If an entry with the specified resource ID and type already exists, overrides it with the specified context. The function returns a nonzero error code if an error has occurred and zero otherwise. Possible errors are (out of memory).
Because it is a return value, the data is a pointer. The function returns a nonzero error code if an error has occurred and zero otherwise. Possible errors are (context-not-found).
The function deletes the entry for the given resource ID and type from the data structure. This function returns the same error codes that returns if called with the same arguments. does not free the data whose address was saved.
The function creates a unique context type that may be used in subsequent calls to