3.17.4.1.66 MsgClass (Opnum 72)
The MsgClass method is received by the server in an RPC_REQUEST packet. In response, the server MUST set the represented Message.Class.
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[propput] HRESULT MsgClass( [in] long lMsgClass );
lMsgClass: A long integer that identifies the message type. This parameter corresponds to the MQMSGCLASS (section 2.2.2.9) enum.
Return Values: The method MUST return S_OK (0x00000000) on success or an implementation-specific error HRESULT on failure.
When processing this call, the server MUST follow these guidelines:
Set the represented Message.Class to the value that maps to the MQMSGCLASS enum contained in the lMsgClass input parameter.