, err = ole.CreateInstance(classID, ole.IID_IUnknown)
+	if err != nil {
+		return
+	}
+
+	return
+}
+
+// GetActiveObject retrieves active object for program ID and interface ID based
+// on interface type.
+//
+// Only supports IUnknown.
+//
+// Program ID can be either program ID or application string.
+func GetActiveObject(programID string) (unknown *ole.IUnknown, err error) {
+	classID, err := ole.ClassIDFrom(programID)
+	if err != nil {
+		return
+	}
+
+	unknown, err = ole.GetActiveObject(classID, ole.IID_IUnknown)
+	if err != nil {
+		return
+	}
+
+	return
+}
+
+// CallMethod calls method on IDispatch with parameters.
+func CallMethod(disp *ole.IDispatch, name string, params ...interface{}) (result *ole.VARIANT, err error) {
+	return disp.InvokeWithOptionalArgs(name, ole.DISPATCH_METHOD, params)
+}
+
+// MustCallMethod calls method on IDispatch with parameters or panics.
+func MustCallMethod(disp *ole.IDispatch, name string, params ...interface{}) (result *ole.VARIANT) {
+	r, err := CallMethod(disp, name, params...)
+	if err != nil {
+		panic(err.Error())
+	}
+	return r
+}
+
+// GetProperty retrieves property from IDispatch.
+func GetProperty(disp *ole.IDispatch, name string, params ...interface{}) (result *ole.VARIANT, err error) {
+	return disp.InvokeWithOptionalArgs(name, ole.DISPATCH_PROPERTYGET, params)
+}
+
+// MustGetProperty retrieves property from IDispatch or panics.
+func MustGetProperty(disp *ole.IDispatch, name string, params ...interface{}) (result *ole.VARIANT) {
+	r, err := GetProperty(disp, name, params...)
+	if err != nil {
+		panic(err.Error())
+	}
+	return r
+}
+
+// PutProperty mutates property.
+func PutProperty(disp *ole.IDispatch, name string, params ...interface{}) (result *ole.VARIANT, err error) {
+	return disp.InvokeWithOptionalArgs(name, ole.DISPATCH_PROPERTYPUT, params)
+}
+
+// MustPutProperty mutates property or panics.
+func MustPutProperty(disp *ole.IDispatch, name string, params ...interface{}) (result *ole.VARIANT) {
+	r, err := PutProperty(disp, name, params...)
+	if err != nil {
+		panic(err.Error())
+	}
+	return r
+}
+
+// PutPropertyRef mutates property reference.
+func PutPropertyRef(disp *ole.IDispatch, name string, params ...interface{}) (result *ole.VARIANT, err error) {
+	return disp.InvokeWithOptionalArgs(name, ole.DISPATCH_PROPERTYPUTREF, params)
+}
+
+// MustPutPropertyRef mutates property reference or panics.
+func MustPutPropertyRef(disp *ole.IDispatch, name string, params ...interface{}) (result *ole.VARIANT) {
+	r, err := PutPropertyRef(disp, name, params...)
+	if err != nil {
+		panic(err.Error())
+	}
+	return r
+}
+
+func ForEach(disp *ole.IDispatch, f func(v *ole.VARIANT) error) error {
+	newEnum, err := disp.GetProperty("_NewEnum")
+	if err != nil {
+		return err
+	}
+	defer newEnum.Clear()
+
+	enum, err := newEnum.ToIUnknown().IEnumVARIANT(ole.IID_IEnumVariant)
+	if err != nil {
+		return err
+	}
+	defer enum.Release()
+
+	for item, length, err := enum.Next(1); length > 0; item, length, err = enum.Next(1) {
+		if err != nil {
+			return err
+		}
+		if ferr := f(&item); ferr != nil {
+			return ferr
+		}
+	}
+	return nil
+}

vendor/github.com/go-ole/go-ole/safearray.go

@@ -0,0 +1,27 @@
+// Package is meant to retrieve and process safe array data returned from COM.
+
+package ole
+
+// SafeArrayBound defines the SafeArray boundaries.
+type SafeArrayBound struct {
+	Elements   uint32
+	LowerBound int32
+}
+
+// SafeArray is how COM handles arrays.
+type SafeArray struct {
+	Dimensions   uint16
+	FeaturesFlag uint16
+	ElementsSize uint32
+	LocksAmount  uint32
+	Data         uint32
+	Bounds       [16]byte
+}
+
+// SAFEARRAY is obsolete, exists for backwards compatibility.
+// Use SafeArray
+type SAFEARRAY SafeArray
+
+// SAFEARRAYBOUND is obsolete, exists for backwards compatibility.
+// Use SafeArrayBound
+type SAFEARRAYBOUND SafeArrayBound

