.. _library_events:

events

The objects event_registry, before_event_registry, and after_event_registry implement convenient predicates for registering before and after events.

The code makes use of the monitoring built-in protocol, which declares the two basic event handler predicates (before/3 and after/3). You will need to refer to this protocol in your objects if you want to use the super control structure (^^/1) with these predicates.

The monitor object implements more sophisticated event handling predicates.

API documentation

Open the `../../docs/library_index.html#events <../../docs/library_index.html#events>`__ link in a web browser.

Loading

To load all entities in this library, load the loader.lgt loader file:

::

| ?- logtalk_load(events(loader)).