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How to control text that is allowed in a NSTextField control

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How to control text that is allowed in a NSTextField control

Subject: How to control text that is allowed in a NSTextField control
From: brian barrington <email@hidden>
Date: Tue, 21 Aug 2007 17:22:48 +0200

I want to be able to control the characters accepted by an NSTextField. Initially I need some way to limit character input to numbers (1-9, plus, minus, comma, dot). I'd like to know 2 ways of doing this:-

- static. If this feature is buried somewhere in Interface Builder that would be great. - dynamic i.e. at run-time I can programatically control characters input.

If anybody knows how to apply a regular expression as a mask that would be even better.

Thanks for your help.

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