这是我的截图函数，没法截到正在播放的RealOne中的内容。
//uses jpeg
procedure TForm1.snapscreen();
var
bmpscreen:Tbitmap;
jpegscreen:Tjpegimage;
FullscreenCanvas:TCanvas;
dc:HDC;
sourceRect, destRect: TRect;
begin
try
dc:=getdc(0);
fullscreencanvas:=Tcanvas.Create;
fullscreencanvas.Handle:=dc;
bmpscreen:=Tbitmap.create;
bmpscreen.Width :=screen.Width ;
bmpscreen.Height :=screen.Height ;
sourcerect:=rect(0,0,screen.Width ,screen.Height );
destrect:= rect(0,0,screen.Width ,screen.Height);
bmpscreen.Canvas.CopyRect(sourcerect,fullscreenCanvas,destrect);
jpegscreen:=Tjpegimage.Create ;
jpegscreen.Assign (bmpscreen);
jpegscreen.CompressionQuality:=80;
jpegscreen.SaveToFile(ExtractFilePath(ParamStr(0))+'tmp.jpg');
FullscreenCanvas.Free;
bmpscreen.Free;
jpegscreen.Free ;
ReleaseDC(0, DC);
except
end;
end;
