Windows 2000/XP和2003等支持一種叫做"服務(wù)程序"的東西.程序作為服務(wù)啟動(dòng)有以下幾個(gè)好處:

(1)不用登陸進(jìn)系統(tǒng)即可運(yùn)行.
(2)具有SYSTEM特權(quán).所以你在進(jìn)程管理器里面是無(wú)法結(jié)束它的.

筆者在2003年為一公司開(kāi)發(fā)機(jī)頂盒項(xiàng)目的時(shí)候,曾經(jīng)寫(xiě)過(guò)課件上傳和媒體服務(wù),下面就介紹一下如何用Delphi7創(chuàng)建一個(gè)Service程序.
運(yùn)行Delphi7,選擇菜單File-->New-->Other--->Service Application.將生成一個(gè)服務(wù)程序的框架.將工程保存為ServiceDemo.dpr和Unit_Main.pas,然后回到主框架.我們注意到,Service有幾個(gè)屬性.其中以下幾個(gè)是我們比較常用的:

(1)DisplayName:服務(wù)的顯示名稱
(2)Name:服務(wù)名稱.

我們?cè)谶@里將DisplayName的值改為"Delphi服務(wù)演示程序",Name改為"DelphiService".編譯這個(gè)項(xiàng)目,將得到 ServiceDemo.exe.這已經(jīng)是一個(gè)服務(wù)程序了!進(jìn)入CMD模式,切換致工程所在目錄,運(yùn)行命令"ServiceDemo.exe /install",將提示服務(wù)安裝成功!然后"net start DelphiService"將啟動(dòng)這個(gè)服務(wù).進(jìn)入控制面版-->管理工具-->服務(wù),將顯示這個(gè)服務(wù)和當(dāng)前狀態(tài).不過(guò)這個(gè)服務(wù)現(xiàn)在什么也干不了,因?yàn)槲覀冞€沒(méi)有寫(xiě)代碼:)先"net stop DelphiService"停止再"ServiceDemo.exe /uninstall"刪除這個(gè)服務(wù).回到Delphi7的IDE.

我們的計(jì)劃是為這個(gè)服務(wù)添加一個(gè)主窗口,運(yùn)行后任務(wù)欄顯示程序的圖標(biāo),雙擊圖標(biāo)將顯示主窗口,上面有一個(gè)按鈕,點(diǎn)擊該按鈕將實(shí)現(xiàn)Ctrl+Alt+Del功能.

實(shí)際上,服務(wù)程序莫認(rèn)是工作于Winlogon桌面的,可以打開(kāi)控制面板,查看我們剛才那個(gè)服務(wù)的屬性-->登陸,其中"允許服務(wù)與桌面交互 "是不打鉤的.怎么辦?呵呵,回到IDE,注意那個(gè)布爾屬性:Interactive,當(dāng)這個(gè)屬性為T(mén)rue的時(shí)候,該服務(wù)程序就可以與桌面交互了.

File-->New-->Form為服務(wù)添加窗口FrmMain,單元保存為Unit_FrmMain,并且把這個(gè)窗口設(shè)置為手工創(chuàng)建.完成后的代碼如下:


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.


主窗口單元如下:

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服務(wù)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; // 執(zhí)行默認(rèn)動(dòng)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.


補(bǔ)充:
(1)關(guān)于更多服務(wù)程序的演示程序,請(qǐng)?jiān)L問(wèn)以下Url:http://www.torry.net/pages.php?id=226,上面包含了多個(gè)演示如何控制和管理系統(tǒng)服務(wù)的代碼.

(2)請(qǐng)切記:Windows實(shí)際上存在多個(gè)桌面.例如屏幕傳輸會(huì)出現(xiàn)白屏,可能有兩個(gè)原因:一是系統(tǒng)處于鎖定或未登陸桌面,二是處于屏幕保護(hù)桌面.這時(shí)候要將當(dāng)前桌面切換到該桌面才能抓屏.

(3)關(guān)于服務(wù)程序與桌面交互,還有種動(dòng)態(tài)切換方法.大概單元如下:
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.
更詳細(xì)的演示代碼請(qǐng)參看:http://www.torry.net/samples/samples/os/isarticle.zip

(4)關(guān)于安裝服務(wù)如何添加服務(wù)描述.有兩種方法:一是修改注冊(cè)表.服務(wù)的詳細(xì)信息都位于HKEY_LOCAL_MACHINE\SYSTEM\ ControlSet001\Services\下面,例如我們剛才那個(gè)服務(wù)就位于HKEY_LOCAL_MACHINE\SYSTEM\ ControlSet001\Services\DelphiService下.第二種方法就是先用QueryServiceConfig2函數(shù)獲取服務(wù)信息,然后ChangeServiceConfig2來(lái)改變描述.用Delphi實(shí)現(xiàn)的話,單元如下:

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(服務(wù)名稱,顯示名稱,描述信息,服務(wù)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);//連接服務(wù)數(shù)據(jù)庫(kù)
if hSCM=0 then Exit;//MessageBox(hHandle,Pchar(SysErrorMessage(GetLastError)),服務(wù)程序管理器,MB_ICONERROR+MB_TOPMOST);


hSCS:=CreateService( //創(chuàng)建服務(wù)函數(shù)
hSCM, // 服務(wù)控制管理句柄
Pchar(strServiceName), // 服務(wù)名稱
Pchar(strDisplayName), // 顯示的服務(wù)名稱
SERVICE_ALL_ACCESS, // 存取權(quán)利
SERVICE_WIN32_OWN_PROCESS or SERVICE_INTERACTIVE_PROCESS,// 服務(wù)類型 SERVICE_WIN32_SHARE_PROCESS
SERVICE_AUTO_START, // 啟動(dòng)類型
SERVICE_ERROR_IGNORE, // 錯(cuò)誤控制類型
Pchar(strFilename), // 服務(wù)程序
nil, // 組服務(wù)名稱
nil, // 組標(biāo)識(shí)
nil, // 依賴的服務(wù)
nil, // 啟動(dòng)服務(wù)帳號(hào)
nil); // 啟動(dòng)服務(wù)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 //啟動(dòng)服務(wù)
Exit; //MessageBox(hHandle,Pchar(SysErrorMessage(GetLastError)),Pchar(Application.Title),MB_ICONERROR+MB_TOPMOST);
CloseServiceHandle(hSCS); //關(guān)閉句柄
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)如何暴力關(guān)閉一個(gè)服務(wù)程序,實(shí)現(xiàn)我們以前那個(gè)"NT工具箱"的功能?首先,根據(jù)進(jìn)程名稱來(lái)殺死進(jìn)程是用以下函數(shù):
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;

但是對(duì)于服務(wù)程序,它會(huì)提示"拒絕訪問(wèn)".其實(shí)只要程序擁有Debug權(quán)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;//提升權(quán)限
KillTask(xxxx.exe);//關(guān)閉該服務(wù)程序.

?

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