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140 lines
3.8 KiB
C++
140 lines
3.8 KiB
C++
////////////////////////////////////////////////////////////////
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// If this code works, it was written by Paul DiLascia.
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// If not, I don't know who wrote it.
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//
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#include "stdafx.h"
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#include "TrayIcon.h"
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#include <afxpriv.h> // for AfxLoadString
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IMPLEMENT_DYNAMIC(CTrayIcon, CCmdTarget)
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CTrayIcon::CTrayIcon(UINT uID)
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{
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// Initialize NOTIFYICONDATA
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memset(&m_nid, 0 , sizeof(m_nid));
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m_nid.cbSize = sizeof(m_nid);
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m_nid.uID = uID; // never changes after construction
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// Use resource string as tip if there is one
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AfxLoadString(uID, m_nid.szTip, sizeof(m_nid.szTip));
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}
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CTrayIcon::~CTrayIcon()
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{
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SetIcon(0); // remove icon from system tray
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}
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//////////////////
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// Set notification window. It must created already.
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void CTrayIcon::SetNotificationWnd(CWnd* pNotifyWnd, UINT uCbMsg)
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{
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// If the following assert fails, you're probably
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// calling me before you created your window. Oops.
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ASSERT(pNotifyWnd==NULL || ::IsWindow(pNotifyWnd->GetSafeHwnd()));
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m_nid.hWnd = pNotifyWnd->GetSafeHwnd();
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ASSERT(uCbMsg==0 || uCbMsg>=WM_USER);
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m_nid.uCallbackMessage = uCbMsg;
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}
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//////////////////
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// This is the main variant for setting the icon.
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// Sets both the icon and tooltip from resource ID
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// To remove the icon, call SetIcon(0)
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//
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BOOL CTrayIcon::SetIcon(UINT uID)
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{
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HICON hicon=NULL;
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if (uID) {
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AfxLoadString(uID, m_nid.szTip, sizeof(m_nid.szTip));
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hicon = AfxGetApp()->LoadIcon(uID);
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}
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return SetIcon(hicon, NULL);
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}
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//////////////////
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// Common SetIcon for all overloads.
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//
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BOOL CTrayIcon::SetIcon(HICON hicon, LPCSTR lpTip)
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{
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UINT msg;
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m_nid.uFlags = 0;
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// Set the icon
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if (hicon) {
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// Add or replace icon in system tray
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msg = m_nid.hIcon ? NIM_MODIFY : NIM_ADD;
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m_nid.hIcon = hicon;
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m_nid.uFlags |= NIF_ICON;
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} else { // remove icon from tray
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if (m_nid.hIcon==NULL)
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return TRUE; // already deleted
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msg = NIM_DELETE;
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}
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// Use the tip, if any
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if (lpTip)
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strncpy(m_nid.szTip, lpTip, sizeof(m_nid.szTip));
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if (m_nid.szTip[0])
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m_nid.uFlags |= NIF_TIP;
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// Use callback if any
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if (m_nid.uCallbackMessage && m_nid.hWnd)
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m_nid.uFlags |= NIF_MESSAGE;
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// Do it
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BOOL bRet = Shell_NotifyIcon(msg, &m_nid);
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if (msg==NIM_DELETE || !bRet)
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m_nid.hIcon = NULL; // failed
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return bRet;
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}
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/////////////////
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// Default event handler handles right-menu and doubleclick.
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// Call this function from your own notification handler.
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//
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LRESULT CTrayIcon::OnTrayNotification(WPARAM wID, LPARAM lEvent)
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{
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static LPCSTR MouseMessages[] = { "WM_MOUSEMOVE",
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"WM_LBUTTONDOWN", "WM_LBUTTONUP", "WM_LBUTTONDBLCLK",
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"WM_RBUTTONDOWN", "WM_RBUTTONUP", "WM_RBUTTONDBLCLK",
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"WM_MBUTTONDOWN", "WM_MBUTTONUP", "WM_MBUTTONDBLCLK" };
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if (wID!=m_nid.uID || (lEvent!=WM_RBUTTONUP
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&& lEvent!=WM_LBUTTONDBLCLK && lEvent != WM_LBUTTONDOWN))
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{
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return 0;
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}
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// If there's a resource menu with the same ID as the icon, use it as
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// the right-button popup menu. CTrayIcon will interprets the first
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// item in the menu as the default command for WM_LBUTTONDBLCLK
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//
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CMenu menu;
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if (!menu.LoadMenu(m_nid.uID))
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return 0;
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CMenu* pSubMenu = menu.GetSubMenu(0);
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if (!pSubMenu)
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return 0;
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if (lEvent==WM_RBUTTONUP) {
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// Make first menu item the default (bold font)
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::SetMenuDefaultItem(pSubMenu->m_hMenu, 0, TRUE);
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// Display the menu at the current mouse location. There's a "bug"
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// (Microsoft calls it a feature) in Windows 95 that requires calling
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// SetForegroundWindow. To find out more, search for Q135788 in MSDN.
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//
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CPoint mouse;
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GetCursorPos(&mouse);
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::SetForegroundWindow(m_nid.hWnd);
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::TrackPopupMenu(pSubMenu->m_hMenu, 0, mouse.x, mouse.y, 0,
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m_nid.hWnd, NULL);
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} else // double click: execute first menu item
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::SendMessage(m_nid.hWnd, WM_COMMAND, pSubMenu->GetMenuItemID(0), 0);
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return 1; // handled
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}
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