A: view's component events/procs

cef/buffer-panel_windows.go

@@ -24,7 +24,7 @@ import (
 )
 
 type onIMECommitTextEvent func(sender lcl.IObject, text string, replacementRange TCefRange, relativeCursorPos int32)
-type onIMESetCompositionEvent func(sender lcl.IObject, text string, underlines []*TCefCompositionUnderline, replacementRange, selectionRange TCefRange)
+type onIMESetCompositionEvent func(sender lcl.IObject, text string, underlines *TCefCompositionUnderlineArray, replacementRange, selectionRange TCefRange)
 type onHandledMessageEvent func(sender lcl.IObject, message *types.TMessage, lResult *types.LRESULT, handled *bool)
 
 func (m *TBufferPanel) SetOnIMECancelComposition(fn lcl.TNotifyEvent) {
@@ -63,14 +63,13 @@ func init() {
 		case onIMECommitTextEvent:
 			fn.(onIMECommitTextEvent)(lcl.AsObject(getPtr(0)), api.GoStr(getVal(1)), *(*TCefRange)(getPtr(2)), int32(getVal(3)))
 		case onIMESetCompositionEvent:
-			//underlinesPtr := getVal(2)
-			underlinesLen := int32(getVal(3))
-			underlines := make([]*TCefCompositionUnderline, underlinesLen)
+			underlines := &TCefCompositionUnderlineArray{
+				count:  int(int32(getVal(3))),
+				ptr:    *(*uintptr)(getPtr(2)),
+				sizeOf: unsafe.Sizeof(TCefCompositionUnderline{}),
+			}
 			replacementRange := *(*TCefRange)(getPtr(4))
 			selectionRange := *(*TCefRange)(getPtr(5))
-			for i := 0; i < int(underlinesLen); i++ {
-
-			}
 			fn.(onIMESetCompositionEvent)(lcl.AsObject(getPtr(0)), api.GoStr(getVal(1)), underlines, replacementRange, selectionRange)
 		case onHandledMessageEvent:
 			message := (*types.TMessage)(getPtr(1))

cef/types.go

@@ -1166,12 +1166,29 @@ type TCefPopupFeatures struct {
 // /include/internal/cef_types.h (cef_composition_underline_t)
 type TCefCompositionUnderline struct {
 	Range           TCefRange
-	Color           Cardinal
-	BackgroundColor Cardinal
+	Color           TCefColor
+	BackgroundColor TCefColor
 	Thick           int32
 	Style           TCefCompositionUnderlineStyle
 }
 
+type TCefCompositionUnderlineArray struct {
+	count  int
+	ptr    uintptr
+	sizeOf uintptr
+}
+
+func (m *TCefCompositionUnderlineArray) Count() int {
+	return m.count
+}
+
+func (m *TCefCompositionUnderlineArray) Get(index int) *TCefCompositionUnderline {
+	if index >= 0 && index < m.count {
+		return (*TCefCompositionUnderline)(common.GetParamPtr(m.ptr, index*int(m.sizeOf)))
+	}
+	return nil
+}
+
 // /include/internal/cef_types.h (cef_box_layout_settings_t)
 type TCefBoxLayoutSettings struct {
 	Horizontal                    Integer

example/osr/windows/osr-windows.go

@@ -370,6 +370,9 @@ func (m *WindowForm) bufferPanelEvent() {
 			}
 		}
 	})
+	m.bufferPanel.SetOnIMESetComposition(func(sender lcl.IObject, text string, underlines *cef.TCefCompositionUnderlineArray, replacementRange, selectionRange cef.TCefRange) {
+		fmt.Println("SetOnIMESetComposition", replacementRange, selectionRange)
+	})
 }
 
 func (m *WindowForm) controlPanelWidget() {