userlogin.~pas

结于初学者来说这对数据库是一个很好的例子

unit userlogin;

interface

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

type
  TForm7 = class(TForm)
    Panel1: TPanel;
    Edit1: TEdit;
    Label1: TLabel;
    Label2: TLabel;
    Label3: TLabel;
    Edit2: TEdit;
    Button1: TButton;
    Button2: TButton;
    procedure Button2Click(Sender: TObject);
    procedure Button1Click(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  Form7: TForm7;

implementation

uses main;

{$R *.dfm}

procedure TForm7.Button2Click(Sender: TObject);
begin
      if MessageBox(0,PChar('确实要退出系统'),'退出系统',MB_ICONQUESTION or MB_YESNO)=IDNO then
    Abort;
end;

procedure TForm7.Button1Click(Sender: TObject);
begin
  Form1.show;
  Form1.Free;
  Form7.close;
end;

end.