unit1.~pas

新手学习Timer组件例程

unit Unit1;

interface

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

type
  TForm1 = class(TForm)
    Timer1: TTimer;
    Button1: TButton;
    Button2: TButton;
    Timer2: TTimer;
    Timer3: TTimer;
    Image1: TImage;
    Label1: TLabel;
    Label2: TLabel;
    Label3: TLabel;
    procedure Timer1Timer(Sender: TObject);
    procedure Button1Click(Sender: TObject);
    procedure Button2Click(Sender: TObject);
    procedure Timer2Timer(Sender: TObject);
    procedure FormCreate(Sender: TObject);
    procedure Timer3Timer(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  Form1: TForm1;

implementation

{$R *.dfm}

procedure TForm1.Timer1Timer(Sender: TObject);
begin
label1.Caption:=inttostr(strtoint(label1.Caption)+1);
end;

procedure TForm1.Button1Click(Sender: TObject);
begin
if not timer1.Enabled then
begin
timer1.Enabled:=true;

end;
if not timer2.Enabled then
begin
timer2.Enabled:=true;
end;
caption:='开始计时';
end;

procedure TForm1.Button2Click(Sender: TObject);
begin
if timer1.Enabled then
begin
timer1.Enabled:=false;

end;
if timer2.Enabled then
begin
timer2.Enabled:=false;
end;
caption:='停止计时';
end;

procedure TForm1.Timer2Timer(Sender: TObject);
begin
label2.Caption:=inttostr(strtoint(label2.Caption)+1);
end;

procedure TForm1.FormCreate(Sender: TObject);
begin
timer1.Interval:=1000;
timer2.Interval:=1;
timer3.Interval:=1000;

end;

procedure TForm1.Timer3Timer(Sender: TObject);
begin
label3.Caption:=datetimetostr(now());
end;

end.