问题来源: http://www.cnblogs.com/del/archive/2008/06/27/1197961.html#1237665
unit Unit1; interface uses Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms, Dialogs, StdCtrls; type TForm1 = class(TForm) Button1: TButton; procedure Button1Click(Sender: TObject); end; var Form1: TForm1; implementation {$R *.dfm} procedure TForm1.Button1Click(Sender: TObject); var bit: TBitmap; begin bit := TBitmap.Create; bit.Width := Width; bit.Height := Height; BitBlt(bit.Canvas.Handle, 0, 0, Width, Height, GetWindowDC(Handle), 0, 0, SRCCOPY); bit.SaveToFile('c:\temp\Form1.bmp'); bit.Free; end; end.