SMH_DEREGISTER Return Value - rc
rc
(
ULONG
)
Return codes indicating success or the type of failure:
NO_ERROR
Function performed.
ERROR_INVALID_FUNCTION
Invalid function requested.
ERROR_HNDLR_NOT_FOUND
Stream-handler registration information was not found.
ERROR_INVALID_HNDLR_NAME
Invalid stream-handler name.
ERROR_INVALID_BLOCK
Invalid pointer.
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