test.pas

在delphi中实现windows核心编程.原书光盘代码核心编程.原书光盘代码

unit Test;

interface

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

type
  TForm1 = class(TForm)
    Button1: TButton;
    Button3: TButton;
    Edit1: TEdit;
    Label1: TLabel;
    procedure Button1Click(Sender: TObject);
    procedure Button3Click(Sender: TObject);
    procedure FormDestroy(Sender: TObject);
  private
    { Private declarations }
    MyThread1 : TFileSysNotifyThread;
  public
    { Public declarations }
  end;

var
  Form1: TForm1;

implementation

{$R *.DFM}

procedure TForm1.Button1Click (Sender: TObject);
begin
    if MyThread1 = Nil then
        MyThread1 := TFileSysNotifyThread.Create (edit1.text, File_Notify_Change_File_Name or File_Notify_Change_Dir_Name, MyThread1)
    else ShowMessage ('线程正在运行');
end;

procedure TForm1.Button3Click (Sender: TObject);
begin
    if MyThread1 <> nil then
       MyThread1.Terminate
    else ShowMessage ('线程未运行');
end;

procedure TForm1.FormDestroy (Sender: TObject);
begin
    if MyThread1 <> Nil then
    begin
        MyThread1.Terminate;
        MyThread1.WaitFor;
    end;
end;

end.