vendor/github.com/go-ole/go-ole/safearray_func.go

@@ -0,0 +1,211 @@
+// +build !windows
+
+package ole
+
+import (
+	"unsafe"
+)
+
+// safeArrayAccessData returns raw array pointer.
+//
+// AKA: SafeArrayAccessData in Windows API.
+func safeArrayAccessData(safearray *SafeArray) (uintptr, error) {
+	return uintptr(0), NewError(E_NOTIMPL)
+}
+
+// safeArrayUnaccessData releases raw array.
+//
+// AKA: SafeArrayUnaccessData in Windows API.
+func safeArrayUnaccessData(safearray *SafeArray) error {
+	return NewError(E_NOTIMPL)
+}
+
+// safeArrayAllocData allocates SafeArray.
+//
+// AKA: SafeArrayAllocData in Windows API.
+func safeArrayAllocData(safearray *SafeArray) error {
+	return NewError(E_NOTIMPL)
+}
+
+// safeArrayAllocDescriptor allocates SafeArray.
+//
+// AKA: SafeArrayAllocDescriptor in Windows API.
+func safeArrayAllocDescriptor(dimensions uint32) (*SafeArray, error) {
+	return nil, NewError(E_NOTIMPL)
+}
+
+// safeArrayAllocDescriptorEx allocates SafeArray.
+//
+// AKA: SafeArrayAllocDescriptorEx in Windows API.
+func safeArrayAllocDescriptorEx(variantType VT, dimensions uint32) (*SafeArray, error) {
+	return nil, NewError(E_NOTIMPL)
+}
+
+// safeArrayCopy returns copy of SafeArray.
+//
+// AKA: SafeArrayCopy in Windows API.
+func safeArrayCopy(original *SafeArray) (*SafeArray, error) {
+	return nil, NewError(E_NOTIMPL)
+}
+
+// safeArrayCopyData duplicates SafeArray into another SafeArray object.
+//
+// AKA: SafeArrayCopyData in Windows API.
+func safeArrayCopyData(original *SafeArray, duplicate *SafeArray) error {
+	return NewError(E_NOTIMPL)
+}
+
+// safeArrayCreate creates SafeArray.
+//
+// AKA: SafeArrayCreate in Windows API.
+func safeArrayCreate(variantType VT, dimensions uint32, bounds *SafeArrayBound) (*SafeArray, error) {
+	return nil, NewError(E_NOTIMPL)
+}
+
+// safeArrayCreateEx creates SafeArray.
+//
+// AKA: SafeArrayCreateEx in Windows API.
+func safeArrayCreateEx(variantType VT, dimensions uint32, bounds *SafeArrayBound, extra uintptr) (*SafeArray, error) {
+	return nil, NewError(E_NOTIMPL)
+}
+
+// safeArrayCreateVector creates SafeArray.
+//
+// AKA: SafeArrayCreateVector in Windows API.
+func safeArrayCreateVector(variantType VT, lowerBound int32, length uint32) (*SafeArray, error) {
+	return nil, NewError(E_NOTIMPL)
+}
+
+// safeArrayCreateVectorEx creates SafeArray.
+//
+// AKA: SafeArrayCreateVectorEx in Windows API.
+func safeArrayCreateVectorEx(variantType VT, lowerBound int32, length uint32, extra uintptr) (*SafeArray, error) {
+	return nil, NewError(E_NOTIMPL)
+}
+
+// safeArrayDestroy destroys SafeArray object.
+//
+// AKA: SafeArrayDestroy in Windows API.
+func safeArrayDestroy(safearray *SafeArray) error {
+	return NewError(E_NOTIMPL)
+}
+
+// safeArrayDestroyData destroys SafeArray object.
+//
+// AKA: SafeArrayDestroyData in Windows API.
+func safeArrayDestroyData(safearray *SafeArray) error {
+	return NewError(E_NOTIMPL)
+}
+
+// safeArrayDestroyDescriptor destroys SafeArray object.
+//
+// AKA: SafeArrayDestroyDescriptor in Windows API.
+func safeArrayDestroyDescriptor(safearray *SafeArray) error {
+	return NewError(E_NOTIMPL)
+}
+
+// safeArrayGetDim is the amount of dimensions in the SafeArray.
+//
+// SafeArrays may have multiple dimensions. Meaning, it could be
+// multidimensional array.
+//
+// AKA: SafeArrayGetDim in Windows API.
+func safeArrayGetDim(safearray *SafeArray) (*uint32, error) {
+	u := uint32(0)
+	return &u, NewError(E_NOTIMPL)
+}
+
+// safeArrayGetElementSize is the element size in bytes.
+//
+// AKA: SafeArrayGetElemsize in Windows API.
+func safeArrayGetElementSize(safearray *SafeArray) (*uint32, error) {
+	u := uint32(0)
+	return &u, NewError(E_NOTIMPL)
+}
+
+// safeArrayGetElement retrieves element at given index.
+func safeArrayGetElement(safearray *SafeArray, index int32, pv unsafe.Pointer) error {
+	return NewError(E_NOTIMPL)
+}
+
+// safeArrayGetElement retrieves element at given index and converts to string.
+func safeArrayGetElementString(safearray *SafeArray, index int32) (string, error) {
+	return "", NewError(E_NOTIMPL)
+}
+
+// safeArrayGetIID is the InterfaceID of the elements in the SafeArray.
+//
+// AKA: SafeArrayGetIID in Windows API.
+func safeArrayGetIID(safearray *SafeArray) (*GUID, error) {
+	return nil, NewError(E_NOTIMPL)
+}
+
+// safeArrayGetLBound returns lower bounds of SafeArray.
+//
+// SafeArrays may have multiple dimensions. Meaning, it could be
+// multidimensional array.
+//
+// AKA: SafeArrayGetLBound in Windows API.
+func safeArrayGetLBound(safearray *SafeArray, dimension uint32) (int32, error) {
+	return int32(0), NewError(E_NOTIMPL)
+}
+
+// safeArrayGetUBound returns upper bounds of SafeArray.
+//
+// SafeArrays may have multiple dimensions. Meaning, it could be
+// multidimensional array.
+//
+// AKA: SafeArrayGetUBound in Windows API.
+func safeArrayGetUBound(safearray *SafeArray, dimension uint32) (int32, error) {
+	return int32(0), NewError(E_NOTIMPL)
+}
+
+// safeArrayGetVartype returns data type of SafeArray.
+//
+// AKA: SafeArrayGetVartype in Windows API.
+func safeArrayGetVartype(safearray *SafeArray) (uint16, error) {
+	return uint16(0), NewError(E_NOTIMPL)
+}
+
+// safeArrayLock locks SafeArray for reading to modify SafeArray.
+//
+// This must be called during some calls to ensure that another process does not
+// read or write to the SafeArray during editing.
+//
+// AKA: SafeArrayLock in Windows API.
+func safeArrayLock(safearray *SafeArray) error {
+	return NewError(E_NOTIMPL)
+}
+
+// safeArrayUnlock unlocks SafeArray for reading.
+//
+// AKA: SafeArrayUnlock in Windows API.
+func safeArrayUnlock(safearray *SafeArray) error {
+	return NewError(E_NOTIMPL)
+}
+
+// safeArrayPutElement stores the data element at the specified location in the
+// array.
+//
+// AKA: SafeArrayPutElement in Windows API.
+func safeArrayPutElement(safearray *SafeArray, index int64, element uintptr) error {
+	return NewError(E_NOTIMPL)
+}
+
+// safeArrayGetRecordInfo accesses IRecordInfo info for custom types.
+//
+// AKA: SafeArrayGetRecordInfo in Windows API.
+//
+// XXX: Must implement IRecordInfo interface for this to return.
+func safeArrayGetRecordInfo(safearray *SafeArray) (interface{}, error) {
+	return nil, NewError(E_NOTIMPL)
+}
+
+// safeArraySetRecordInfo mutates IRecordInfo info for custom types.
+//
+// AKA: SafeArraySetRecordInfo in Windows API.
+//
+// XXX: Must implement IRecordInfo interface for this to return.
+func safeArraySetRecordInfo(safearray *SafeArray, recordInfo interface{}) error {
+	return NewError(E_NOTIMPL)
+}

vendor/github.com/go-ole/go-ole/safearray_test.go

@@ -0,0 +1,108 @@
+package ole
+
+// This tests more than one function. It tests all of the functions needed in
+// order to retrieve an SafeArray populated with Strings.
+func Example_safeArrayGetElementString() {
+	CoInitialize(0)
+	defer CoUninitialize()
+
+	clsid, err := CLSIDFromProgID("QBXMLRP2.RequestProcessor.1")
+	if err != nil {
+		if err.(*OleError).Code() == CO_E_CLASSSTRING {
+			return
+		}
+	}
+
+	unknown, err := CreateInstance(clsid, IID_IUnknown)
+	if err != nil {
+		return
+	}
+	defer unknown.Release()
+
+	dispatch, err := unknown.QueryInterface(IID_IDispatch)
+	if err != nil {
+		return
+	}
+
+	var dispid []int32
+	dispid, err = dispatch.GetIDsOfName([]string{"OpenConnection2"})
+	if err != nil {
+		return
+	}
+
+	var result *VARIANT
+	_, err = dispatch.Invoke(dispid[0], DISPATCH_METHOD, "", "Test Application 1", 1)
+	if err != nil {
+		return
+	}
+
+	dispid, err = dispatch.GetIDsOfName([]string{"BeginSession"})
+	if err != nil {
+		return
+	}
+
+	result, err = dispatch.Invoke(dispid[0], DISPATCH_METHOD, "", 2)
+	if err != nil {
+		return
+	}
+
+	ticket := result.ToString()
+
+	dispid, err = dispatch.GetIDsOfName([]string{"QBXMLVersionsForSession"})
+	if err != nil {
+		return
+	}
+
+	result, err = dispatch.Invoke(dispid[0], DISPATCH_PROPERTYGET, ticket)
+	if err != nil {
+		return
+	}
+
+	// Where the real tests begin.
+	var qbXMLVersions *SafeArray
+	var qbXmlVersionStrings []string
+	qbXMLVersions = result.ToArray().Array
+
+	// Get array bounds
+	var LowerBounds int32
+	var UpperBounds int32
+	LowerBounds, err = safeArrayGetLBound(qbXMLVersions, 1)
+	if err != nil {
+		return
+	}
+
+	UpperBounds, err = safeArrayGetUBound(qbXMLVersions, 1)
+	if err != nil {
+		return
+	}
+
+	totalElements := UpperBounds - LowerBounds + 1
+	qbXmlVersionStrings = make([]string, totalElements)
+
+	for i := int32(0); i < totalElements; i++ {
+		qbXmlVersionStrings[i], _ = safeArrayGetElementString(qbXMLVersions, i)
+	}
+
+	// Release Safe Array memory
+	safeArrayDestroy(qbXMLVersions)
+
+	dispid, err = dispatch.GetIDsOfName([]string{"EndSession"})
+	if err != nil {
+		return
+	}
+
+	_, err = dispatch.Invoke(dispid[0], DISPATCH_METHOD, ticket)
+	if err != nil {
+		return
+	}
+
+	dispid, err = dispatch.GetIDsOfName([]string{"CloseConnection"})
+	if err != nil {
+		return
+	}
+
+	_, err = dispatch.Invoke(dispid[0], DISPATCH_METHOD)
+	if err != nil {
+		return
+	}
+}

