pass.pas

支持多用户有不同的权限采用MDI界面由于没有打包

unit pass;

interface

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

type
  Tpasswordform = class(TForm)
    GroupBox1: TGroupBox;
    Label1: TLabel;
    ComboBox1: TComboBox;
    Label2: TLabel;
    Edit1: TEdit;
    BitBtn1: TBitBtn;
    BitBtn2: TBitBtn;
    Database1: TDatabase;
    Table1: TTable;
    Table2: TTable;
    procedure BitBtn1Click(Sender: TObject);
  private
  times:integer;
    { Private declarations }
  public
    { Public declarations }
  end;

var
  passwordform: Tpasswordform;

implementation

{$R *.DFM}

procedure Tpasswordform.BitBtn1Click(Sender: TObject);
var
   s,s2:string;
begin
times:=times+1;
s:=combobox1.Text;
s2:=edit1.text;
if times<=3 then
    begin
        if (s<>'系统管理员')  and (s<>'普通用户') then
         showmessage('你输入了无效的操作员账号')
        else
          begin

           if   (table1.FindKey([s])) and (table1.fieldbyname('password').asstring=s2)
           then
           begin
           table2.First;
           table2.edit ;
           table2.FieldByName('username').asstring:=s;
           table2.Post;
           modalresult:=mrok
           end
           else
           begin
              showmessage('您输入了错误的密码');
              edit1.text:='';

           end;



          end;
    end
else
   application.Terminate;

end;

end.