在中Visual Studio .NET 2003利用DirectShow播放媒体文件(四)[6]

           &pos, am_seeking_nopositioning);

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

       pvidwin->put_visible(oafalse);

       m_isplaying = false;

       getdlgitem(idc_play_button)->enablewindow(true);

       getdlgitem(idc_pause_button)->enablewindow(false);

       pvidwin->release();

       long levcode;