vendor/github.com/go-ole/go-ole/safearray_windows.go

@@ -0,0 +1,337 @@
+// +build windows
+
+package ole
+
+import (
+	"unsafe"
+)
+
+var (
+	procSafeArrayAccessData, _        = modoleaut32.FindProc("SafeArrayAccessData")
+	procSafeArrayAllocData, _         = modoleaut32.FindProc("SafeArrayAllocData")
+	procSafeArrayAllocDescriptor, _   = modoleaut32.FindProc("SafeArrayAllocDescriptor")
+	procSafeArrayAllocDescriptorEx, _ = modoleaut32.FindProc("SafeArrayAllocDescriptorEx")
+	procSafeArrayCopy, _              = modoleaut32.FindProc("SafeArrayCopy")
+	procSafeArrayCopyData, _          = modoleaut32.FindProc("SafeArrayCopyData")
+	procSafeArrayCreate, _            = modoleaut32.FindProc("SafeArrayCreate")
+	procSafeArrayCreateEx, _          = modoleaut32.FindProc("SafeArrayCreateEx")
+	procSafeArrayCreateVector, _      = modoleaut32.FindProc("SafeArrayCreateVector")
+	procSafeArrayCreateVectorEx, _    = modoleaut32.FindProc("SafeArrayCreateVectorEx")
+	procSafeArrayDestroy, _           = modoleaut32.FindProc("SafeArrayDestroy")
+	procSafeArrayDestroyData, _       = modoleaut32.FindProc("SafeArrayDestroyData")
+	procSafeArrayDestroyDescriptor, _ = modoleaut32.FindProc("SafeArrayDestroyDescriptor")
+	procSafeArrayGetDim, _            = modoleaut32.FindProc("SafeArrayGetDim")
+	procSafeArrayGetElement, _        = modoleaut32.FindProc("SafeArrayGetElement")
+	procSafeArrayGetElemsize, _       = modoleaut32.FindProc("SafeArrayGetElemsize")
+	procSafeArrayGetIID, _            = modoleaut32.FindProc("SafeArrayGetIID")
+	procSafeArrayGetLBound, _         = modoleaut32.FindProc("SafeArrayGetLBound")
+	procSafeArrayGetUBound, _         = modoleaut32.FindProc("SafeArrayGetUBound")
+	procSafeArrayGetVartype, _        = modoleaut32.FindProc("SafeArrayGetVartype")
+	procSafeArrayLock, _              = modoleaut32.FindProc("SafeArrayLock")
+	procSafeArrayPtrOfIndex, _        = modoleaut32.FindProc("SafeArrayPtrOfIndex")
+	procSafeArrayUnaccessData, _      = modoleaut32.FindProc("SafeArrayUnaccessData")
+	procSafeArrayUnlock, _            = modoleaut32.FindProc("SafeArrayUnlock")
+	procSafeArrayPutElement, _        = modoleaut32.FindProc("SafeArrayPutElement")
+	//procSafeArrayRedim, _             = modoleaut32.FindProc("SafeArrayRedim") // TODO
+	//procSafeArraySetIID, _            = modoleaut32.FindProc("SafeArraySetIID") // TODO
+	procSafeArrayGetRecordInfo, _ = modoleaut32.FindProc("SafeArrayGetRecordInfo")
+	procSafeArraySetRecordInfo, _ = modoleaut32.FindProc("SafeArraySetRecordInfo")
+)
+
+// safeArrayAccessData returns raw array pointer.
+//
+// AKA: SafeArrayAccessData in Windows API.
+// Todo: Test
+func safeArrayAccessData(safearray *SafeArray) (element uintptr, err error) {
+	err = convertHresultToError(
+		procSafeArrayAccessData.Call(
+			uintptr(unsafe.Pointer(safearray)),
+			uintptr(unsafe.Pointer(&element))))
+	return
+}
+
+// safeArrayUnaccessData releases raw array.
+//
+// AKA: SafeArrayUnaccessData in Windows API.
+func safeArrayUnaccessData(safearray *SafeArray) (err error) {
+	err = convertHresultToError(procSafeArrayUnaccessData.Call(uintptr(unsafe.Pointer(safearray))))
+	return
+}
+
+// safeArrayAllocData allocates SafeArray.
+//
+// AKA: SafeArrayAllocData in Windows API.
+func safeArrayAllocData(safearray *SafeArray) (err error) {
+	err = convertHresultToError(procSafeArrayAllocData.Call(uintptr(unsafe.Pointer(safearray))))
+	return
+}
+
+// safeArrayAllocDescriptor allocates SafeArray.
+//
+// AKA: SafeArrayAllocDescriptor in Windows API.
+func safeArrayAllocDescriptor(dimensions uint32) (safearray *SafeArray, err error) {
+	err = convertHresultToError(
+		procSafeArrayAllocDescriptor.Call(uintptr(dimensions), uintptr(unsafe.Pointer(&safearray))))
+	return
+}
+
+// safeArrayAllocDescriptorEx allocates SafeArray.
+//
+// AKA: SafeArrayAllocDescriptorEx in Windows API.
+func safeArrayAllocDescriptorEx(variantType VT, dimensions uint32) (safearray *SafeArray, err error) {
+	err = convertHresultToError(
+		procSafeArrayAllocDescriptorEx.Call(
+			uintptr(variantType),
+			uintptr(dimensions),
+			uintptr(unsafe.Pointer(&safearray))))
+	return
+}
+
+// safeArrayCopy returns copy of SafeArray.
+//
+// AKA: SafeArrayCopy in Windows API.
+func safeArrayCopy(original *SafeArray) (safearray *SafeArray, err error) {
+	err = convertHresultToError(
+		procSafeArrayCopy.Call(
+			uintptr(unsafe.Pointer(original)),
+			uintptr(unsafe.Pointer(&safearray))))
+	return
+}
+
+// safeArrayCopyData duplicates SafeArray into another SafeArray object.
+//
+// AKA: SafeArrayCopyData in Windows API.
+func safeArrayCopyData(original *SafeArray, duplicate *SafeArray) (err error) {
+	err = convertHresultToError(
+		procSafeArrayCopyData.Call(
+			uintptr(unsafe.Pointer(original)),
+			uintptr(unsafe.Pointer(duplicate))))
+	return
+}
+
+// safeArrayCreate creates SafeArray.
+//
+// AKA: SafeArrayCreate in Windows API.
+func safeArrayCreate(variantType VT, dimensions uint32, bounds *SafeArrayBound) (safearray *SafeArray, err error) {
+	sa, _, err := procSafeArrayCreate.Call(
+		uintptr(variantType),
+		uintptr(dimensions),
+		uintptr(unsafe.Pointer(bounds)))
+	safearray = (*SafeArray)(unsafe.Pointer(&sa))
+	return
+}
+
+// safeArrayCreateEx creates SafeArray.
+//
+// AKA: SafeArrayCreateEx in Windows API.
+func safeArrayCreateEx(variantType VT, dimensions uint32, bounds *SafeArrayBound, extra uintptr) (safearray *SafeArray, err error) {
+	sa, _, err := procSafeArrayCreateEx.Call(
+		uintptr(variantType),
+		uintptr(dimensions),
+		uintptr(unsafe.Pointer(bounds)),
+		extra)
+	safearray = (*SafeArray)(unsafe.Pointer(sa))
+	return
+}
+
+// safeArrayCreateVector creates SafeArray.
+//
+// AKA: SafeArrayCreateVector in Windows API.
+func safeArrayCreateVector(variantType VT, lowerBound int32, length uint32) (safearray *SafeArray, err error) {
+	sa, _, err := procSafeArrayCreateVector.Call(
+		uintptr(variantType),
+		uintptr(lowerBound),
+		uintptr(length))
+	safearray = (*SafeArray)(unsafe.Pointer(sa))
+	return
+}
+
+// safeArrayCreateVectorEx creates SafeArray.
+//
+// AKA: SafeArrayCreateVectorEx in Windows API.
+func safeArrayCreateVectorEx(variantType VT, lowerBound int32, length uint32, extra uintptr) (safearray *SafeArray, err error) {
