托盘程序TrayIcon

 CXTTrayIcon m_TrayIcon;

在OnCreate()函数里，创建

 if (!m_TrayIcon.Create(
  _T("Power Tools for MFC!"), // Toolktip text
  this,                       // Parent window
  IDR_MAINFRAME,               // Icon resource ID
  IDR_POPUP_TRAY,             // Resource ID of popup menu
  IDC_RESTORE,                // Default menu item for popup menu
  false))                     // True if default menu item is located by position
 {
  TRACE0("Failed to create tray icon/n");
  return -1;
 }

//重载OnSysCommand()函数

void CMainFrame::OnSysCommand(UINT nID, LPARAM lParam)
{
 // TODO: Add your message handler code here and/or call default
 switch(nID)  //如果鼠标点击最小化按钮
 {
 case SC_MINIMIZE:
         UpdateData();
         m_TrayIcon.MinimizeToTray(this);//最小化到托盘
         m_TrayIcon.ShowBalloonTip("asdsad", "Information",NIIF_INFO, 10);//弹出
  return;
 }
 CFrameWnd::OnSysCommand(nID, lParam);
}

//写一个回复窗口的函数

void CMainFrame::OnRestore()
{
 // TODO: Add your command handler code here
 m_TrayIcon.MaximizeFromTray(this);
}

//写一个退出程序的函数

//顺便说一下发送WM_SYSCOMMAND消息

SendMessage(WM_SYSCOMMAND,SC_MINIMIZE,NULL);
SendMessage(WM_SYSCOMMAND,SC_CLOSE,NULL);