Determine if there is the specified level of interest currently expressed for a given Interface on the Object.
If interfaceID is the Wildcard IID, then check for all interfaces on the Object. If interfaceID is NULL, then check for any interfaces on the given Object.
- Parameters
-
self | The Object. This must not be NULL. |
interfaceID | The Interface ID. This may be NULL, to indicate any interface on the specified object. |
level | The level of interest for which to check. Current interest at or above the specified level will give an affirmative result. |
- Return values
-
Zero | (FALSE) if the specified level of interest is not present for the given Interface on the Object. |
Non-Zero | (TRUE) if the specified level of interest is present for the given Interface on the Object. |