Re: JComboBox drop-down arrow disappears

From	Bent C Dalager <bcd@pvv.ntnu.no>
Newsgroups	comp.lang.java.gui
Subject	Re: JComboBox drop-down arrow disappears
Date	2011-11-02 09:41 +0000
Organization	Norwegian university of science and technology
Message-ID	<slrnjb242q.pve.bcd@microbel.pvv.ntnu.no> (permalink)
References	<d05844e4-ec76-45ca-bcf3-f3fdabfb3356@v33g2000prm.googlegroups.com>

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On 2011-11-01, Amandil <mazwolfe@gmail.com> wrote:
> Does anyone else have this problem? Is it documented anywhere? Calling
> removeAllItems() on a JComboBox caused the drop-down arrow to
> disappear. It did not reappear even after the JComboBox was
> repopulated.

From memory, this happens if you call removeAll() on the combo, which
causes the Container superclass to remove all the components that were
used to give the combobox its appearance. (Results may vary from one
PLAF to the next on this, don't know but it seems likely enough.)

You probably mistakenly called removeAll() when you were intending to
call removeAllItems(). They do very different things.

Bent.
-- 
Bent Dalager - bcd@pvv.org - http://www.pvv.org/~bcd
                                    powered by emacs

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JComboBox drop-down arrow disappears Amandil <mazwolfe@gmail.com> - 2011-11-01 08:40 -0700
  Re: JComboBox drop-down arrow disappears Daniel Pitts <newsgroup.nospam@virtualinfinity.net> - 2011-11-01 09:29 -0700
  Re: JComboBox drop-down arrow disappears "John B. Matthews" <nospam@nospam.invalid> - 2011-11-01 13:06 -0400
    Re: JComboBox drop-down arrow disappears Roedy Green <see_website@mindprod.com.invalid> - 2011-11-01 23:20 -0700
  Re: JComboBox drop-down arrow disappears Nigel Wade <nmw-news@ion.le.ac.uk> - 2011-11-01 17:31 +0000
    Re: JComboBox drop-down arrow disappears Daniel Pitts <newsgroup.nospam@virtualinfinity.net> - 2011-11-01 10:48 -0700
    Re: JComboBox drop-down arrow disappears Roedy Green <see_website@mindprod.com.invalid> - 2011-11-01 23:22 -0700
  Re: JComboBox drop-down arrow disappears Amandil <mazwolfe@gmail.com> - 2011-11-01 13:22 -0700
  Re: JComboBox drop-down arrow disappears Roedy Green <see_website@mindprod.com.invalid> - 2011-11-01 23:19 -0700
  Re: JComboBox drop-down arrow disappears Bent C Dalager <bcd@pvv.ntnu.no> - 2011-11-02 09:41 +0000
  Re: JComboBox drop-down arrow disappears "dp" <newsgroups@phagia.net> - 2011-11-06 12:14 +0000

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