在中Visual Studio .NET 2003利用DirectShow播放媒体文件(四)[8]

    if(m_pgraph)

    {

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

       pvidwin->put_visible(oatrue);

       m_pgraph->queryinterface(iid_imediacontrol, (void **)&m_pmediacontrol);

       m_pmediacontrol->run();

       m_isplaying = true;

       getdlgitem(idc_play_button)->enablewindow(false);

       getdlgitem(idc_pause_button)->enablewindow(true);