+	sa, _, err := procSafeArrayCreateVectorEx.Call(
+		uintptr(variantType),
+		uintptr(lowerBound),
+		uintptr(length),
+		extra)
+	safearray = (*SafeArray)(unsafe.Pointer(sa))
+	return
+}
+
+// safeArrayDestroy destroys SafeArray object.
+//
+// AKA: SafeArrayDestroy in Windows API.
+func safeArrayDestroy(safearray *SafeArray) (err error) {
+	err = convertHresultToError(procSafeArrayDestroy.Call(uintptr(unsafe.Pointer(safearray))))
+	return
+}
+
+// safeArrayDestroyData destroys SafeArray object.
+//
+// AKA: SafeArrayDestroyData in Windows API.
+func safeArrayDestroyData(safearray *SafeArray) (err error) {
+	err = convertHresultToError(procSafeArrayDestroyData.Call(uintptr(unsafe.Pointer(safearray))))
+	return
+}
+
+// safeArrayDestroyDescriptor destroys SafeArray object.
+//
+// AKA: SafeArrayDestroyDescriptor in Windows API.
+func safeArrayDestroyDescriptor(safearray *SafeArray) (err error) {
+	err = convertHresultToError(procSafeArrayDestroyDescriptor.Call(uintptr(unsafe.Pointer(safearray))))
+	return
+}
+
+// safeArrayGetDim is the amount of dimensions in the SafeArray.
+//
+// SafeArrays may have multiple dimensions. Meaning, it could be
+// multidimensional array.
+//
+// AKA: SafeArrayGetDim in Windows API.
+func safeArrayGetDim(safearray *SafeArray) (dimensions *uint32, err error) {
+	l, _, err := procSafeArrayGetDim.Call(uintptr(unsafe.Pointer(safearray)))
+	dimensions = (*uint32)(unsafe.Pointer(l))
+	return
+}
+
+// safeArrayGetElementSize is the element size in bytes.
+//
+// AKA: SafeArrayGetElemsize in Windows API.
+func safeArrayGetElementSize(safearray *SafeArray) (length *uint32, err error) {
+	l, _, err := procSafeArrayGetElemsize.Call(uintptr(unsafe.Pointer(safearray)))
+	length = (*uint32)(unsafe.Pointer(l))
+	return
+}
+
+// safeArrayGetElement retrieves element at given index.
+func safeArrayGetElement(safearray *SafeArray, index int32, pv unsafe.Pointer) error {
+	return convertHresultToError(
+		procSafeArrayGetElement.Call(
+			uintptr(unsafe.Pointer(safearray)),
+			uintptr(unsafe.Pointer(&index)),
+			uintptr(pv)))
+}
+
+// safeArrayGetElementString retrieves element at given index and converts to string.
+func safeArrayGetElementString(safearray *SafeArray, index int32) (str string, err error) {
+	var element *int16
+	err = convertHresultToError(
+		procSafeArrayGetElement.Call(
+			uintptr(unsafe.Pointer(safearray)),
+			uintptr(unsafe.Pointer(&index)),
+			uintptr(unsafe.Pointer(&element))))
+	str = BstrToString(*(**uint16)(unsafe.Pointer(&element)))
+	SysFreeString(element)
+	return
+}
+
+// safeArrayGetIID is the InterfaceID of the elements in the SafeArray.
+//
+// AKA: SafeArrayGetIID in Windows API.
+func safeArrayGetIID(safearray *SafeArray) (guid *GUID, err error) {
+	err = convertHresultToError(
+		procSafeArrayGetIID.Call(
+			uintptr(unsafe.Pointer(safearray)),
+			uintptr(unsafe.Pointer(&guid))))
+	return
+}
+
+// safeArrayGetLBound returns lower bounds of SafeArray.
+//
+// SafeArrays may have multiple dimensions. Meaning, it could be
+// multidimensional array.
+//
+// AKA: SafeArrayGetLBound in Windows API.
+func safeArrayGetLBound(safearray *SafeArray, dimension uint32) (lowerBound int32, err error) {
+	err = convertHresultToError(
+		procSafeArrayGetLBound.Call(
+			uintptr(unsafe.Pointer(safearray)),
+			uintptr(dimension),
+			uintptr(unsafe.Pointer(&lowerBound))))
+	return
+}
+
+// safeArrayGetUBound returns upper bounds of SafeArray.
+//
+// SafeArrays may have multiple dimensions. Meaning, it could be
+// multidimensional array.
+//
+// AKA: SafeArrayGetUBound in Windows API.
+func safeArrayGetUBound(safearray *SafeArray, dimension uint32) (upperBound int32, err error) {
+	err = convertHresultToError(
+		procSafeArrayGetUBound.Call(
+			uintptr(unsafe.Pointer(safearray)),
+			uintptr(dimension),
+			uintptr(unsafe.Pointer(&upperBound))))
+	return
+}
+
+// safeArrayGetVartype returns data type of SafeArray.
+//
+// AKA: SafeArrayGetVartype in Windows API.
+func safeArrayGetVartype(safearray *SafeArray) (varType uint16, err error) {
+	err = convertHresultToError(
+		procSafeArrayGetVartype.Call(
+			uintptr(unsafe.Pointer(safearray)),
+			uintptr(unsafe.Pointer(&varType))))
+	return
+}
+
+// safeArrayLock locks SafeArray for reading to modify SafeArray.
+//
+// This must be called during some calls to ensure that another process does not
+// read or write to the SafeArray during editing.
+//
+// AKA: SafeArrayLock in Windows API.
+func safeArrayLock(safearray *SafeArray) (err error) {
+	err = convertHresultToError(procSafeArrayLock.Call(uintptr(unsafe.Pointer(safearray))))
+	return
+}
+
+// safeArrayUnlock unlocks SafeArray for reading.
+//
+// AKA: SafeArrayUnlock in Windows API.
+func safeArrayUnlock(safearray *SafeArray) (err error) {
+	err = convertHresultToError(procSafeArrayUnlock.Call(uintptr(unsafe.Pointer(safearray))))
+	return
+}
+
+// safeArrayPutElement stores the data element at the specified location in the
+// array.
+//
+// AKA: SafeArrayPutElement in Windows API.
+func safeArrayPutElement(safearray *SafeArray, index int64, element uintptr) (err error) {
+	err = convertHresultToError(
+		procSafeArrayPutElement.Call(
+			uintptr(unsafe.Pointer(safearray)),
+			uintptr(unsafe.Pointer(&index)),
+			uintptr(unsafe.Pointer(element))))
+	return
+}
+
+// safeArrayGetRecordInfo accesses IRecordInfo info for custom types.
+//
+// AKA: SafeArrayGetRecordInfo in Windows API.
+//
+// XXX: Must implement IRecordInfo interface for this to return.
+func safeArrayGetRecordInfo(safearray *SafeArray) (recordInfo interface{}, err error) {
+	err = convertHresultToError(
+		procSafeArrayGetRecordInfo.Call(
+			uintptr(unsafe.Pointer(safearray)),
+			uintptr(unsafe.Pointer(&recordInfo))))
+	return
+}
+
+// safeArraySetRecordInfo mutates IRecordInfo info for custom types.
+//
+// AKA: SafeArraySetRecordInfo in Windows API.
+//
+// XXX: Must implement IRecordInfo interface for this to return.
+func safeArraySetRecordInfo(safearray *SafeArray, recordInfo interface{}) (err error) {
+	err = convertHresultToError(
+		procSafeArraySetRecordInfo.Call(
+			uintptr(unsafe.Pointer(safearray)),
+			uintptr(unsafe.Pointer(&recordInfo))))
+	return
+}

