在中Visual Studio .NET 2003利用DirectShow播放媒体文件(四)[3]

    m_pgraph->queryinterface(iid_ivideowindow, (void **)&pvidwin);

    m_pevent->waitforcompletion(infinite, &levcode);

    pvidwin->put_visible(oafalse);

    pvidwin->release();

    m_pmediaseeking->release();

    m_pmediacontrol->release();

    m_pevent->release();

    m_pgraph->release();

    m_pmediaseeking = null;