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(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. 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: 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 {$R *.DFM} procedure ServiceController(CtrlCode: DWord); stdcall; begin DelphiService.Controller(CtrlCode); end; function TDelphiService.GetServiceController: TServiceController; begin Result := ServiceController; end; procedure TDelphiService.ServiceContinue(Sender: TService; var Continued: Boolean); begin while not Terminated do begin Sleep(10); ServiceThread.ProcessRequests(False); end; end; procedure TDelphiService.ServiceExecute(Sender: TService); begin while not Terminated do begin Sleep(10); ServiceThread.ProcessRequests(False); end; end; procedure TDelphiService.ServicePause(Sender: TService; var Paused: Boolean); begin Paused := True; end; procedure TDelphiService.ServiceShutdown(Sender: TService); begin gbCanClose := true; FrmMain.Free; Status := csStopped; ReportStatus(); end; procedure TDelphiService.ServiceStart(Sender: TService; var Started: Boolean); begin Started := True; Svcmgr.Application.CreateForm(TFrmMain, FrmMain); gbCanClose := False; FrmMain.Hide; end; procedure TDelphiService.ServiceStop(Sender: TService; var Stopped: Boolean); begin Stopped := True; gbCanClose := True; FrmMain.Free; end; end. 主窗口单元如下: unit Unit_FrmMain; interface uses Windows, Messages, SysUtils, Variants, Classes, ShellApi, Graphics, Controls, Forms, Dialogs, ExtCtrls, StdCtrls; const WM_TrayIcon = WM_USER + 1234; type TFrmMain = class(TForm) Timer1: TTimer; Button1: TButton; procedure FormCreate(Sender: TObject); procedure FormCloseQuery(Sender: TObject; var CanClose: Boolean); procedure FormDestroy(Sender: TObject); procedure Timer1Timer(Sender: TObject); procedure Button1Click(Sender: TObject); private { Private declarations } IconData: TNotifyIconData; procedure AddIconToTray; procedure DelIconFromTray; procedure TrayIconMessage(var Msg: TMessage); message WM_TrayIcon; procedure SysButtonMsg(var Msg: TMessage); message WM_SYSCOMMAND; public { Public declarations } end; var FrmMain: TFrmMain; gbCanClose: Boolean; implementation {$R *.dfm} procedure TFrmMain.FormCreate(Sender: TObject); begin FormStyle := fsStayOnTop; SetWindowLong(Application.Handle, GWL_EXSTYLE, WS_EX_TOOLWINDOW); 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. 补充: (1)关于更多服务程序的演示程序,请访问以下Url:http://www.torry.net/pages.php?id=226,上面包含了多个演示如何控制和管理系统服务的代码. (2)请切记:Windows实际上存在多个桌面.例如屏幕传输会出现白屏,可能有两个原因:一是系统处于锁定或未登陆桌面,二是处于屏幕保护桌面.这时候要将当前桌面切换到该桌面才能抓屏. (3)关于服务程序与桌面交互,还有种动态切换方法.大概单元如下: unit ServiceDesktop; interface function InitServiceDesktop: boolean; procedure DoneServiceDeskTop; implementation uses Windows, SysUtils; const DefaultWindowStation = WinSta0; DefaultDesktop = Default; var hwinstaSave: HWINSTA; hdeskSave: HDESK; hwinstaUser: HWINSTA; hdeskUser: HDESK; function InitServiceDesktop: boolean; var dwThreadId: DWORD; begin dwThreadId := GetCurrentThreadID; // Ensure connection to service window station and desktop, and // save