vendor/github.com/go-ole/go-ole/safearrayconversion.go

@@ -0,0 +1,140 @@
+// Helper for converting SafeArray to array of objects.
+
+package ole
+
+import (
+	"unsafe"
+)
+
+type SafeArrayConversion struct {
+	Array *SafeArray
+}
+
+func (sac *SafeArrayConversion) ToStringArray() (strings []string) {
+	totalElements, _ := sac.TotalElements(0)
+	strings = make([]string, totalElements)
+
+	for i := int32(0); i < totalElements; i++ {
+		strings[int32(i)], _ = safeArrayGetElementString(sac.Array, i)
+	}
+
+	return
+}
+
+func (sac *SafeArrayConversion) ToByteArray() (bytes []byte) {
+	totalElements, _ := sac.TotalElements(0)
+	bytes = make([]byte, totalElements)
+
+	for i := int32(0); i < totalElements; i++ {
+		safeArrayGetElement(sac.Array, i, unsafe.Pointer(&bytes[int32(i)]))
+	}
+
+	return
+}
+
+func (sac *SafeArrayConversion) ToValueArray() (values []interface{}) {
+	totalElements, _ := sac.TotalElements(0)
+	values = make([]interface{}, totalElements)
+	vt, _ := safeArrayGetVartype(sac.Array)
+
+	for i := int32(0); i < totalElements; i++ {
+		switch VT(vt) {
+		case VT_BOOL:
+			var v bool
+			safeArrayGetElement(sac.Array, i, unsafe.Pointer(&v))
+			values[i] = v
+		case VT_I1:
+			var v int8
+			safeArrayGetElement(sac.Array, i, unsafe.Pointer(&v))
+			values[i] = v
+		case VT_I2:
+			var v int16
+			safeArrayGetElement(sac.Array, i, unsafe.Pointer(&v))
+			values[i] = v
+		case VT_I4:
+			var v int32
+			safeArrayGetElement(sac.Array, i, unsafe.Pointer(&v))
+			values[i] = v
+		case VT_I8:
+			var v int64
+			safeArrayGetElement(sac.Array, i, unsafe.Pointer(&v))
+			values[i] = v
+		case VT_UI1:
+			var v uint8
+			safeArrayGetElement(sac.Array, i, unsafe.Pointer(&v))
+			values[i] = v
+		case VT_UI2:
+			var v uint16
+			safeArrayGetElement(sac.Array, i, unsafe.Pointer(&v))
+			values[i] = v
+		case VT_UI4:
+			var v uint32
+			safeArrayGetElement(sac.Array, i, unsafe.Pointer(&v))
+			values[i] = v
+		case VT_UI8:
+			var v uint64
+			safeArrayGetElement(sac.Array, i, unsafe.Pointer(&v))
+			values[i] = v
+		case VT_R4:
+			var v float32
+			safeArrayGetElement(sac.Array, i, unsafe.Pointer(&v))
+			values[i] = v
+		case VT_R8:
+			var v float64
+			safeArrayGetElement(sac.Array, i, unsafe.Pointer(&v))
+			values[i] = v
+		case VT_BSTR:
+			var v string
+			safeArrayGetElement(sac.Array, i, unsafe.Pointer(&v))
+			values[i] = v
+		case VT_VARIANT:
+			var v VARIANT
+			safeArrayGetElement(sac.Array, i, unsafe.Pointer(&v))
+			values[i] = v.Value()
+		default:
+			// TODO
+		}
+	}
+
+	return
+}
+
+func (sac *SafeArrayConversion) GetType() (varType uint16, err error) {
+	return safeArrayGetVartype(sac.Array)
+}
+
+func (sac *SafeArrayConversion) GetDimensions() (dimensions *uint32, err error) {
+	return safeArrayGetDim(sac.Array)
+}
+
+func (sac *SafeArrayConversion) GetSize() (length *uint32, err error) {
+	return safeArrayGetElementSize(sac.Array)
+}
+
+func (sac *SafeArrayConversion) TotalElements(index uint32) (totalElements int32, err error) {
+	if index < 1 {
+		index = 1
+	}
+
+	// Get array bounds
+	var LowerBounds int32
+	var UpperBounds int32
+
+	LowerBounds, err = safeArrayGetLBound(sac.Array, index)
+	if err != nil {
+		return
+	}
+
+	UpperBounds, err = safeArrayGetUBound(sac.Array, index)
+	if err != nil {
+		return
+	}
+
+	totalElements = UpperBounds - LowerBounds + 1
+	return
+}
+
+// Release Safe Array memory
+func (sac *SafeArrayConversion) Release() {
+	safeArrayDestroy(sac.Array)
+}

