Observer (gb)

This class allows you to catch the events raised by an object before its main event observer gets them.

The observer object will raise the same events as the observed object, and so you will handle them with the same handlers.

If you cancel an event in the observer event handler, the main event observer of the observed object will never see it.

See the TableView control source code for an example: it is implemented by using this method.

Vlastnosti

Object	Return the object observed by the observer.
Tag	Returns or sets the observer tag.

Metoda

Detach

Detach the event observer from its object.