在中Visual Studio .NET 2003利用DirectShow播放媒体文件(四)[2]

       pvideowinow->setwindowposition(rc.left, rc.top, rc.width(), rc.height());

       pvideowinow->release();

       pvideowinow = null;

    }

}

void cplaywnddlg::cleanup(void)

{

    long levcode;

    ivideowindow *pvidwin = null;

    if(!m_pgraph)

       return;