vendor/github.com/go-ole/go-ole/safearrayconversion_test.go

@@ -0,0 +1,119 @@
+// +build windows
+
+package ole
+
+import (
+	"fmt"
+	"strings"
+	"testing"
+)
+
+// This tests more than one function. It tests all of the functions needed in order to retrieve an
+// SafeArray populated with Strings.
+func TestSafeArrayConversionString(t *testing.T) {
+	CoInitialize(0)
+	defer CoUninitialize()
+
+	clsid, err := CLSIDFromProgID("QBXMLRP2.RequestProcessor.1")
+	if err != nil {
+		if err.(*OleError).Code() == CO_E_CLASSSTRING {
+			return
+		}
+		t.Log(err)
+		t.FailNow()
+	}
+
+	unknown, err := CreateInstance(clsid, IID_IUnknown)
+	if err != nil {
+		t.Log(err)
+		t.FailNow()
+	}
+	defer unknown.Release()
+
+	dispatch, err := unknown.QueryInterface(IID_IDispatch)
+	if err != nil {
+		t.Log(err)
+		t.FailNow()
+	}
+
+	var dispid []int32
+	dispid, err = dispatch.GetIDsOfName([]string{"OpenConnection2"})
+	if err != nil {
+		t.Log(err)
+		t.FailNow()
+	}
+
+	var result *VARIANT
+	_, err = dispatch.Invoke(dispid[0], DISPATCH_METHOD, "", "Test Application 1", 1)
+	if err != nil {
+		t.Log(err)
+		t.FailNow()
+	}
+
+	dispid, err = dispatch.GetIDsOfName([]string{"BeginSession"})
+	if err != nil {
+		t.Log(err)
+		t.FailNow()
+	}
+
+	result, err = dispatch.Invoke(dispid[0], DISPATCH_METHOD, "", 2)
+	if err != nil {
+		t.Log(err)
+		t.FailNow()
+	}
+
+	ticket := result.ToString()
+
+	dispid, err = dispatch.GetIDsOfName([]string{"QBXMLVersionsForSession"})
+	if err != nil {
+		t.Log(err)
+		t.FailNow()
+	}
+
+	result, err = dispatch.Invoke(dispid[0], DISPATCH_PROPERTYGET, ticket)
+	if err != nil {
+		t.Log(err)
+		t.FailNow()
+	}
+
+	// Where the real tests begin.
+	conversion := result.ToArray()
+
+	totalElements, _ := conversion.TotalElements(0)
+	if totalElements != 13 {
+		t.Log(fmt.Sprintf("%d total elements does not equal 13\n", totalElements))
+		t.Fail()
+	}
+
+	versions := conversion.ToStringArray()
+	if len(versions) != 13 {
+		t.Log(fmt.Sprintf("%s\n", strings.Join(versions, ", ")))
+		t.Fail()
+	}
+
+	conversion.Release()
+
+	dispid, err = dispatch.GetIDsOfName([]string{"EndSession"})
+	if err != nil {
+		t.Log(err)
+		t.FailNow()
+	}
+
+	_, err = dispatch.Invoke(dispid[0], DISPATCH_METHOD, ticket)
+	if err != nil {
+		t.Log(err)
+		t.FailNow()
+	}
+
+	dispid, err = dispatch.GetIDsOfName([]string{"CloseConnection"})
+	if err != nil {
+		t.Log(err)
+		t.FailNow()
+	}
+
+	_, err = dispatch.Invoke(dispid[0], DISPATCH_METHOD)
+	if err != nil {
+		t.Log(err)
+		t.FailNow()
+	}
+}

vendor/github.com/go-ole/go-ole/safearrayslices.go

@@ -0,0 +1,33 @@
+// +build windows
+
+package ole
+
+import (
+	"unsafe"
+)
+
+func safeArrayFromByteSlice(slice []byte) *SafeArray {
+	array, _ := safeArrayCreateVector(VT_UI1, 0, uint32(len(slice)))
+
+	if array == nil {
+		panic("Could not convert []byte to SAFEARRAY")
+	}
+
+	for i, v := range slice {
+		safeArrayPutElement(array, int64(i), uintptr(unsafe.Pointer(&v)))
+	}
+	return array
+}
+
+func safeArrayFromStringSlice(slice []string) *SafeArray {
+	array, _ := safeArrayCreateVector(VT_BSTR, 0, uint32(len(slice)))
+
+	if array == nil {
+		panic("Could not convert []string to SAFEARRAY")
+	}
+	// SysAllocStringLen(s)
+	for i, v := range slice {
+		safeArrayPutElement(array, int64(i), uintptr(unsafe.Pointer(SysAllocStringLen(v))))
+	}
+	return array
+}

vendor/github.com/go-ole/go-ole/utility.go

@@ -0,0 +1,101 @@
+package ole
+
+import (
+	"unicode/utf16"
+	"unsafe"
+)
+
+// ClassIDFrom retrieves class ID whether given is program ID or application string.
+//
+// Helper that provides check against both Class ID from Program ID and Class ID from string. It is
+// faster, if you know which you are using, to use the individual functions, but this will check
+// against available functions for you.
+func ClassIDFrom(programID string) (classID *GUID, err error) {
+	classID, err = CLSIDFromProgID(programID)
+	if err != nil {
+		classID, err = CLSIDFromString(programID)
+		if err != nil {
+			return
+		}
+	}
+	return
+}
+
+// BytePtrToString converts byte pointer to a Go string.
+func BytePtrToString(p *byte) string {
+	a := (*[10000]uint8)(unsafe.Pointer(p))
+	i := 0
+	for a[i] != 0 {
+		i++
+	}
+	return string(a[:i])
+}
+
+// UTF16PtrToString is alias for LpOleStrToString.
+//
+// Kept for compatibility reasons.
+func UTF16PtrToString(p *uint16) string {
+	return LpOleStrToString(p)
+}
+
+// LpOleStrToString converts COM Unicode to Go string.
+func LpOleStrToString(p *uint16) string {
+	if p == nil {
+		return ""
+	}
+
+	length := lpOleStrLen(p)
+	a := make([]uint16, length)
+
+	ptr := unsafe.Pointer(p)
+
+	for i := 0; i < int(length); i++ {
+		a[i] = *(*uint16)(ptr)
+		ptr = unsafe.Pointer(uintptr(ptr) + 2)
+	}
+
+	return string(utf16.Decode(a))
+}
+
+// BstrToString converts COM binary string to Go string.
+func BstrToString(p *uint16) string {
+	if p == nil {
+		return ""
+	}
+	length := SysStringLen((*int16)(unsafe.Pointer(p)))
+	a := make([]uint16, length)
+
+	ptr := unsafe.Pointer(p)
+
+	for i := 0; i < int(length); i++ {
+		a[i] = *(*uint16)(ptr)
+		ptr = unsafe.Pointer(uintptr(ptr) + 2)
+	}
+	return string(utf16.Decode(a))
+}
+
+// lpOleStrLen returns the length of Unicode string.
+func lpOleStrLen(p *uint16) (length int64) {
+	if p == nil {
+		return 0
+	}
+
+	ptr := unsafe.Pointer(p)
+
+	for i := 0; ; i++ {
+		if 0 == *(*uint16)(ptr) {
+			length = int64(i)
+			break
+		}
+		ptr = unsafe.Pointer(uintptr(ptr) + 2)
+	}
+	return
+}
+
+// convertHresultToError converts syscall to error, if call is unsuccessful.
+func convertHresultToError(hr uintptr, r2 uintptr, ignore error) (err error) {
+	if hr != 0 {
+		err = NewError(hr)
+	}
+	return
+}

vendor/github.com/go-ole/go-ole/variables.go

@@ -0,0 +1,16 @@
+// +build windows
+
+package ole
+
+import (
+	"syscall"
+)
+
+var (
+	modcombase     = syscall.NewLazyDLL("combase.dll")
+	modkernel32, _ = syscall.LoadDLL("kernel32.dll")
+	modole32, _    = syscall.LoadDLL("ole32.dll")
+	modoleaut32, _ = syscall.LoadDLL("oleaut32.dll")
+	modmsvcrt, _   = syscall.LoadDLL("msvcrt.dll")
+	moduser32, _   = syscall.LoadDLL("user32.dll")
+)

