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    RECT rc;
    if (::GetWindowRect(g_hwnd, &rc))
    {
        LONG width = rc.right - rc.left;
        LONG height = rc.bottom - rc.top;
        for (unsigned int i = 1; i <= DEFAULT_SHOW_STEP; i++)
        {
            LONG h = height * i / DEFAULT_SHOW_STEP;
            ::SetWindowPos(g_hwnd, HWND_TOPMOST, rc.left, rc.bottom - h, width, h, SWP_NOACTIVATE | SWP_SHOWWINDOW);
            Sleep(DEFAULT_SHOW_TIME / DEFAULT_SHOW_STEP);
        }
    }