Look at http://developer.apple.com/documentation/Cocoa/Reference/Foundation/Classes/NSFormatter_Class/Reference/Reference.html#/
/apple_ref/occ/instm/NSFormatter/
isPartialStringValid:proposedSelectedRange:originalString:originalSelectedRange:errorDescription
:
Aki
On 2008/03/05, at 17:34, peiyuan wrote:
Not exactly.
Can NSFormatter monitor user's key input?
I don't find any docs about monitoring user input in NSFormatter.
I supposed that what the NSFormatter does is after you finish
editing, it would change the content.
This is not the way I want. I want a real time feedback, that is,
even user press a number key, the textfield will not show the number
at all (without leaving the focus of the textfield).
Pei-Yuan
I have a window which contains several NSTextField. In these
NSTextField, I want that when a user presses a key which is not a
number ( 0-9), the active NSTextField will not accept the key
input (that is, it does nothing).
This looks like a job for NSFormatter ...
--
I.S.
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