delphi创建具有托盘的服务程序（service）

Windows 2000/XP和2003等支持一种叫做"服务程序"的东西.程序作为服务启动有以下几个好处:

(1)不用登陆进系统即可运行.

(2)具有SYSTEM特权.所以你在进程管理器里面是无法结束它的.

笔者在2003年为一公司开发机顶盒项目的时候,曾经写过课件上传和媒体服务,下面就介绍一下如何用Delphi7创建一个Service程序.

运行Delphi7,选择菜单File-->New-->Other--->Service Application.将生成一个服务程序的框架.将工程保存为ServiceDemo.dpr和Unit_Main.pas,然后回到主框架.我们注意到,Service有几个属性.其中以下几个是我们比较常用的:

(1)DisplayName:服务的显示名称

(2)Name:服务名称.

我们在这里将DisplayName的值改为"Delphi服务演示程序",Name改为"DelphiService".编译这个项目,将得到ServiceDemo.exe.这已经是一个服务程序了!进入CMD模式,切换致工程所在目录,运行命令"ServiceDemo.exe /install",将提示服务安装成功!然后"net start DelphiService"将启动这个服务.进入控制面版-->管理工具-->服务,将显示这个服务和当前状态.不过这个服务现在什么也干不了,因为我们还没有写代码:)先"net
stop DelphiService"停止再"ServiceDemo.exe /uninstall"删除这个服务.回到Delphi7的IDE.

我们的计划是为这个服务添加一个主窗口,运行后任务栏显示程序的图标,双击图标将显示主窗口,上面有一个按钮,点击该按钮将实现Ctrl+Alt+Del功能.

实际上,服务程序莫认是工作于Winlogon桌面的,可以打开控制面板,查看我们刚才那个服务的属性-->登陆,其中"允许服务与桌面交互"是不打钩的.怎么办?呵呵,回到IDE,注意那个布尔属性:Interactive,当这个属性为True的时候,该服务程序就可以与桌面交互了.

File-->New-->Form为服务添加窗口FrmMain,单元保存为Unit_FrmMain,并且把这个窗口设置为手工创建.完成后的代码如下:

[delphi]
view plaincopyprint?

unit Unit_Main; interface uses Windows, Messages, SysUtils, Classes, Graphics, Controls, SvcMgr, Dialogs, Unit_FrmMain; type TDelphiService = class(TService) procedure ServiceContinue(Sender: TService; var Continued: Boolean); procedure ServiceExecute(Sender: TService); procedure ServicePause(Sender: TService; var Paused: Boolean); procedure ServiceShutdown(Sender: TService); procedure ServiceStart(Sender: TService; var Started: Boolean); procedure ServiceStop(Sender: TService; var Stopped: Boolean); private { Private declarations } public function GetServiceController: TServiceController; override; { Public declarations } end; var DelphiService: TDelphiService; FrmMain: TFrmMain; implementation {$R *.DFM} procedure ServiceController(CtrlCode: DWord); stdcall; begin DelphiService.Controller(CtrlCode); end; function TDelphiService.GetServiceController: TServiceController; begin Result := ServiceController; end; procedure TDelphiService.ServiceContinue(Sender: TService; var Continued: Boolean); begin while not Terminated do begin Sleep(10); ServiceThread.ProcessRequests(False); end; end; procedure TDelphiService.ServiceExecute(Sender: TService); begin while not Terminated do begin Sleep(10); ServiceThread.ProcessRequests(False); end; end; procedure TDelphiService.ServicePause(Sender: TService; var Paused: Boolean); begin Paused := True; end; procedure TDelphiService.ServiceShutdown(Sender: TService); begin gbCanClose := true; FrmMain.Free; Status := csStopped; ReportStatus(); end; procedure TDelphiService.ServiceStart(Sender: TService; var Started: Boolean); begin Started := True; Svcmgr.Application.CreateForm(TFrmMain, FrmMain); gbCanClose := False; FrmMain.Hide; end; procedure TDelphiService.ServiceStop(Sender: TService; var Stopped: Boolean); begin Stopped := True; gbCanClose := True; FrmMain.Free; end; end.

