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.