Runtime to start/stop another window sevice

Except to set the dependency of services in SCM(Service Control Manager). You have another way to make sure some services can run before your application (serivce).

Use StartService to start a Window Service

Please note as follow:

1. If the service already start, it will return FALSE.
2. The function will return if the Windows Service is in running status (maybe needs 30sec atmost) or failed.

For more detail, please refer MSDN. Refer the sample code.

 SC_HANDLE serviceControlManager = OpenSCManager(0, 0, SC_MANAGER_CONNECT);
 SC_HANDLE service;

 if (serviceControlManager)
  {
  service = OpenService(serviceControlManager,
         "SERVICE_NAME",
         SERVICE_START | SERVICE_QUERY_STATUS | DELETE);
// Make sure you have the privilege of SERVICE_START.

  if (service)
   {
   if (StartService(service, 0, NULL))
    {
    // Services already startup successes.
    }
   else
    {
    DWORD dwLastError = GetLastError();
    if (dwLastError == ERROR_SERVICE_ALREADY_RUNNING)
     {
     //Services already started
     }
    else
     {
     //Service can not start.
     hr = E_FAIL;
     return;
     }
    }
   }

Use ControlService to stop Windows Services

You may think it may have a function StopService to stop serivce. Unfortunately, you have use CotrolService to do that. Please refer the sample code for more detail.

SC_HANDLE serviceControlManager = OpenSCManager(0, 0, SC_MANAGER_CONNECT);
 SC_HANDLE service;

 if (serviceControlManager)
  {
  service = OpenService(serviceControlManager,
         "SERVICE_NAME",
         SERVICE_STOP | SERVICE_QUERY_STATUS | DELETE);
// Make sure you have the privilege of SERVICE_STOP.

  if (service)
   {
   SERVICE_STATUS serviceStatus;
   QueryServiceStatus( service, &serviceStatus );

   if (serviceStatus.dwCurrentState != SERVICE_STOPPED)
    {
    if (! ControlService(service,    // handle to service
          SERVICE_CONTROL_STOP,  // control value to send
          &serviceStatus) )  // address of status info
      {
      // ControlService failed 
      }
    }
   }
  } 

VC6相關問題