PARM_REG Field - ulFlags

ulFlags (ULONG)

The following flags are used:

REGISTER_TGT_HNDLR

This handler is Target. Handler could be either source or target.
REGISTER_SRC_HNDLR
This handler is Source. Handler could be either source or target.
REGISTER_NONSTREAMING
Handler is non-streaming.

VALIDREGISTERFLAGS (REGISTER_TGT_HNDLR | REGISTER_SRC_HNDLR | REGISTER_NONSTREAMING)

SSMDD_CATEGORY
Category for ring 0 stream handler.
SMH_DEREGISTER
Function for ring 0 stream handler.

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