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unit Unit1;

interface

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

type
  TForm1 = class(TForm)
    Button1: TButton;
    OpenDialog1: TOpenDialog;
    procedure Button1Click(Sender: TObject);
  private
    { Private-Deklarationen }
  public
    { Public-Deklarationen }
  end;

var
  Form1: TForm1;

implementation

{$R *.DFM}

procedure TForm1.Button1Click(Sender: TObject);
var f:textfile;
    a:string[255];
begin
if opendialog1.execute then
begin
     a:=opendialog1.filename;
     assignfile(f,'config.cfg');
     rewrite(f);
     write(f,a);
     closefile(f);
end;
end;

end.