The PROPID_QM_PATHNAME property specifies the MSMQ pathname of the computer.
To find the MSMQ pathname of a computer, pass PROPID_QM_PATHNAME to MQGetMachineProperties and examine its returned value. When calling MQGetMachineProperties, the type identifier of this property must be set to VT_NULL.
Note For dependent clients, MSMQ sets this property to the pathname of the client's server computer.