loginfrm.pas

结合读卡器使用。程序中有按迟到时间长短自动开罚单功能

unit Loginfrm;

interface

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

type
  TLoginForm = class(TForm)
    Panel1: TPanel;
    Label1: TLabel;
    Label2: TLabel;
    ComboBox1: TComboBox;
    Edit1: TEdit;
    BitBtn1: TBitBtn;
    BitBtn2: TBitBtn;
    procedure FormShow(Sender: TObject);
    procedure FormActivate(Sender: TObject);
    procedure Edit1KeyPress(Sender: TObject; var Key: Char);
    procedure ComboBox1Select(Sender: TObject);
  private
    
    { Private declarations }
  public
    { Public declarations }
  end;

var
  LoginForm: TLoginForm;
  
implementation

uses DataModule1;

{$R *.dfm}

procedure TLoginForm.FormShow(Sender: TObject);
begin
    GetComboBoxItem(ComboBox1);
end;

procedure TLoginForm.FormActivate(Sender: TObject);
begin
    try
       DM.Database1.Connected:=True;
    except
       MessageBox(Application.Handle,pchar(ErrConnect),'信息',MB_OK+MB_ICONERROR+MB_SYSTEMMODAL);
    end;
end;

procedure TLoginForm.Edit1KeyPress(Sender: TObject; var Key: Char);
begin
    if Key=#13 then Bitbtn1.Click;
end;

procedure TLoginForm.ComboBox1Select(Sender: TObject);
begin
     Edit1.SetFocus;
end;

end.