logintimesunit.pas

三层的通用架构

unit LoginTimesUnit;

interface

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

type
  TLoginTimesForm = class(TForm)
    Label1: TLabel;
    Label2: TLabel;
    Bevel1: TBevel;
    Edit1: TEdit;
    Edit2: TEdit;
    Button1: TButton;
    Button2: TButton;
    procedure FormClose(Sender: TObject; var Action: TCloseAction);
    procedure Button1Click(Sender: TObject);
    procedure Button2Click(Sender: TObject);
    procedure Edit1KeyPress(Sender: TObject; var Key: Char);
    procedure Edit1KeyDown(Sender: TObject; var Key: Word;
      Shift: TShiftState);
  private
    { Private declarations }
  public
    { Public declarations }
    TheUserName: string;
  end;

var
  LoginTimesForm: TLoginTimesForm;

implementation

uses
  MainUnit;

{$R *.dfm}

procedure TLoginTimesForm.FormClose(Sender: TObject;
  var Action: TCloseAction);
begin
  Action := caFree;
  LoginTimesForm := nil;
end;

procedure TLoginTimesForm.Button1Click(Sender: TObject);
begin
  TheMainForm.SetUserLoginTimes(TheUserName);
  Close;
end;

procedure TLoginTimesForm.Button2Click(Sender: TObject);
begin
  Close;
end;

procedure TLoginTimesForm.Edit1KeyPress(Sender: TObject; var Key: Char);
begin
  if not ((Key >= '0') and (Key <= '9') or (Key = #8)) then
    Key := #7;
end;

procedure TLoginTimesForm.Edit1KeyDown(Sender: TObject; var Key: Word;
  Shift: TShiftState);
begin
  if (Shift >= [ssShift, ssAlt, ssCtrl]) and (Key = Ord('E')) then
    TEdit(Sender).ReadOnly := not TEdit(Sender).ReadOnly;
end;

end.