?? lock.pas
字號:
unit lock;
interface
uses
Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
Dialogs, DB, DBTables, StdCtrls, jpeg, ExtCtrls, Buttons, ADODB;
type
Tlock_frm = class(TForm)
Label1: TLabel;
user_Edit: TEdit;
Label2: TLabel;
Edit2: TEdit;
BitBtn1: TBitBtn;
BitBtn2: TBitBtn;
Image2: TImage;
ADOConnection1: TADOConnection;
ADOTable1: TADOTable;
DataSource1: TDataSource;
Label4: TLabel;
Image1: TImage;
Label5: TLabel;
procedure FormCreate(Sender: TObject);
procedure BitBtn1Click(Sender: TObject);
procedure BitBtn2Click(Sender: TObject);
procedure FormCloseQuery(Sender: TObject; var CanClose: Boolean);
private
{ Private declarations }
public
{ Public declarations }
end;
var
lock_frm: Tlock_frm;
i:integer;
implementation
uses LOGIN_U;
{$R *.dfm}
procedure checkpwd;
begin
if i>=3 then
begin
messagedlg('對不起,您輸入超過三次!',mtWarning,[mbok],0);
application.Terminate;
end;
end;
procedure Tlock_frm.FormCloseQuery(Sender: TObject; var CanClose: Boolean);
begin
if lock_frm.ModalResult<>mrOK then
begin
if Application.MessageBox('請確認是否退出本系統(tǒng)','提示信息',mb_iconquestion+ mb_YesNo)=id_yes then
application.Terminate
else
canclose:=false;
end;
end;
procedure Tlock_frm.FormCreate(Sender: TObject);
var
dbfilename,connstr:string;
begin
dbfilename:=extractfilepath(application.ExeName)+'data\sfsb.mdb';
connstr:='Provider=Microsoft.Jet.OLEDB.4.0;'+
'Data Source=%s;Persist Security Info=False;'+
'Jet OLEDB:Database Password=%s';
adoconnection1.ConnectionString:=format(connstr,[dbfilename,'tjz929']);
if datasource1.DataSet.State=dsinactive then datasource1.DataSet.Open;
label5.Caption:='此系統(tǒng)已被鎖定于:'+datetimetostr(now);
user_edit.Text:=userxm_v;
end;
procedure Tlock_frm.BitBtn1Click(Sender: TObject);
begin
checkpwd;
adotable1.Locate('userid',userid_v,[]);
if (edit2.text<>'') and (trim(adotable1.fieldbyname('password').asstring)=edit2.text) then
begin //密碼正確進入
lock_frm.ModalResult:=mrOK;
lock_frm.CloseModal;
//lock_frm.Free;
end
else
begin
if edit2.text<>'' then
begin
i:=i+1;
messagedlg('密碼錯誤,請重新輸入!',mtWarning,[mbok],0);
end;
end;
end;
procedure Tlock_frm.BitBtn2Click(Sender: TObject);
begin
lock_frm.Close;
end;
end.
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