On Sun, 24 May 2009 13:30:30 -0500, Dietmar Kuttelwascher <[email protected]> said: >This is a newbie question, my apologies if it has been discussed in >the past. I haven't been programming on a Mac since the System 7 days >and trying to catch up with OS X and Cocoa... > >I have text field bound to an NSObjectController with an >NSNumberFormatter to ensure that there are only integer numbers >entered. Whenever I leave the field blank or enter invalid characters, >I get a very generic error message "Formatting Error". I'd like to >customize that error message with a hint for the user which values are >valid (similar to the message I get in the standard print dialog when >entering zero copies), but I haven't found a way to do so, except for, >perhaps, subclassing NSNumberFormatter. I had a look at - >control:didFailToFormatString:errorDescription:, but noticed that the >error description is not a mutable string, therefore I cannot pass >back a modified error message. Is there a way to customize the error >message without having to create a new subclass of NSNumberFormatter >for each field with a different format? > >On a related topic, if I set "Validates Immediately" on the binding of >that particular field, I was expecting to be stopped in my tracks as >soon as I enter, say, a letter instead of a number, but nothing >happens. It seems like the setting of the Validates Immediately flag >doesn't have any impact on the behavior. Am I missing something here?
This might help: http://www.cocoabuilder.com/archive/message/cocoa/2008/9/9/217770 m. -- matt neuburg, phd = [email protected], <http://www.tidbits.com/matt/> A fool + a tool + an autorelease pool = cool! AppleScript: the Definitive Guide - Second Edition! http://www.tidbits.com/matt/default.html#applescriptthings _______________________________________________ Cocoa-dev mailing list ([email protected]) 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 [email protected]
