MQDLTMH - Delete message handle
If the message handle was created using MQHC\_UNASSOCIATED\_HCONN then a valid connection must be established on the thread deleting the message handle, otherwise the call fails with MQRC\_CONNECTION\_BROKEN.
If the message handle was created using MQHC\_UNASSOCIATED\_HCONN then a valid connection must be established on the thread deleting the message handle, otherwise the call fails with MQRC\_CONNECTION\_BROKEN.