unit Unit_Main;

interface

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

type
TDelphiService = class(TService)
procedure ServiceContinue(Sender: TService; var Continued: Boolean);
procedure ServiceExecute(Sender: TService);
procedure ServicePause(Sender: TService; var Paused: Boolean);
procedure ServiceShutdown(Sender: TService);
procedure ServiceStart(Sender: TService; var Started: Boolean);
procedure ServiceStop(Sender: TService; var Stopped: Boolean);
private
{ Private declarations }
public
function GetServiceController: TServiceController; override;
{ Public declarations }
end;

var
DelphiService: TDelphiService;
FrmMain: TFrmMain;
implementation

{$R *.DFM}

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

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

procedure TDelphiService.ServiceContinue(Sender: TService;
var Continued: Boolean);
begin
while not Terminated do
begin
Sleep(10);
ServiceThread.ProcessRequests(False);
end;
end;

procedure TDelphiService.ServiceExecute(Sender: TService);
begin
while not Terminated do
begin
Sleep(10);
ServiceThread.ProcessRequests(False);
end;
end;

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

procedure TDelphiService.ServiceShutdown(Sender: TService);
begin
gbCanClose := true;
FrmMain.Free;
Status := csStopped;
ReportStatus();
end;

procedure TDelphiService.ServiceStart(Sender: TService;
var Started: Boolean);
begin
Started := True;
Svcmgr.Application.CreateForm(TFrmMain, FrmMain);
gbCanClose := False;
FrmMain.Hide;
end;

procedure TDelphiService.ServiceStop(Sender: TService;
var Stopped: Boolean);
begin
Stopped := True;
gbCanClose := True;
FrmMain.Free;
end;

end.

主窗口单元如下:

[delphi]
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unit Unit_FrmMain;

interface

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

const
WM_TrayIcon = WM_USER + 1234;
type
TFrmMain = class(TForm)
Timer1: TTimer;
Button1: TButton;
procedure FormCreate(Sender: TObject);
procedure FormCloseQuery(Sender: TObject; var CanClose: Boolean);
procedure FormDestroy(Sender: TObject);
procedure Timer1Timer(Sender: TObject);
procedure Button1Click(Sender: TObject);
private
{ Private declarations }
IconData: TNotifyIconData;
procedure AddIconToTray;
procedure DelIconFromTray;
procedure TrayIconMessage(var Msg: TMessage); message WM_TrayIcon;
procedure SysButtonMsg(var Msg: TMessage); message WM_SYSCOMMAND;
public
{ Public declarations }
end;

var
FrmMain: TFrmMain;
gbCanClose: Boolean;
implementation

{$R *.dfm}

procedure TFrmMain.FormCreate(Sender: TObject);
begin
FormStyle := fsStayOnTop; {窗口最前}
SetWindowLong(Application.Handle, GWL_EXSTYLE, WS_EX_TOOLWINDOW); {不在任务栏显示}
gbCanClose := False;
Timer1.Interval := 1000;
Timer1.Enabled := True;
end;

procedure TFrmMain.FormCloseQuery(Sender: TObject; var CanClose: Boolean);
begin
CanClose := gbCanClose;
if not CanClose then
begin
Hide;
end;
end;

procedure TFrmMain.FormDestroy(Sender: TObject);
begin
Timer1.Enabled := False;
DelIconFromTray;
end;

procedure TFrmMain.AddIconToTray;
begin
ZeroMemory(@IconData, SizeOf(TNotifyIconData));
IconData.cbSize := SizeOf(TNotifyIconData);
IconData.Wnd := Handle;
IconData.uID := 1;
IconData.uFlags := NIF_MESSAGE or NIF_ICON or NIF_TIP;
IconData.uCallbackMessage := WM_TrayIcon;
IconData.hIcon := Application.Icon.Handle;
IconData.szTip := 'Delphi服务演示程序';
Shell_NotifyIcon(NIM_ADD, @IconData);
end;

procedure TFrmMain.DelIconFromTray;
begin
Shell_NotifyIcon(NIM_DELETE, @IconData);
end;

procedure TFrmMain.SysButtonMsg(var Msg: TMessage);
begin
if (Msg.wParam = SC_CLOSE) or
(Msg.wParam = SC_MINIMIZE) then Hide
else inherited; // 执行默认动作
end;

