ulCategory (ULONG) - input

Category of alert to register.

This value can be the core alert category or an extended alert category as defined below:

PRTALERT_CATEGORY_CORE - 0x00000001

Core alert category
PRTALERT_CATEGORY_EXTENDED - 0x0000D000
Beginning of the extended alert categories. Protocol converters should limit the category range to between 0x0000D000 and 0x0000DFFFF.
PRTALERT_CATEGORY_EXT_MAX - 0x0000DFFF
End of the extended alert categories.
If the protocol converter does not support the given category, ERROR_INVALID_CATEGORY(117) is returned.