their handles. hwinstaSave := GetProcessWindowStation; hdeskSave := GetThreadDesktop(dwThreadId); hwinstaUser := OpenWindowStation(DefaultWindowStation, FALSE, MAXIMUM_ALLOWED); if hwinstaUser = 0 then begin OutputDebugString(PChar(OpenWindowStation failed + SysErrorMessage(GetLastError))); Result := false; exit; end; if not SetProcessWindowStation(hwinstaUser) then begin OutputDebugString(SetProcessWindowStation failed); Result := false; exit; end; hdeskUser := OpenDesktop(DefaultDesktop, 0, FALSE, MAXIMUM_ALLOWED); if hdeskUser = 0 then begin OutputDebugString(OpenDesktop failed); SetProcessWindowStation(hwinstaSave); CloseWindowStation(hwinstaUser); Result := false; exit; end; Result := SetThreadDesktop(hdeskUser); if not Result then OutputDebugString(PChar(SetThreadDesktop + SysErrorMessage(GetLastError))); end; procedure DoneServiceDeskTop; begin // Restore window station and desktop. SetThreadDesktop(hdeskSave); SetProcessWindowStation(hwinstaSave); if hwinstaUser <> 0 then CloseWindowStation(hwinstaUser); if hdeskUser <> 0 then CloseDesktop(hdeskUser); end; initialization InitServiceDesktop; finalization DoneServiceDesktop; end. 更详细的演示代码请参看:http://www.torry.net/samples/samples/os/isarticle.zip (4)关于安装服务如何添加服务描述.有两种方法:一是修改注册表.服务的详细信息都位于HKEY_LOCAL_MACHINE\SYSTEM\ ControlSet001\Services\下面,例如我们刚才那个服务就位于HKEY_LOCAL_MACHINE\SYSTEM\ ControlSet001\Services\DelphiService下.第二种方法就是先用QueryServiceConfig2函数获取服务信息,然后ChangeServiceConfig2来改变描述.用Delphi实现的话,单元如下: 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. unit winntService; interface uses Windows,WinSvc,WinSvcEx; function InstallService(const strServiceName,strDisplayName,strDescription,strFilename: string):Boolean; //eg:InstallService(服务名称,显示名称,描述信息,服务文件); procedure UninstallService(strServiceName:string); implementation function StrLCopy(Dest: PChar; const Source: PChar; MaxLen: Cardinal): PChar; assembler; asm PUSH EDI PUSH ESI PUSH EBX MOV ESI,EAX MOV EDI,EDX MOV EBX,ECX XOR AL,AL TEST ECX,ECX JZ @@1 REPNE SCASB JNE @@1 INC ECX @@1: SUB EBX,ECX MOV EDI,ESI MOV ESI,EDX MOV EDX,EDI MOV ECX,EBX SHR ECX,2 REP MOVSD MOV ECX,EBX AND ECX,3 REP MOVSB STOSB MOV EAX,EDX POP EBX POP ESI POP EDI end; function StrPCopy(Dest: PChar; const Source: string): PChar; begin Result := StrLCopy(Dest, PChar(Source), Length(Source)); end; function InstallService(const strServiceName,strDisplayName,strDescription,strFilename: string):Boolean; var //ss : TServiceStatus; //psTemp : PChar; hSCM,hSCS:THandle; srvdesc : PServiceDescription; desc : string; //SrvType : DWord; lpServiceArgVectors:pchar; begin Result:=False; //psTemp := nil; //SrvType := SERVICE_WIN32_OWN_PROCESS and SERVICE_INTERACTIVE_PROCESS; hSCM:=OpenSCManager(nil,nil,SC_MANAGER_ALL_ACCESS);//连接服务数据库 if hSCM=0 then Exit;//MessageBox(hHandle,Pchar(SysErrorMessage(GetLastError)),服务程序管理器,MB_ICONERROR+MB_TOPMOST); hSCS:=CreateService( //创建服务函数 hSCM, // 服务控制管理句柄 Pchar(strServiceName), // 服务名称 Pchar(strDisplayName), // 显示的服务名称 SERVICE_ALL_ACCESS, // 存取权利 SERVICE_WIN32_OWN_PROCESS or SERVICE_INTERACTIVE_PROCESS,// 服务类型 