Re: KVO/KVC compliance, signature for -validate<Key>: error:
Re: KVO/KVC compliance, signature for -validate<Key>: error:
- Subject: Re: KVO/KVC compliance, signature for -validate<Key>: error:
- From: mmalcolm crawford <email@hidden>
- Date: Thu, 1 Jan 2004 16:14:14 -0800
On Jan 1, 2004, at 3:45 PM, Don Briggs wrote:
Have I missed more complete documentation?
Perhaps:
<
http://developer.apple.com/documentation/Cocoa/Conceptual/
KeyValueCoding/Concepts/Validation.html>
What happens to the instance of NSError?
See the section: "Validation Methods and Memory Management".
How is it used?
How would I best intervene with the Controller Layer to, say, display
a sheet with information from the NSError that results when the user
supplies an invalid value?
That happens automatically if you check "Validates immediately" for a
binding.
mmalc
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