EOObserving

Adopted By:
EODelayedObserver
EOEditingContext

Declared in: EOControl/EOObserver.h

The EOObserving protocol declares the objectWillChange: method, used by observers to receive notifications that an object has changed. This message is sent by EOObserverCenter to all observers registered using its addObserver:forObject: method. See the EOObserverCenter class specification for more information.

Instance Methods

objectWillChange:

- (void)objectWillChange: (id)anObject

Informs the receiver that anObject's state is about to change. The receiver can record anObject's state, mark or record it as changed, and examine it later (such as at the end of the run loop) to see how it's changed.

Copyright © 1997, Apple Computer, Inc. All rights reserved.