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  Paintbox1.Width := fPic.Graphic.Width;
  PaintBox1.Height := fPic.Graphic.Height;					

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  Paintbox1.Width := fPic.Graphic.Width [b] *2 [/b];
  PaintBox1.Height := fPic.Graphic.Height [b] *2 [/b];					

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unit Unit1;

interface

uses
  Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
  Dialogs, StdCtrls, ExtCtrls;

type
  TForm1 = class(TForm)
    Panel1: TPanel;
    PaintBox1: TPaintBox;
    procedure Button1Click(Sender: TObject);
    procedure FormCreate(Sender: TObject);
    procedure FormDestroy(Sender: TObject);
  private
    { Private-Deklarationen }
  public
    { Public-Deklarationen }
  end;

var
  Form1: TForm1;
  fPic:  TPicture;

implementation

{$R *.dfm}

procedure TForm1.Button1Click(Sender: TObject);
begin
  Paintbox1.Width := fPic.Graphic.Width*3;
  PaintBox1.Height := fPic.Graphic.Height*3;

  With Paintbox1.Canvas do begin
    Draw(paintbox1.Left,paintbox1.Top,fPic.Graphic);

    Pen.Color := clOlive;
    brush.Style := bsClear;
    Rectangle(paintbox1.Left,paintbox1.Top,paintbox1.Left + fPic.Graphic.Width,paintbox1.Top + fPic.Graphic.Height);
  end;
end;

procedure TForm1.FormCreate(Sender: TObject);
begin
  fPic := TPicture.Create;
  fPic.LoadFromFile('C:\Delphi\Projekte\vokabeln\bilder\BtnBack.bmp');

  panel1.DoubleBuffered := true;

end;

procedure TForm1.FormDestroy(Sender: TObject);
begin
  FreeAndNil(fPic);
end;

end.					

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  Paintbox1.Width := fPic.Width+2;
  PaintBox1.Height := fPic.Height+2;

  With Paintbox1.Canvas do begin
    Draw(1,1,fPic);

    Pen.Color := clOlive;
    brush.Style := bsClear;
    Rectangle(0,0,fPic.Width+1,fPic.Height+1);
  end;