WM_PARENTNOTIFY消息

当子窗口被建立,销毁或用户单击鼠标键时,WM_PARENTNOTIFY被发送
使用如下:

LRESULT WINAPI xxx_WndProc(HWND hwnd,UINT uMsg,WPARAM wParam,LPARAM lParam)
{
   switch(uMsg)
   {
      HANDLE_MSG(hwnd,WM_PARENTNOTIFY,  xxxx_OnParentNotify);
   }
   return( DefWindowProc(hwnd,uMsg,wParam,lParam));
}

void xxx_OnParentNotify(HWND hwnd, UINT msg, HWND hwndChild, int idChild)
{
   switch(msg)
  {

   case WM_RBUTTONDOWN:
  
  //when the user clicks the right mouse button over the eidt window,
  //the system notifies the parent window by sending the
  //WM_PARENTNOTIFY message.once here ,we enter "peer" mode.

   break;   
  }
}

更多： http://msdn.microsoft.com/en-us/library/ms632638(v=vs.85).aspx