intdlg.pas

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unit intdlg;

interface

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

type
  TFrmintdlg = class(TForm)
    Label1: TLabel;
    Edit1: TEdit;
    SpeedButton1: TSpeedButton;
    SpeedButton2: TSpeedButton;
    procedure FormShow(Sender: TObject);
    procedure SpeedButton1Click(Sender: TObject);
    procedure SpeedButton2Click(Sender: TObject);
    procedure Edit1KeyPress(Sender: TObject; var Key: Char);
  private
    { Private declarations }
  public
    { Public declarations }
    ReturnValue:integer;
  end;

var
  Frmintdlg: TFrmintdlg;

implementation

{$R *.dfm}

procedure TFrmintdlg.FormShow(Sender: TObject);
begin
  Edit1.Text :='0';
  ReturnValue:=0;
end;

procedure TFrmintdlg.SpeedButton1Click(Sender: TObject);
begin
  ReturnValue:=strtoint(Edit1.Text);
  if ReturnValue>0 then
    self.Close
  else
    application.MessageBox('输入值必须大于零！','提示',mb_ok);
end;

procedure TFrmintdlg.SpeedButton2Click(Sender: TObject);
begin
  self.Close;
end;

procedure TFrmintdlg.Edit1KeyPress(Sender: TObject; var Key: Char);
begin
  if not (key in ['0'..'9', #8, #13]) then
    begin
     key := #0;
    end;
end;

end.