procedure TFrmMain.TrayIconMessage(var Msg: TMessage);
begin
if (Msg.LParam = WM_LBUTTONDBLCLK) then Show();
end;

procedure TFrmMain.Timer1Timer(Sender: TObject);
begin
AddIconToTray;
end;

procedure SendHokKey;stdcall;
var
HDesk_WL: HDESK;
begin
HDesk_WL := OpenDesktop ('Winlogon', 0, False, DESKTOP_JOURNALPLAYBACK);
if (HDesk_WL <> 0) then
if (SetThreadDesktop (HDesk_WL) = True) then
PostMessage(HWND_BROADCAST, WM_HOTKEY, 0, MAKELONG (MOD_ALT or MOD_CONTROL, VK_DELETE));
end;

procedure TFrmMain.Button1Click(Sender: TObject);
var
dwThreadID : DWORD;
begin
CreateThread(nil, 0, @SendHokKey, nil, 0, dwThreadID);
end;

end.

program ServiceDemo;

uses
SvcMgr,
Unit_Main in 'Unit_Main.pas' {DelphiService: TService},
Unit_frmMain in 'Unit_frmMain.pas' {frmMain};

{$R *.RES}

begin
Application.Initialize;
Application.CreateForm(TDelphiService, DelphiService);
Application.Run;
end.

unit Unit_FrmMain;

interface

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

const
WM_TrayIcon = WM_USER + 1234;
type
TFrmMain = class(TForm)
Timer1: TTimer;
Button1: TButton;
procedure FormCreate(Sender: TObject);
procedure FormCloseQuery(Sender: TObject; var CanClose: Boolean);
procedure FormDestroy(Sender: TObject);
procedure Timer1Timer(Sender: TObject);
procedure Button1Click(Sender: TObject);
private
{ Private declarations }
IconData: TNotifyIconData;
procedure AddIconToTray;
procedure DelIconFromTray;
procedure TrayIconMessage(var Msg: TMessage); message WM_TrayIcon;
procedure SysButtonMsg(var Msg: TMessage); message WM_SYSCOMMAND;
public
{ Public declarations }
end;

var
FrmMain: TFrmMain;
gbCanClose: Boolean;
implementation

{$R *.dfm}

procedure TFrmMain.FormCreate(Sender: TObject);
begin
FormStyle := fsStayOnTop; {窗口最前}
SetWindowLong(Application.Handle, GWL_EXSTYLE, WS_EX_TOOLWINDOW); {不在任务栏显示}
gbCanClose := False;
Timer1.Interval := 1000;
Timer1.Enabled := True;
end;

procedure TFrmMain.FormCloseQuery(Sender: TObject; var CanClose: Boolean);
begin
CanClose := gbCanClose;
if not CanClose then
begin
Hide;
end;
end;

procedure TFrmMain.FormDestroy(Sender: TObject);
begin
Timer1.Enabled := False;
DelIconFromTray;
end;

procedure TFrmMain.AddIconToTray;
begin
ZeroMemory(@IconData, SizeOf(TNotifyIconData));
IconData.cbSize := SizeOf(TNotifyIconData);
IconData.Wnd := Handle;
IconData.uID := 1;
IconData.uFlags := NIF_MESSAGE or NIF_ICON or NIF_TIP;
IconData.uCallbackMessage := WM_TrayIcon;
IconData.hIcon := Application.Icon.Handle;
IconData.szTip := 'Delphi服务演示程序';
Shell_NotifyIcon(NIM_ADD, @IconData);
end;

procedure TFrmMain.DelIconFromTray;
begin
Shell_NotifyIcon(NIM_DELETE, @IconData);
end;

procedure TFrmMain.SysButtonMsg(var Msg: TMessage);
begin
if (Msg.wParam = SC_CLOSE) or
(Msg.wParam = SC_MINIMIZE) then Hide
else inherited; // 执行默认动作
end;

procedure TFrmMain.TrayIconMessage(var Msg: TMessage);
begin
if (Msg.LParam = WM_LBUTTONDBLCLK) then Show();
end;

procedure TFrmMain.Timer1Timer(Sender: TObject);
begin
AddIconToTray;
end;

