本文实例讲述了Delphi实现截屏存盘的方法。分享给大家供大家参考。具体分析如下：
该实例可实现截取屏幕，并保存为JPEG文件格式的功能。
procedure TForm1.ScreenCap(LeftPos,TopPos,RightPos,BottomPos:integer); var RectWidth,RectHeight:integer; SourceDC,DestDC,Bhandle:integer; Bitmap:TBitmap; MyJpeg: TJpegImage; Stream:TMemoryStream; begin MyJpeg:= TJpegImage.Create; RectWidth:=RightPos-LeftPos; RectHeight:=BottomPos-TopPos; SourceDC:=CreateDC('DISPLAY','','',nil); DestDC:=CreateCompatibleDC(SourceDC); Bhandle:=CreateCompatibleBitmap(SourceDC, RectWidth,RectHeight); SelectObject(DestDC,Bhandle); BitBlt(DestDC,0,0,RectWidth,RectHeight,SourceDC, LeftPos,TopPos,SRCCOPY); Bitmap:=TBitmap.Create; Bitmap.Handle:=BHandle; Stream := TMemoryStream.Create; Bitmap.SaveToStream(Stream); Stream.Free; try MyJpeg.Assign(Bitmap); MyJpeg.CompressionQuality:=70; MyJpeg.Compress; MyJpeg.SaveToFile('C:MyJPEGImage.JPG'); finally MyJpeg.Free; Bitmap.Free; DeleteDC(DestDC); ReleaseDC(Bhandle,SourceDC); end; end;
希望本文所述对大家的Delphi程序设计有所帮助。
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