SMH_LOCKMEM - Description

This message locks a memory object (available at Ring 3 only).

pParmIn (PPARM_LOCKM)

A pointer to a PARM_LOCKM data structure.

rc (ULONG)

Return codes indicating success or the type of failure:

NO_ERROR

Function performed.
ERROR_INVALID_FUNCTION
Invalid function requested.
ERROR_INVALID_BLOCK
Invalid pointer.

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