procedure SendHokKey;stdcall;
var
HDesk_WL: HDESK;
begin
HDesk_WL := OpenDesktop ('Winlogon', 0, False, DESKTOP_JOURNALPLAYBACK);
if (HDesk_WL <> 0) then
if (SetThreadDesktop (HDesk_WL) = True) then
PostMessage(HWND_BROADCAST, WM_HOTKEY, 0, MAKELONG (MOD_ALT or MOD_CONTROL, VK_DELETE));
end;

procedure TFrmMain.Button1Click(Sender: TObject);
var
dwThreadID : DWORD;
begin
CreateThread(nil, 0, @SendHokKey, nil, 0, dwThreadID);
end;

end.

program ServiceDemo;

uses
SvcMgr,
Unit_Main in 'Unit_Main.pas' {DelphiService: TService},
Unit_frmMain in 'Unit_frmMain.pas' {frmMain};

{$R *.RES}

begin
Application.Initialize;
Application.CreateForm(TDelphiService, DelphiService);
Application.Run;
end.

窗体代码如下:

[delphi]
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object DelphiService: TDelphiService
OldCreateOrder = False
DisplayName = 'Delphi服务演示程序'
Interactive = True
OnContinue = ServiceContinue
OnExecute = ServiceExecute
OnPause = ServicePause
OnShutdown = ServiceShutdown
OnStart = ServiceStart
OnStop = ServiceStop
Left = 261
Top = 177
Height = 150
Width = 215
end

object frmMain: TfrmMain
Left = 192
Top = 107
Width = 696
Height = 480
Caption = '我的服务测试程序'
Color = clBtnFace
Font.Charset = DEFAULT_CHARSET
Font.Color = clWindowText
Font.Height = -11
Font.Name = 'MS Sans Serif'
Font.Style = []
OldCreateOrder = False
OnCloseQuery = FormCloseQuery
OnCreate = FormCreate
OnDestroy = FormDestroy
PixelsPerInch = 96
TextHeight = 13
object Button1: TButton
Left = 296
Top = 264
Width = 75
Height = 25
Caption = 'Button1'
TabOrder = 0
OnClick = Button1Click
end
object Timer1: TTimer
OnTimer = Timer1Timer
Left = 120
Top = 192
end
end

object DelphiService: TDelphiService
OldCreateOrder = False
DisplayName = 'Delphi服务演示程序'
Interactive = True
OnContinue = ServiceContinue
OnExecute = ServiceExecute
OnPause = ServicePause
OnShutdown = ServiceShutdown
OnStart = ServiceStart
OnStop = ServiceStop
Left = 261
Top = 177
Height = 150
Width = 215
end

object frmMain: TfrmMain
Left = 192
Top = 107
Width = 696
Height = 480
Caption = '我的服务测试程序'
Color = clBtnFace
Font.Charset = DEFAULT_CHARSET
Font.Color = clWindowText
Font.Height = -11
Font.Name = 'MS Sans Serif'
Font.Style = []
OldCreateOrder = False
OnCloseQuery = FormCloseQuery
OnCreate = FormCreate
OnDestroy = FormDestroy
PixelsPerInch = 96
TextHeight = 13
object Button1: TButton
Left = 296
Top = 264
Width = 75
Height = 25
Caption = 'Button1'
TabOrder = 0
OnClick = Button1Click
end
object Timer1: TTimer
OnTimer = Timer1Timer
Left = 120
Top = 192
end
end

如何加入自己服务程序的“描述”内容呢？

目前基本有两种方法：

1、修改注册表，在

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet001\Services下找到自己的服务名称键值，然后加入一个名为Description的字符串字段，字段内容就是描述的内容。

这种方法通过实验是有效的，但因为不是通过API实现，而是直接写注册表，不太清楚适用性如何，不同的系统不知是否通用。

2、可通过ChangeServiceConfig2函数实现对服务的描述的修改。网上的ChangeServiceConfig2函数举例都根本无法成功运行，通过摸索改进，现提供ChangeServiceConfig2的正确用法如下，可成功有效地修改服务程序的描述。

