unit1.pas

使用delphi编写的身份验证程序

unit Unit1;

interface

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

type
  TForm1 = class(TForm)
    Label1: TLabel;
    Edit1: TEdit;
    Label2: TLabel;
    Edit2: TEdit;
    BitBtn1: TBitBtn;
    BitBtn2: TBitBtn;
    procedure BitBtn2Click(Sender: TObject);
    procedure FormCreate(Sender:TObject);
    procedure Edit1Change(Sender: TObject);
    procedure Edit2Change(Sender: TObject);
    procedure BitBtn1Click(Sender: TObject);
    procedure Edit1KeyPress(Sender:TObject;var Key:char);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  Form1: TForm1;

implementation

{$R *.dfm}

procedure TForm1.BitBtn2Click(Sender: TObject);
begin
close;
end;

procedure TForm1.FormCreate(Sender:TObject);
begin
Edit1.text:='';
Edit2.text:='';
BitBtn1.Enabled:=False;
end;

procedure TForm1.Edit1Change(Sender: TObject);
begin
if length(edit1.text)=6 then
form1.Focuscontrol(Edit2);
end;

procedure TForm1.Edit2Change(Sender: TObject);
begin
if (Edit2.text='123456')and (Edit1.text='950755')then
begin
bitbtn1.Enabled:=true;
form1.FocusControl(bitbtn1);
end;
end;

procedure TForm1.BitBtn1Click(Sender: TObject);
begin
showmessage('您通过了身份验证');
close;
end;

procedure TForm1.Edit1KeyPress(Sender:TObject;var Key:char);
begin
if not(key in['0'..'9',#8])then
begin key:=#0;
messagebeep(1);
end;
end;
end.