Как запустить и остановить сервис (или получить его статус)

function ServiceStart(aMachine, aServiceName: string ): boolean;
// aMachine это UNC путь, либо локальный компьютер если пусто
var
  h_manager,h_svc: SC_Handle;
  svc_status: TServiceStatus;
  Temp: PChar;
  dwCheckPoint: DWord;
begin
  svc_status.dwCurrentState := 1;
  h_manager := OpenSCManager(PChar(aMachine), nil, SC_MANAGER_CONNECT);
  if h_manager > 0 then
  begin
    h_svc := OpenService(h_manager, PChar(aServiceName),
    SERVICE_START or SERVICE_QUERY_STATUS);
    if h_svc > 0 then
    begin
      temp := nil;
      if (StartService(h_svc,0,temp)) then
        if (QueryServiceStatus(h_svc,svc_status)) then
        begin
          while (SERVICE_RUNNING <> svc_status.dwCurrentState) do
          begin
            dwCheckPoint := svc_status.dwCheckPoint;
            Sleep(svc_status.dwWaitHint);
            if (not QueryServiceStatus(h_svc,svc_status)) then
              break;
            if (svc_status.dwCheckPoint < dwCheckPoint) then
            begin
              // QueryServiceStatus не увеличивает dwCheckPoint
              break;
            end;
          end;
        end;
      CloseServiceHandle(h_svc);
    end;
    CloseServiceHandle(h_manager);
  end;
  Result := SERVICE_RUNNING = svc_status.dwCurrentState;
end;


function ServiceStop(aMachine,aServiceName: string ): boolean;
// aMachine это UNC путь, либо локальный компьютер если пусто
var
  h_manager, h_svc: SC_Handle;
  svc_status: TServiceStatus;
  dwCheckPoint: DWord;
begin
  h_manager:=OpenSCManager(PChar(aMachine),nil, SC_MANAGER_CONNECT);
  if h_manager > 0 then
  begin
    h_svc := OpenService(h_manager,PChar(aServiceName),
    SERVICE_STOP or SERVICE_QUERY_STATUS);
    if h_svc > 0 then
    begin
      if(ControlService(h_svc,SERVICE_CONTROL_STOP, svc_status))then
      begin
        if(QueryServiceStatus(h_svc,svc_status))then
        begin
          while(SERVICE_STOPPED <> svc_status.dwCurrentState)do
          begin
            dwCheckPoint := svc_status.dwCheckPoint;
            Sleep(svc_status.dwWaitHint);
            if(not QueryServiceStatus(h_svc,svc_status))then
            begin
              // couldn't check status
              break;
            end;
            if(svc_status.dwCheckPoint < dwCheckPoint)then
              break;
          end;
        end;
      end;
      CloseServiceHandle(h_svc);
    end;
    CloseServiceHandle(h_manager);
  end;
  Result := SERVICE_STOPPED = svc_status.dwCurrentState;
end;

function ServiceGetStatus(sMachine, sService: string ): DWord;
var
  h_manager, h_service: SC_Handle;
  service_status: TServiceStatus;
  hStat: DWord;
begin
  hStat := 1;
  h_manager := OpenSCManager(PChar(sMachine) ,nil, SC_MANAGER_CONNECT);
  if h_manager > 0 then
  begin
    h_svc := OpenService(h_manager,PChar(sService), SERVICE_QUERY_STATUS);
    if h_svc > 0 then
    begin
      if(QueryServiceStatus(h_svc, service_status)) then
        hStat := service_status.dwCurrentState;
      CloseServiceHandle(h_svc);
    end;
    CloseServiceHandle(h_manager);
  end;
  Result := hStat;
end;