unit Unit2;

interface

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

type
  TForm2 = class(TForm)
    Edit1: TEdit;
    Button1: TButton;
    Label1: TLabel;
    Button2: TButton;
    procedure Edit1KeyPress(Sender: TObject; var Key: Char);
    procedure Button1Click(Sender: TObject);
    procedure Button2Click(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  Form2: TForm2;

implementation

uses Unit1;

{$R *.dfm}

procedure TForm2.Edit1KeyPress(Sender: TObject; var Key: Char);
begin
if not(Key in['1','2','3','4','5','6','7','8','9','0',chr(8)]) then Key:=chr(0);
end;

procedure TForm2.Button1Click(Sender: TObject);
begin
  if (Edit1.Text<>'') and (StrToInt(Edit1.Text)>2) and (StrToInt(Edit1.Text)<1001) then
    begin
    form1.knp:=StrToInt(Edit1.Text);
    form2.Close;
    end;
end;

procedure TForm2.Button2Click(Sender: TObject);
begin
  Form1.cancel:=true;
  form2.Close;
end;

end.