Il giorno 01/nov/2011, alle ore 20.16, Quincey Morris ha scritto: > On Nov 1, 2011, at 11:54 , Livio Isaia wrote: > >> I created an IB plug-in with a subclass of NSView with an exposed bind of >> type NSNumber, and then I bind it to a MyNSImageView through an >> NSObjectController (this is made directly in IB). >> Now, everything works fine, except that when the method setSelectedIndex: >> from MyClass is called the bound NSImageView doesn't receive any change >> notification. >> Can anyone tell me why? > > Based on the information you've given us: > > You *exposed* (i.e. declared) a binding called "type", but you haven't > *implemented* that binding. > > So, when you establish the particular binding relationship from a MyClass > object to a MyNSImageView object, the automatic KVO portion of the binding > (changes to the MyNSImageView object get pushed back to the MyClass object) > works, but the part you're supposed to provide (pushing changes from the > MyClass object to the MyNSImageView object) doesn't. > > In other words, if you don't provide any code for the binding, it'll sort of > appear to work, but *in one direction only*. > >
Thank you for your answer, but i can't figure out which method(s) I must implement. I tried with some of them and still doesn't work (e.g. valueForKey:) Regards, livio._______________________________________________ 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
