把整个窗体保存为图片的方法

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.