Delphi 编写系统服务

       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;interfaceuses  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.