The handle to the connection that you want to start. This handle is the handle that is created and passed back to you by the MQCreateConnection() function.
When a connection is created it is in stopped mode. Until you call this function, messages are not delivered to any consumers. Call this function to start a connection or to restart a connection that has been stopped with the MQStopConnection() function. To create an asynchronous consumer, you could have the connection in stopped mode, and start or restart the connection after you have set up the asynchronous message consumer.