trayDlg.h:

afx_msg LRESULT onShowTask(WPARAM wParam,LPARAM lParam); void Tdehide(); void dehide();

trayDlg.cpp:

#define WM_SHOWTASK WM_USER BEGIN_MESSAGE_MAP(CtrayDlg, CDialogEx)     ON_MESSAGE(WM_SHOWTASK,onShowTask) END_MESSAGE_MAP() void CtrayDlg::OnBnClickedButton1() {
   // TODO: 在此添加控件通知处理程序代码     dehide();     ShowWindow(SW_HIDE); } LRESULT CtrayDlg::onShowTask(WPARAM wParam,LPARAM lParam) {
   if (wParam!=IDR_MAINFRAME)     {
   return 1;     } switch(lParam)     {
   case WM_RBUTTONUP:         {
               LPPOINT lpoint=new tagPOINT;             ::GetCursorPos(lpoint);             CMenu menu;             menu.CreatePopupMenu();             menu.AppendMenu(MF_STRING,WM_DESTROY,_T("关闭"));             menu.TrackPopupMenu(TPM_LEFTALIGN,lpoint->x,lpoint->y,this);             HMENU hmenu=menu.Detach();             menu.DestroyMenu();             delete lpoint;         } break; case WM_LBUTTONDBLCLK:         {
   this->ShowWindow(SW_SHOW);             Tdehide();         } break;     } return 0; } void CtrayDlg::dehide() {
       NOTIFYICONDATA tnd;     tnd.cbSize=sizeof(NOTIFYICONDATA);     tnd.hWnd=this->m_hWnd;     tnd.uID=IDR_MAINFRAME;     tnd.uFlags=NIF_MESSAGE|NIF_ICON|NIF_TIP;     tnd.uCallbackMessage=WM_SHOWTASK; //用户自定义的消息，即鼠标在任务栏上程序图标上动作时图标发送的消息     tnd.hIcon=LoadIcon(AfxGetInstanceHandle(),MAKEINTRESOURCE(IDR_MAINFRAME));     strcpy(tnd.szTip,"测试程序");//图标提示为"测试程序"     Shell_NotifyIcon(NIM_ADD,&tnd);//向任务栏添图标 } void CtrayDlg::Tdehide() {
       NOTIFYICONDATA tnd;     tnd.cbSize=sizeof(NOTIFYICONDATA);     tnd.hWnd=this->m_hWnd;     tnd.uID=IDR_MAINFRAME;     tnd.uFlags=NIF_MESSAGE|NIF_ICON|NIF_TIP;     tnd.uCallbackMessage=WM_SHOWTASK; //用户自定义的消息，即鼠标在任务栏上程序图标上动作时图标发送的消息     tnd.hIcon=LoadIcon(AfxGetInstanceHandle(),MAKEINTRESOURCE(IDR_MAINFRAME));     strcpy(tnd.szTip,"测试程序");//图标提示为"测试程序"     Shell_NotifyIcon(NIM_DELETE,&tnd);//向任务栏删图标 }