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help changing first responder - Mac Programming

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    Default help changing first responder

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    Jamal Bernhard Guest
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    Default Re: help changing first responder

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    Michael Ash Guest
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    Default Re: help changing first responder

    In article <jamalbspambegone-E85813.02581916082003news.sf.sbcglobal.net>,
    Jamal Bernhard <jamalbspambegonepacbell.goawayspam.net> wrote:
    >If the user edits a text field and the value is invalid, I want to pop
    >up an alert, restore the previous value, and keep the field as first
    >responder. I can do the first two just fine in the text field action,
    >but I can't figure out how to stop first responder from changing.
    Your code to revert to the original value should be put into
    the 'textShouldEndEditing:' delegate for the text field or
    handled via the default code for it. This automatically
    handles cases where the new text is not acceptable for that
    field. See 'NSTextField' for doentation.

    Note that reverting to the earlier version of the text if the
    new text is unacceptable is /not/ the Macintosh way. You're
    meant to leave the new text exactly the way it is so that the
    user can modify it further. If they decide they want to
    revert to the original text they can use the 'Undo' menu item
    all by themselves.


    Simon Slavin Guest

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