Re: NSTextField keyboard event

FROM : peiyuan
DATE : Thu Mar 06 04:57:43 2008

Big thanks.

The answer is the "
isPartialStringValid:proposedSelectedRange:originalString:originalSelectedRange:errorDescription".

Thank you again.

Pei-Yuan
@KCodes



--------------------------------------------------
From: "Aki Inoue" <<email_removed>>
Sent: Thursday, March 06, 2008 10:51 AM
To: "peiyuan" <<email_removed>>
Cc: "I. Savant" <<email_removed>>; "Cocoa"
<<email_removed>>
Subject: Re: NSTextField keyboard event

> 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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