# objectDidBeginEditing: This message should be sent to the receiver when `editor` has uncommitted changes that can affect the receiver. ``` - (void) objectDidBeginEditing:(id) editor; ``` ## See Also [Cocoa Bindings Programming Topics](https://developer.apple.com/library/archive/documentation/Cocoa/Conceptual/CocoaBindings/CocoaBindings.html#//apple_ref/doc/uid/10000167i) [`- (void) objectDidEndEditing:(id) editor;`](/documentation/ObjectiveC/NSObject-swift.class/objectDidEndEditing:) This message should be sent to the receiver when `editor` has finished editing a property belonging to the receiver. --- Copyright © 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)