unit Unit1;

 

interface

 

uses

  Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,

  Dialogs, StdCtrls, ExtCtrls, jpeg;

 

type

  TForm1 = class(TForm)

    pnl1: TPanel;

    pnl2: TPanel;

    img1: TImage;

    img2: TImage;

    btn1: TButton;

    procedure btn1Click(Sender: TObject);

    procedure FormCreate(Sender: TObject);

  private

    { Private declarations }

  public

    { Public declarations }

  end;

 

var

  Form1: TForm1;

 

implementation

 

{$R *.dfm}

 

procedure TForm1.btn1Click(Sender: TObject);

   var

    DC : HDC;

    SaveIndex : HDC;

    Position: TPoint;

    Control : TWinControl ;

    Buf : TBitmap;

    w:integer;

begin

    Buf := TBitmap.Create();

    Buf.PixelFormat := pfDevice;

    Buf.Width := btn1.Width;

    Buf.Height := btn1.Height;

 

     Control:= btn1;

   if Control.Parent <> nil then

    begin

{$R-}

        DC := Buf.Canvas.Handle;

        SaveIndex := SaveDC(DC);

        GetViewportOrgEx(DC, Position);

        SetViewportOrgEx(DC, Position.X - Control.Left, Position.Y - Control.Top, nil);

        IntersectClipRect(DC, 0, 0, Control.Parent.ClientWidth, Control.Parent.ClientHeight);

        Control.Parent.Perform(WM_ERASEBKGND, DC, 0);

        Control.Parent.Perform(WM_PAINT, DC, 0);

        RestoreDC(DC, SaveIndex);

         w:=Buf.Width;

        self.img1.Picture.Graphic:=Buf;

{$R+}

    end;

end;

 

procedure TForm1.FormCreate(Sender: TObject);

begin

    self.btn1.Parent:=self.pnl1;

end;

 

end.