On Sep 7, 2011, at 5:58 PM, vade wrote: > I have an NSWindow, which my app controller is observing the value of > @"visible" keypath, with the following line > > [previewWindow addObserver:self forKeyPath:@"visible" > options:NSKeyValueObservingOptionNew context:NULL]; >
How did you determine that was a valid key path to observe? (That is, that the property at the end of the key path - and all intermediate keys - supports KVO?) In general you can't rely on any arbitrary property, especially of a user interface component like an NSWindow or NSView, supporting KVO. Instead you should use the notifications the component makes available explicitly for notifying observers of interesting happenings. -- Chris _______________________________________________ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
