在中Visual Studio .NET 2003利用DirectShow播放媒体文件(三)[5]

           cclientdc dc(getdlgitem(idc_vw_frame));

           dc.setbkcolor(rgb(0,0,0));

           crect rc; 

           getdlgitem(idc_vw_frame)->getclientrect(rc);

           //clienttoscreen(rc);

           dc.fillrect(rc, cbrush::fromhandle((hbrush)getstockobject(black_brush)));

           getdlgitem(idc_vw_frame)->invalidate();

       }

        cdialog::onpaint();

    }

}