程序代码

var

sdBuf: SERVICE_DESCRIPTION;

hSCManager, ServiceHandle: SC_Handle;

begin

hSCManager := OpenSCManager(nil, SERVICES_ACTIVE_DATABASE, SC_MANAGER_ALL_Access);

if hSCManager<>0 then

try

ServiceHandle := OpenService(hSCManager, PChar(ShutDownMonService.Name), SERVICE_CHANGE_CONFIG);

if ServiceHandle<>0 then

try

sdBuf.lpDescription := '我们的描述写在这里。';

ChangeServiceConfig2(ServiceHandle, SERVICE_CONFIG_DESCRIPTION, @sdBuf);

finally

CloseServiceHandle(ServiceHandle);

end;

finally

CloseServiceHandle(hSCManager);

end;

end;

以上的代码建议加在Service的AfterInstall事件中，当服务安装成功后自动对描述进行修改。一次性即可。

注意需要引用WinSvc, WinSvcEx两个单元，其中WinSvcEx的内容如下

程序代码

unit WinSvcEx;

interface

uses Windows, WinSvc;

const

//

// Service config info levels

//

SERVICE_CONFIG_DESCRIPTION = 1;

SERVICE_CONFIG_FAILURE_ACTIONS = 2;

//

// DLL name of imported functions

//

AdvApiDLL = 'advapi32.dll';

type

//

// Service description string

//

PServiceDescriptionA = ^TServiceDescriptionA;

PServiceDescriptionW = ^TServiceDescriptionW;

PServiceDescription = PServiceDescriptionA;

{$EXTERNALSYM _SERVICE_DESCRIPTIONA}

_SERVICE_DESCRIPTIONA = record

lpDescription : PAnsiChar;

end;

{$EXTERNALSYM _SERVICE_DESCRIPTIONW}

_SERVICE_DESCRIPTIONW = record

lpDescription : PWideChar;

end;

{$EXTERNALSYM _SERVICE_DESCRIPTION}

_SERVICE_DESCRIPTION = _SERVICE_DESCRIPTIONA;

{$EXTERNALSYM SERVICE_DESCRIPTIONA}

SERVICE_DESCRIPTIONA = _SERVICE_DESCRIPTIONA;

{$EXTERNALSYM SERVICE_DESCRIPTIONW}

SERVICE_DESCRIPTIONW = _SERVICE_DESCRIPTIONW;

{$EXTERNALSYM SERVICE_DESCRIPTION}

SERVICE_DESCRIPTION = _SERVICE_DESCRIPTIONA;

TServiceDescriptionA = _SERVICE_DESCRIPTIONA;

TServiceDescriptionW = _SERVICE_DESCRIPTIONW;

TServiceDescription = TServiceDescriptionA;

//

// Actions to take on service failure

//

{$EXTERNALSYM _SC_ACTION_TYPE}

_SC_ACTION_TYPE = (SC_ACTION_NONE, SC_ACTION_RESTART, SC_ACTION_REBOOT, SC_ACTION_RUN_COMMAND);

{$EXTERNALSYM SC_ACTION_TYPE}

SC_ACTION_TYPE = _SC_ACTION_TYPE;

PServiceAction = ^TServiceAction;

{$EXTERNALSYM _SC_ACTION}

_SC_ACTION = record

aType : SC_ACTION_TYPE;

Delay : DWORD;

end;

{$EXTERNALSYM SC_ACTION}

SC_ACTION = _SC_ACTION;

TServiceAction = _SC_ACTION;

PServiceFailureActionsA = ^TServiceFailureActionsA;

PServiceFailureActionsW = ^TServiceFailureActionsW;

PServiceFailureActions = PServiceFailureActionsA;

{$EXTERNALSYM _SERVICE_FAILURE_ACTIONSA}

_SERVICE_FAILURE_ACTIONSA = record

dwResetPeriod : DWORD;

lpRebootMsg : LPSTR;

lpCommand : LPSTR;

cActions : DWORD;

lpsaActions : ^SC_ACTION;

end;

{$EXTERNALSYM _SERVICE_FAILURE_ACTIONSW}

_SERVICE_FAILURE_ACTIONSW = record

dwResetPeriod : DWORD;

lpRebootMsg : LPWSTR;

lpCommand : LPWSTR;

cActions : DWORD;

lpsaActions : ^SC_ACTION;

end;

