本文實例講述了Delphi實現(xiàn)截屏存盤的方法。分享給大家供大家參考。具體分析如下：
該實例可實現(xiàn)截取屏幕，并保存為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;希望本文所述對大家的Delphi程序設(shè)計有所幫助。
新聞熱點
疑難解答
圖片精選
