Delphi 编写系统服务（服务控制线程：开始，暂停，继续，停止）

       打开Delphi 7，新建，选择Other->Service Application 修改属性中Name和DisplayName，Name是Service的名称，决定着进程的标识，DisplayName是显示在操作系统里的服务面板里的服务的名称。例如我们将Name修改为NoticeService。

      新建一个类，例如名字叫做TNoticeThread，继承自TThread，并重写protected过程Execute。在NoticeService的类定义中添加一个NoticeThread对象。

      找到属性的Events选项卡，分别添加OnStart，OnPause，OnContinue，OnStop事件，用这几个事件来控制NoticeThread线程的运行：

      代码如下：

unit ufrmMain;

interface

uses
  Windows, Messages, SysUtils, Classes, Graphics, Controls, SvcMgr, Dialogs;

type
  TNoticeThread = class(TThread)
  private

  protected
    procedure Execute; override;
  end;

type
  TNoticeService = class(TService)
    procedure ServiceStart(Sender: TService; var Started: Boolean);
    procedure ServiceStop(Sender: TService; var Stopped: Boolean);
    procedure ServicePause(Sender: TService; var Paused: Boolean);
    procedure ServiceContinue(Sender: TService; var Continued: Boolean);
  private
    NoticeThread: TNoticeThread;
  public
    function GetServiceController: TServiceController; override;
  end;

var
  NoticeService: TNoticeService;

implementation

{$R *.DFM}

procedure ServiceController(CtrlCode: DWord); stdcall;
begin
  NoticeService.Controller(CtrlCode);
end;

function TNoticeService.GetServiceController: TServiceController;
begin
  Result := ServiceController;
end;

procedure TNoticeService.ServiceStart(Sender: TService;
  var Started: Boolean);
begin
  NoticeThread := TNoticeThread.Create(False);
  Started := True;
end;

procedure TNoticeService.ServiceStop(Sender: TService;
  var Stopped: Boolean);
begin
  NoticeThread.Terminate;
  Stopped := True;
end;

procedure TNoticeService.ServicePause(Sender: TService;
  var Paused: Boolean);
begin
  NoticeThread.Suspend;
  Paused := True;
end;

procedure TNoticeService.ServiceContinue(Sender: TService;
  var Continued: Boolean);
begin
  NoticeThread.Resume;
  Continued := True;
end;

{ TNoticeThread }

procedure TNoticeThread.Execute;
begin
  inherited;

end;

end.