The MQSORTSET structure specifies a multipart sort key. This structure is used in directory query operations to define a collection of sort keys and sort orders by which to sort the result set. See section 3.1.4.17.

 typedef struct tagMQSORTSET {
   [range(0,128)] unsigned long cCol;
   [size_is(cCol)] MQSORTKEY* aCol;
 } MQSORTSET;

cCol: MUST be set to the count of MQSORTKEY structures referenced by aCol.

aCol: A pointer to an array of MQSORTKEY structures.