{$EXTERNALSYM _SERVICE_FAILURE_ACTIONS}

_SERVICE_FAILURE_ACTIONS = _SERVICE_FAILURE_ACTIONSA;

{$EXTERNALSYM SERVICE_FAILURE_ACTIONSA}

SERVICE_FAILURE_ACTIONSA = _SERVICE_FAILURE_ACTIONSA;

{$EXTERNALSYM SERVICE_FAILURE_ACTIONSW}

SERVICE_FAILURE_ACTIONSW = _SERVICE_FAILURE_ACTIONSW;

{$EXTERNALSYM SERVICE_FAILURE_ACTIONS}

SERVICE_FAILURE_ACTIONS = _SERVICE_FAILURE_ACTIONSA;

TServiceFailureActionsA = _SERVICE_FAILURE_ACTIONSA;

TServiceFailureActionsW = _SERVICE_FAILURE_ACTIONSW;

TServiceFailureActions = TServiceFailureActionsA;

///////////////////////////////////////////////////////////////////////////

// API Function Prototypes

///////////////////////////////////////////////////////////////////////////

TQueryServiceConfig2 = function (hService : SC_HANDLE; dwInfoLevel : DWORD; lpBuffer : pointer;

cbBufSize : DWORD; var pcbBytesNeeded) : BOOL; stdcall;

TChangeServiceConfig2 = function (hService : SC_HANDLE; dwInfoLevel : DWORD; lpInfo : pointer) : BOOL; stdcall;

var

hDLL : THandle ;

LibLoaded : boolean ;

var

OSVersionInfo : TOSVersionInfo;

{$EXTERNALSYM QueryServiceConfig2A}

QueryServiceConfig2A : TQueryServiceConfig2;

{$EXTERNALSYM QueryServiceConfig2W}

QueryServiceConfig2W : TQueryServiceConfig2;

{$EXTERNALSYM QueryServiceConfig2}

QueryServiceConfig2 : TQueryServiceConfig2;

{$EXTERNALSYM ChangeServiceConfig2A}

ChangeServiceConfig2A : TChangeServiceConfig2;

{$EXTERNALSYM ChangeServiceConfig2W}

ChangeServiceConfig2W : TChangeServiceConfig2;

{$EXTERNALSYM ChangeServiceConfig2}

ChangeServiceConfig2 : TChangeServiceConfig2;

implementation

initialization

OSVersionInfo.dwOSVersionInfoSize := SizeOf(OSVersionInfo);

GetVersionEx(OSVersionInfo);

if (OSVersionInfo.dwPlatformId = VER_PLATFORM_WIN32_NT) and (OSVersionInfo.dwMajorVersion >= 5) then

begin

if hDLL = 0 then

begin

hDLL:=GetModuleHandle(AdvApiDLL);

LibLoaded := False;

if hDLL = 0 then

begin

hDLL := LoadLibrary(AdvApiDLL);

LibLoaded := True;

end;

end;

if hDLL <> 0 then

begin

@QueryServiceConfig2A := GetProcAddress(hDLL, 'QueryServiceConfig2A');

@QueryServiceConfig2W := GetProcAddress(hDLL, 'QueryServiceConfig2W');

@QueryServiceConfig2 := @QueryServiceConfig2A;

@ChangeServiceConfig2A := GetProcAddress(hDLL, 'ChangeServiceConfig2A');

@ChangeServiceConfig2W := GetProcAddress(hDLL, 'ChangeServiceConfig2W');

@ChangeServiceConfig2 := @ChangeServiceConfig2A;

end;

end

else

begin

@QueryServiceConfig2A := nil;

@QueryServiceConfig2W := nil;

@QueryServiceConfig2 := nil;

@ChangeServiceConfig2A := nil;

@ChangeServiceConfig2W := nil;

@ChangeServiceConfig2 := nil;

end;

finalization

if (hDLL <> 0) and LibLoaded then

FreeLibrary(hDLL);

end.

另外delphi 自带的Delphi带了个例子，在source/vcl目录上有个ScktSrvr.dpr

有GUI的Service程序，写Service一般是按照这个方法来做。这样调试起来更方便。