Adds a state listener to the given domain.
- Parameters
-
| self | The domain to add the listener too. This must not be NULL. |
| listener | The listener to add to the domain. If this has already been added to the domain it will not be added a second time. This must not be NULL. |
- Returns
- boolean TRUE if the listener was added.
- Exceptions
-
| FALSE | is returned if the listener was unable to be added. |