RECT rect;

     int x, y, nWidth, nHeight;

     GetWindowRect(&rect);

     x = rect.left;

     y = rect.top;

     nWidth = rect.right - x;

     nHeight = rect.bottom - y;

     for (int i = ; i < WINDOW_SHAKE_NUM; i++)

     {

         MoveWindow(x - , y, nWidth, nHeight, TRUE);

         Sleep(WIN_SHAKE_SLEEP_TIME);

         MoveWindow(x - , y - , nWidth, nHeight, TRUE);

         Sleep(WIN_SHAKE_SLEEP_TIME);

         MoveWindow(x, y - , nWidth, nHeight, TRUE);

         Sleep(WIN_SHAKE_SLEEP_TIME);

         MoveWindow(x, y, nWidth, nHeight, TRUE);

         Sleep(WIN_SHAKE_SLEEP_TIME);

     }