SERVICE_WIN32_SHARE_PROCESS SERVICE_AUTO_START, // 启动类型 SERVICE_ERROR_IGNORE, // 错误控制类型 Pchar(strFilename), // 服务程序 nil, // 组服务名称 nil, // 组标识 nil, // 依赖的服务 nil, // 启动服务帐号 nil); // 启动服务口令 if hSCS=0 then Exit;//MessageBox(hHandle,Pchar(SysErrorMessage(GetLastError)),Pchar(Application.Title),MB_ICONERROR+MB_TOPMOST); if Assigned(ChangeServiceConfig2) then begin desc := Copy(strDescription,1,1024); GetMem(srvdesc,SizeOf(TServiceDescription)); GetMem(srvdesc^.lpDescription,Length(desc) + 1); try StrPCopy(srvdesc^.lpDescription, desc); ChangeServiceConfig2(hSCS,SERVICE_CONFIG_DESCRIPTION,srvdesc); finally FreeMem(srvdesc^.lpDescription); FreeMem(srvdesc); end; end; lpServiceArgVectors := nil; if not StartService(hSCS, 0, lpServiceArgVectors) then //启动服务 Exit; //MessageBox(hHandle,Pchar(SysErrorMessage(GetLastError)),Pchar(Application.Title),MB_ICONERROR+MB_TOPMOST); CloseServiceHandle(hSCS); //关闭句柄 Result:=True; end; procedure UninstallService(strServiceName:string); var SCManager: SC_HANDLE; Service: SC_HANDLE; Status: TServiceStatus; begin SCManager := OpenSCManager(nil, nil, SC_MANAGER_ALL_ACCESS); if SCManager = 0 then Exit; try Service := OpenService(SCManager, Pchar(strServiceName), SERVICE_ALL_ACCESS); ControlService(Service, SERVICE_CONTROL_STOP, Status); DeleteService(Service); CloseServiceHandle(Service); finally CloseServiceHandle(SCManager); end; end; end. (5)如何暴力关闭一个服务程序,实现我们以前那个"NT工具箱"的功能?首先,根据进程名称来杀死进程是用以下函数: uses Tlhelp32; function KillTask(ExeFileName: string): Integer; const PROCESS_TERMINATE = 01; var ContinueLoop: BOOL; FSnapshotHandle: THandle; FProcessEntry32: TProcessEntry32; begin Result := 0; FSnapshotHandle := CreateToolhelp32Snapshot(TH32CS_SNAPPROCESS, 0); FProcessEntry32.dwSize := SizeOf(FProcessEntry32); ContinueLoop := Process32First(FSnapshotHandle, FProcessEntry32); while Integer(ContinueLoop) <> 0 do begin if ((UpperCase(ExtractFileName(FProcessEntry32.szExeFile)) = UpperCase(ExeFileName)) or (UpperCase(FProcessEntry32.szExeFile) = UpperCase(ExeFileName))) then Result := Integer(TerminateProcess( OpenProcess(PROCESS_TERMINATE, BOOL(0), FProcessEntry32.th32ProcessID), 0)); ContinueLoop := Process32Next(FSnapshotHandle, FProcessEntry32); end; CloseHandle(FSnapshotHandle); end; 但是对于服务程序,它会提示"拒绝访问".其实只要程序拥有Debug权限即可: function EnableDebugPrivilege: Boolean; function EnablePrivilege(hToken: Cardinal; PrivName: string; bEnable: Boolean): Boolean; var TP: TOKEN_PRIVILEGES; Dummy: Cardinal; begin TP.PrivilegeCount := 1; LookupPrivilegeValue(nil, pchar(PrivName), TP.Privileges[0].Luid); if bEnable then TP.Privileges[0].Attributes := SE_PRIVILEGE_ENABLED else TP.Privileges[0].Attributes := 0; AdjustTokenPrivileges(hToken, False, TP, SizeOf(TP), nil, Dummy); Result := GetLastError = ERROR_SUCCESS; end; var hToken: Cardinal; begin OpenProcessToken(GetCurrentProcess, TOKEN_ADJUST_PRIVILEGES, hToken); result:=EnablePrivilege(hToken, SeDebugPrivilege, True); CloseHandle(hToken); end; 使用方法: EnableDebugPrivilege;//提升权限 KillTask(xxxx.exe);//关闭该服务程序. |
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