Hi, I want to constrain an NSTextField to float values greater than zero, so I connected an NSNumberFormatter in Interface Builder. Now the user can enter invalid text (eg, "1a", "-2") but it beeps when you try to leave the field. That may be okay.
Now I'd like to disable other parts of the UI when the field is invalid. I connected a delegate to the NSTextField, and implemented `controlTextDidChange:`, but I don't know how to check the validity from within that method. I get some strange behavior when I call textField.doubleValue, or even textField.stringValue, from inside controlTextDidChange. It causes the textfield to behave differently -- instead of allowing invalid text and beeping later, it erases the invalid text as soon as you type it. So first question: why is that happening? What is getting called by `textField.whateverValue` to change the field? Second question: how to I ask the NSNumberFormatter about the validity of the field as the field changes? I'd call its `getObjectValue...` method but I can seem to get the field's string value in `controlTextDidChange:`, without changing the behavior as described above. thanks, Rob _______________________________________________ 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: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
