{******************************************************************************}
{紅綠燈}
{02162323}
{ 龍濤 }
{******************************************************************************}
unit main;

interface

uses
  Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
  Dialogs, ExtCtrls, StdCtrls, Unit1, Unit2, Unit3, Unit4, jpeg;

type
  TForm1 = class(TForm)
    Image1: TImage;
    Image2: TImage;
    Image3: TImage;
    Shape1: TShape;
    Shape2: TShape;
    Button1: TButton;
    procedure Button1Click(Sender: TObject);
    procedure FormCreate(Sender: TObject);
    procedure FormClose(Sender: TObject; var Action: TCloseAction);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  Form1: TForm1;
  flag: boolean;
  thread: Tthread1;
  thread2: Tthread2;
  thread3, thread4: Tthread3;
  BUSStop: Tstop;

implementation

{$R *.dfm}
{卡車與小車 線程}

procedure TForm1.Button1Click(Sender: TObject);
begin
  thread := Tthread1.Create(true);
  thread2 := Tthread2.Create(true);
  BUSStop := Tstop.Create(true);
  thread.Resume;
  thread2.Resume;
  BUSStop.Resume;
  Button1.Caption:='汽車行使中...';
  Button1.Enabled:=false;

end;

{交通燈}

procedure TForm1.FormCreate(Sender: TObject);

begin
  flag := true;
  thread3 := Tthread3.Create(false, shape1, true);
  thread4 := Tthread3.Create(false, shape2, false);
  BUSStop := Tstop.Create(true);

end;

{釋放所有線程}
procedure TForm1.FormClose(Sender: TObject; var Action: TCloseAction);
begin
  thread.Terminate;
  thread2.Terminate;
  thread3.Terminate;
  thread4.Terminate;
  busstop.Terminate;
  thread.FreeOnTerminate:=true;
  thread2.FreeOnTerminate:=true;
  thread3.FreeOnTerminate:=true;
  thread4.FreeOnTerminate:=true;
  busstop.FreeOnTerminate:=true; 
end;


end.