AtkStateSet* atk_state_set_xor_sets ( AtkStateSet* set, AtkStateSet* compare_set )
Constructs the exclusive-or of the two sets, returning
NULL is empty.
The set returned by this operation contains the states in exactly
one of the two sets.
|The data is owned by the caller of the function.|
|The caller of the method takes ownership of the data, and is responsible for freeing it.|