一个定时器相关的简单例子 回复 "Timer008" 的问题

问题来源: http://www.cnblogs.com/del/archive/2008/07/09/1073218.html#1249648

---

代码文件:

---

unit Unit1;

interface

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

type
  TForm1 = class(TForm)
    Button1: TButton;
    Timer1: TTimer;
    procedure FormCreate(Sender: TObject);
    procedure Button1Click(Sender: TObject);
    procedure Timer1Timer(Sender: TObject);
   end;

var
  Form1: TForm1;

implementation

{$R *.dfm}

procedure TForm1.FormCreate(Sender: TObject);
begin
  Timer1.Interval := 15000; {定时器每 15 秒执行一次}
  Timer1.Enabled := False;  {定时器默认是直接启动的, 先关闭它}
end;

procedure TForm1.Button1Click(Sender: TObject);
begin
  {启动定时器}
  Timer1.Enabled := True;
  {点击按钮是什么功能呢? 譬如是让按钮标题自动计数}
  Button1.Caption := IntToStr(StrToIntDef(Button1.Caption, 0) + 1);
end;

{定时去执行 Button1Click}
procedure TForm1.Timer1Timer(Sender: TObject);
begin
  Button1.Click;
end;

end.

窗体文件:

---

object Form1: TForm1
  Left = 0
  Top = 0
  Caption = 'Form1'
  ClientHeight = 206
  ClientWidth = 339
  Color = clBtnFace
  Font.Charset = DEFAULT_CHARSET
  Font.Color = clWindowText
  Font.Height = -11
  Font.Name = 'Tahoma'
  Font.Style = []
  OldCreateOrder = False
  OnCreate = FormCreate
  PixelsPerInch = 96
  TextHeight = 13
  object Button1: TButton
    Left = 136
    Top = 112
    Width = 75
    Height = 25
    Caption = 'Button1'
    TabOrder = 0
    OnClick = Button1Click
  end
  object Timer1: TTimer
    OnTimer = Timer1Timer
    Left = 160
    Top = 80
  end
end