bestimmte Tasten Sperren.

[Noobinator]

also mein Programm sieht wie folgt aus:

Delphi-Quellcode:

unit Unit1;

interface

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


type
    TForm1 = class(TForm)
    Button1: TButton;
    Edit1: TEdit;
    Label1: TLabel;
    procedure Button1Click(Sender: TObject);
    procedure FormCreate(Sender: TObject);




  private
    { Private-Deklarationen }
  public
     procedure FormVKKeyPress(Sender: TObject; var Key: Char);
  end;

var
  Form1: TForm1;

implementation

{$R *.DFM}

...



procedure TForm1.FormCreate(Sender: TObject);
begin
form1.onkeypress :=  FormVKKeyPress;
.....

end;


procedure TForm1.FormVKKeyPress(Sender: TObject; var Key: Char);
begin
  if Key = #13 then Key := #0;
  if not (Key in ['0'..'9', #8]) then Key := #0;
end;
end.

aber es funzt nicht... ich möchte nur die Tasten Backspace und 0-9 zulassen.
was ist falsch?