unit1.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 Unit1;

interface

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

type
  TForm1 = class(TForm)
    Button1: TButton;
    Button2: TButton;
    Label1: TLabel;
    Timer1: TTimer;
    Button3: TButton;
    procedure Button1Click(Sender: TObject);
    procedure Button2Click(Sender: TObject);
    procedure Timer1Timer(Sender: TObject);
    procedure Button3Click(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

  function RegisterServiceProcess(
    dwProcessID, dwType: Integer): Integer; stdcall; external 'KERNEL32.DLL';
var
  Form1: TForm1;

implementation

{$R *.DFM}

procedure TForm1.Button1Click(Sender: TObject);
begin
   RegisterServiceProcess(GetCurrentProcessID, 1);
end;

procedure TForm1.Button2Click(Sender: TObject);
begin
   RegisterServiceProcess(GetCurrentProcessID, 0);
end;

procedure TForm1.Timer1Timer(Sender: TObject);
begin
   timer1.Enabled:=false;
   show;
end;

procedure TForm1.Button3Click(Sender: TObject);
begin
   hide;
   timer1.Enabled:=true;
end;

end.