The MQCOLUMNSET structure specifies the number of queue properties to be retrieved from each queue and their property identifiers. You can specify any number of queue properties, from a single queue property to all the properties provided by MSMQ. MSMQ can return any number of queue properties to the single query.
typedef struct  tagMQCOLUMNSET
{
    ULONG              cCol;
    PROPID _RPC_FAR   *aCol;
}   MQCOLUMNSET;
 
  Windows NT: Requires version 4.0 SP3 or later.
  Windows: Requires Windows 95 or later.
  Windows CE: Unsupported.
  Header: Declared in mq.h.
  Import Library: Use mqrt.lib.
  Unicode: Defined only as Unicode.