vendor/github.com/go-ole/go-ole/variant.go

@@ -0,0 +1,105 @@
+package ole
+
+import "unsafe"
+
+// NewVariant returns new variant based on type and value.
+func NewVariant(vt VT, val int64) VARIANT {
+	return VARIANT{VT: vt, Val: val}
+}
+
+// ToIUnknown converts Variant to Unknown object.
+func (v *VARIANT) ToIUnknown() *IUnknown {
+	if v.VT != VT_UNKNOWN {
+		return nil
+	}
+	return (*IUnknown)(unsafe.Pointer(uintptr(v.Val)))
+}
+
+// ToIDispatch converts variant to dispatch object.
+func (v *VARIANT) ToIDispatch() *IDispatch {
+	if v.VT != VT_DISPATCH {
+		return nil
+	}
+	return (*IDispatch)(unsafe.Pointer(uintptr(v.Val)))
+}
+
+// ToArray converts variant to SafeArray helper.
+func (v *VARIANT) ToArray() *SafeArrayConversion {
+	if v.VT != VT_SAFEARRAY {
+		if v.VT&VT_ARRAY == 0 {
+			return nil
+		}
+	}
+	var safeArray *SafeArray = (*SafeArray)(unsafe.Pointer(uintptr(v.Val)))
+	return &SafeArrayConversion{safeArray}
+}
+
+// ToString converts variant to Go string.
+func (v *VARIANT) ToString() string {
+	if v.VT != VT_BSTR {
+		return ""
+	}
+	return BstrToString(*(**uint16)(unsafe.Pointer(&v.Val)))
+}
+
+// Clear the memory of variant object.
+func (v *VARIANT) Clear() error {
+	return VariantClear(v)
+}
+
+// Value returns variant value based on its type.
+//
+// Currently supported types: 2- and 4-byte integers, strings, bools.
+// Note that 64-bit integers, datetimes, and other types are stored as strings
+// and will be returned as strings.
+//
+// Needs to be further converted, because this returns an interface{}.
+func (v *VARIANT) Value() interface{} {
+	switch v.VT {
+	case VT_I1:
+		return int8(v.Val)
+	case VT_UI1:
+		return uint8(v.Val)
+	case VT_I2:
+		return int16(v.Val)
+	case VT_UI2:
+		return uint16(v.Val)
+	case VT_I4:
+		return int32(v.Val)
+	case VT_UI4:
+		return uint32(v.Val)
+	case VT_I8:
+		return int64(v.Val)
+	case VT_UI8:
+		return uint64(v.Val)
+	case VT_INT:
+		return int(v.Val)
+	case VT_UINT:
+		return uint(v.Val)
+	case VT_INT_PTR:
+		return uintptr(v.Val) // TODO
+	case VT_UINT_PTR:
+		return uintptr(v.Val)
+	case VT_R4:
+		return *(*float32)(unsafe.Pointer(&v.Val))
+	case VT_R8:
+		return *(*float64)(unsafe.Pointer(&v.Val))
+	case VT_BSTR:
+		return v.ToString()
+	case VT_DATE:
+		// VT_DATE type will either return float64 or time.Time.
+		d := uint64(v.Val)
+		date, err := GetVariantDate(d)
+		if err != nil {
+			return float64(v.Val)
+		}
+		return date
+	case VT_UNKNOWN:
+		return v.ToIUnknown()
+	case VT_DISPATCH:
+		return v.ToIDispatch()
+	case VT_BOOL:
+		return v.Val != 0
+	}
+	return nil
+}

vendor/github.com/go-ole/go-ole/variant_386.go

@@ -0,0 +1,11 @@
+// +build 386
+
+package ole
+
+type VARIANT struct {
+	VT         VT     //  2
+	wReserved1 uint16 //  4
+	wReserved2 uint16 //  6
+	wReserved3 uint16 //  8
+	Val        int64  // 16
+}

vendor/github.com/go-ole/go-ole/variant_amd64.go

@@ -0,0 +1,12 @@
+// +build amd64
+
+package ole
+
+type VARIANT struct {
+	VT         VT      //  2
+	wReserved1 uint16  //  4
+	wReserved2 uint16  //  6
+	wReserved3 uint16  //  8
+	Val        int64   // 16
+	_          [8]byte // 24
+}

vendor/github.com/go-ole/go-ole/variant_date_386.go

@@ -0,0 +1,22 @@
+// +build windows,386
+
+package ole
+
+import (
+	"errors"
+	"syscall"
+	"time"
+	"unsafe"
+)
+
+// GetVariantDate converts COM Variant Time value to Go time.Time.
+func GetVariantDate(value uint64) (time.Time, error) {
+	var st syscall.Systemtime
+	v1 := uint32(value)
+	v2 := uint32(value >> 32)
+	r, _, _ := procVariantTimeToSystemTime.Call(uintptr(v1), uintptr(v2), uintptr(unsafe.Pointer(&st)))
+	if r != 0 {
+		return time.Date(int(st.Year), time.Month(st.Month), int(st.Day), int(st.Hour), int(st.Minute), int(st.Second), int(st.Milliseconds/1000), time.UTC), nil
+	}
+	return time.Now(), errors.New("Could not convert to time, passing current time.")
+}

vendor/github.com/go-ole/go-ole/variant_date_amd64.go

@@ -0,0 +1,20 @@
+// +build windows,amd64
+
+package ole
+
+import (
+	"errors"
+	"syscall"
+	"time"
+	"unsafe"
+)
+
+// GetVariantDate converts COM Variant Time value to Go time.Time.
+func GetVariantDate(value uint64) (time.Time, error) {
+	var st syscall.Systemtime
+	r, _, _ := procVariantTimeToSystemTime.Call(uintptr(value), uintptr(unsafe.Pointer(&st)))
+	if r != 0 {
+		return time.Date(int(st.Year), time.Month(st.Month), int(st.Day), int(st.Hour), int(st.Minute), int(st.Second), int(st.Milliseconds/1000), time.UTC), nil
+	}
+	return time.Now(), errors.New("Could not convert to time, passing current time.")
+}

vendor/github.com/go-ole/go-ole/variant_ppc64le.go

@@ -0,0 +1,12 @@
+// +build ppc64le
+
+package ole
+
+type VARIANT struct {
+	VT         VT      //  2
+	wReserved1 uint16  //  4
+	wReserved2 uint16  //  6
+	wReserved3 uint16  //  8
+	Val        int64   // 16
+	_          [8]byte // 24
+}

vendor/github.com/go-ole/go-ole/variant_s390x.go

@@ -0,0 +1,12 @@
+// +build s390x
+
+package ole
+
+type VARIANT struct {
+	VT         VT      //  2
+	wReserved1 uint16  //  4
+	wReserved2 uint16  //  6
+	wReserved3 uint16  //  8
+	Val        int64   // 16
+	_          [8]byte // 24
+}

