判断服务状态启动停止

static void RestartHostServer()
{
	 
	// 打开服务管理对象
	SC_HANDLE hSC = ::OpenSCManager( NULL, 
		NULL, GENERIC_EXECUTE);
	if( hSC == NULL)
	{
 
		return;
	}
	// 打开ProxyServer服务。
	SC_HANDLE hSvc = ::OpenService( hSC, "HostMonitorService",
		SERVICE_START | SERVICE_QUERY_STATUS | SERVICE_STOP);
	if( hSvc == NULL)
	{
	 
		::CloseServiceHandle( hSC);
		return;
	}
	// 获得服务的状态
	SERVICE_STATUS status;
	if( ::QueryServiceStatus( hSvc, &status) == FALSE)
	{
		::CloseServiceHandle( hSvc);
		::CloseServiceHandle( hSC);
 
		return;
	}
	//如果处于停止状态则启动服务，否则停止服务。
	if( status.dwCurrentState == SERVICE_RUNNING)
	{
		// 停止服务
		if( ::ControlService( hSvc, 
			SERVICE_CONTROL_STOP, &status) == FALSE)
		{ 
			::CloseServiceHandle( hSvc);
			::CloseServiceHandle( hSC);
			return;
		}
		// 等待服务停止
		while( ::QueryServiceStatus( hSvc, &status) == TRUE)
		{
			::Sleep( status.dwWaitHint);
			if( status.dwCurrentState == SERVICE_STOPPED)
			{
		 ;
				break;
			}
		}
	}
	if( status.dwCurrentState == SERVICE_STOPPED)
	{
		// 启动服务
		if( ::StartService( hSvc, NULL, NULL) == FALSE)
		{
		 
			::CloseServiceHandle( hSvc);
			::CloseServiceHandle( hSC);
			return;
		}
		// 等待服务启动
		while( ::QueryServiceStatus( hSvc, &status) == TRUE)
		{
			::Sleep( status.dwWaitHint);
			if( status.dwCurrentState == SERVICE_RUNNING)
			{
		 
				break;
			}
		}
	}
	::CloseServiceHandle( hSvc);
	::CloseServiceHandle( hSC);
	return;
}