emWin通过函数WM_SetCallback()自定义回调函数

下段代码就是通过 MESSAGEBOX 控件的 OK 按键实现删除信息框的对话框，即消息框的背景窗口 DIALOG 删除了，留下了 TEXT & BUTTON

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 hWin = MESSAGEBOX_Create("这是一个测试", "测试标题", GUI_MESSAGEBOX_CF_MOVEABLE);
 WM_SetCallback(hWin, _cbDialogMessage);
 static void _cbDialogMessage(WM_MESSAGE *pMsg)
 {
     WM_HWIN hWin;
     int NCode;
     int Id;
     hWin = pMsg->hWin;
     switch (pMsg->MsgId)
     {
         case WM_NOTIFY_PARENT:
             Id = WM_GetId(pMsg->hWinSrc);
             NCode = pMsg->Data.v;
             switch (Id)
             {
                 case GUI_ID_OK:
                     switch (NCode)
                     {
                         case WM_NOTIFICATION_CLICKED:
                             break;
                         case WM_NOTIFICATION_RELEASED:
                             WM_DeleteWindow(hWin);
                             break;
                     }
                     break;
             }
             break;
         default:
             WM_DefaultProc(pMsg);
             break;
      }
 }