vendor/github.com/go-ole/go-ole/vt_string.go

@@ -0,0 +1,58 @@
+// generated by stringer -output vt_string.go -type VT; DO NOT EDIT
+
+package ole
+
+import "fmt"
+
+const (
+	_VT_name_0 = "VT_EMPTYVT_NULLVT_I2VT_I4VT_R4VT_R8VT_CYVT_DATEVT_BSTRVT_DISPATCHVT_ERRORVT_BOOLVT_VARIANTVT_UNKNOWNVT_DECIMAL"
+	_VT_name_1 = "VT_I1VT_UI1VT_UI2VT_UI4VT_I8VT_UI8VT_INTVT_UINTVT_VOIDVT_HRESULTVT_PTRVT_SAFEARRAYVT_CARRAYVT_USERDEFINEDVT_LPSTRVT_LPWSTR"
+	_VT_name_2 = "VT_RECORDVT_INT_PTRVT_UINT_PTR"
+	_VT_name_3 = "VT_FILETIMEVT_BLOBVT_STREAMVT_STORAGEVT_STREAMED_OBJECTVT_STORED_OBJECTVT_BLOB_OBJECTVT_CFVT_CLSID"
+	_VT_name_4 = "VT_BSTR_BLOBVT_VECTOR"
+	_VT_name_5 = "VT_ARRAY"
+	_VT_name_6 = "VT_BYREF"
+	_VT_name_7 = "VT_RESERVED"
+	_VT_name_8 = "VT_ILLEGAL"
+)
+
+var (
+	_VT_index_0 = [...]uint8{0, 8, 15, 20, 25, 30, 35, 40, 47, 54, 65, 73, 80, 90, 100, 110}
+	_VT_index_1 = [...]uint8{0, 5, 11, 17, 23, 28, 34, 40, 47, 54, 64, 70, 82, 91, 105, 113, 122}
+	_VT_index_2 = [...]uint8{0, 9, 19, 30}
+	_VT_index_3 = [...]uint8{0, 11, 18, 27, 37, 55, 71, 85, 90, 98}
+	_VT_index_4 = [...]uint8{0, 12, 21}
+	_VT_index_5 = [...]uint8{0, 8}
+	_VT_index_6 = [...]uint8{0, 8}
+	_VT_index_7 = [...]uint8{0, 11}
+	_VT_index_8 = [...]uint8{0, 10}
+)
+
+func (i VT) String() string {
+	switch {
+	case 0 <= i && i <= 14:
+		return _VT_name_0[_VT_index_0[i]:_VT_index_0[i+1]]
+	case 16 <= i && i <= 31:
+		i -= 16
+		return _VT_name_1[_VT_index_1[i]:_VT_index_1[i+1]]
+	case 36 <= i && i <= 38:
+		i -= 36
+		return _VT_name_2[_VT_index_2[i]:_VT_index_2[i+1]]
+	case 64 <= i && i <= 72:
+		i -= 64
+		return _VT_name_3[_VT_index_3[i]:_VT_index_3[i+1]]
+	case 4095 <= i && i <= 4096:
+		i -= 4095
+		return _VT_name_4[_VT_index_4[i]:_VT_index_4[i+1]]
+	case i == 8192:
+		return _VT_name_5
+	case i == 16384:
+		return _VT_name_6
+	case i == 32768:
+		return _VT_name_7
+	case i == 65535:
+		return _VT_name_8
+	default:
+		return fmt.Sprintf("VT(%d)", i)
+	}
+}

vendor/github.com/go-ole/go-ole/winrt.go

@@ -0,0 +1,99 @@
+// +build windows
+
+package ole
+
+import (
+	"reflect"
+	"syscall"
+	"unicode/utf8"
+	"unsafe"
+)
+
+var (
+	procRoInitialize              = modcombase.NewProc("RoInitialize")
+	procRoActivateInstance        = modcombase.NewProc("RoActivateInstance")
+	procRoGetActivationFactory    = modcombase.NewProc("RoGetActivationFactory")
+	procWindowsCreateString       = modcombase.NewProc("WindowsCreateString")
+	procWindowsDeleteString       = modcombase.NewProc("WindowsDeleteString")
+	procWindowsGetStringRawBuffer = modcombase.NewProc("WindowsGetStringRawBuffer")
+)
+
+func RoInitialize(thread_type uint32) (err error) {
+	hr, _, _ := procRoInitialize.Call(uintptr(thread_type))
+	if hr != 0 {
+		err = NewError(hr)
+	}
+	return
+}
+
+func RoActivateInstance(clsid string) (ins *IInspectable, err error) {
+	hClsid, err := NewHString(clsid)
+	if err != nil {
+		return nil, err
+	}
+	defer DeleteHString(hClsid)
+
+	hr, _, _ := procRoActivateInstance.Call(
+		uintptr(unsafe.Pointer(hClsid)),
+		uintptr(unsafe.Pointer(&ins)))
+	if hr != 0 {
+		err = NewError(hr)
+	}
+	return
+}
+
+func RoGetActivationFactory(clsid string, iid *GUID) (ins *IInspectable, err error) {
+	hClsid, err := NewHString(clsid)
+	if err != nil {
+		return nil, err
+	}
+	defer DeleteHString(hClsid)
+
+	hr, _, _ := procRoGetActivationFactory.Call(
+		uintptr(unsafe.Pointer(hClsid)),
+		uintptr(unsafe.Pointer(iid)),
+		uintptr(unsafe.Pointer(&ins)))
+	if hr != 0 {
+		err = NewError(hr)
+	}
+	return
+}
+
+// HString is handle string for pointers.
+type HString uintptr
+
+// NewHString returns a new HString for Go string.
+func NewHString(s string) (hstring HString, err error) {
+	u16 := syscall.StringToUTF16Ptr(s)
+	len := uint32(utf8.RuneCountInString(s))
+	hr, _, _ := procWindowsCreateString.Call(
+		uintptr(unsafe.Pointer(u16)),
+		uintptr(len),
+		uintptr(unsafe.Pointer(&hstring)))
+	if hr != 0 {
+		err = NewError(hr)
+	}
+	return
+}
+
+// DeleteHString deletes HString.
+func DeleteHString(hstring HString) (err error) {
+	hr, _, _ := procWindowsDeleteString.Call(uintptr(hstring))
+	if hr != 0 {
+		err = NewError(hr)
+	}
+	return
+}
+
+// String returns Go string value of HString.
+func (h HString) String() string {
+	var u16buf uintptr
+	var u16len uint32
+	u16buf, _, _ = procWindowsGetStringRawBuffer.Call(
+		uintptr(h),
+		uintptr(unsafe.Pointer(&u16len)))
+
+	u16hdr := reflect.SliceHeader{Data: u16buf, Len: int(u16len), Cap: int(u16len)}
+	u16 := *(*[]uint16)(unsafe.Pointer(&u16hdr))
+	return syscall.UTF16ToString(u16)
+}

vendor/github.com/go-ole/go-ole/winrt_doc.go

@@ -0,0 +1,36 @@
+// +build !windows
+
+package ole
+
+// RoInitialize
+func RoInitialize(thread_type uint32) (err error) {
+	return NewError(E_NOTIMPL)
+}
+
+// RoActivateInstance
+func RoActivateInstance(clsid string) (ins *IInspectable, err error) {
+	return nil, NewError(E_NOTIMPL)
+}
+
+// RoGetActivationFactory
+func RoGetActivationFactory(clsid string, iid *GUID) (ins *IInspectable, err error) {
+	return nil, NewError(E_NOTIMPL)
+}
+
+// HString is handle string for pointers.
+type HString uintptr
+
+// NewHString returns a new HString for Go string.
+func NewHString(s string) (hstring HString, err error) {
+	return HString(uintptr(0)), NewError(E_NOTIMPL)
+}
+
+// DeleteHString deletes HString.
+func DeleteHString(hstring HString) (err error) {
+	return NewError(E_NOTIMPL)
+}
+
+// String returns Go string value of HString.
+func (h HString) String() string {
+	return ""
+}