Start and Stop services

Start and Stop services include the header file: # include <winsvc. h> the following uses Web services as an example:

#include <winsvc.h>
void CStartServiceDlg::OnBnClickedButton1()
{
    // Open the service management object
   SC_HANDLE hSC = ::OpenSCManager( NULL,
             NULL, GENERIC_EXECUTE);
   if( hSC == NULL)
   {
     TRACE( "open SCManager error");
     return;
   }

  // Open the WWW Service.
   SC_HANDLE hSvc = ::OpenService( hSC, "W3SVC",
     SERVICE_START | SERVICE_QUERY_STATUS | SERVICE_STOP);
   if( hSvc == NULL)
   {
     TRACE( "Open www erron。");
     ::CloseServiceHandle( hSC);
     return;
   }

  // Obtain the service status
   SERVICE_STATUS status;
   if( ::QueryServiceStatus( hSvc, &status) == FALSE)
   {
     TRACE( "Get Service state error。");
     ::CloseServiceHandle( hSvc);
     ::CloseServiceHandle( hSC);
     return;
   }

  // If it is in the stopped status, start the service; otherwise, stop the service.   if( status.dwCurrentState == SERVICE_RUNNING)
   {
    // Stop the service
     if( ::ControlService( hSvc, 

Service_control_stop, & Status) = false)
     {
       TRACE( "stop service error。");
       ::CloseServiceHandle( hSvc);
       ::CloseServiceHandle( hSC);
       return;
     }

    // Wait for the service to stop
     while( ::QueryServiceStatus( hSvc, &status) == TRUE)
     {
       ::Sleep( status.dwWaitHint);
       if( status.dwCurrentState == SERVICE_STOPPED)
       {
         AfxMessageBox( "stop success。");
         ::CloseServiceHandle( hSvc);
         ::CloseServiceHandle( hSC);
         return;
       }
     }
   }
   else if( status.dwCurrentState == SERVICE_STOPPED)
   {
    // Start the service
     if( ::StartService( hSvc, NULL, NULL) == FALSE)
     {
       TRACE( "start service error。");
       ::CloseServiceHandle( hSvc);
       ::CloseServiceHandle( hSC);
       return;
     }

    // Wait for the service to start
     while( ::QueryServiceStatus( hSvc, &status) == TRUE)
     {
       ::Sleep( status.dwWaitHint);
       if( status.dwCurrentState == SERVICE_RUNNING)
       {
         AfxMessageBox( "start success。");
         ::CloseServiceHandle( hSvc);
         ::CloseServiceHandle( hSC);
         return;
       }

}
   }

   TRACE( "start error。");
   ::CloseServiceHandle( hSvc);
   ::CloseServiceHandle( hSC);
   return;
}