Re: Ctrl-click a button

[Lothar Kimmeringer]

Luc Van Bogaert wrote:

> I'm wondering how one could detect if a button (say a toolbar button)
> was clicked while the ctrl-key was held down. Is it possible to
> detect this modifier key in the actionPerformed() method of the
> action button itself?

I don't know (but other might) but if not, it should be possible
to add a KeyListener that gets this information independent from
the button being called. Setting an internal member in such a
case (and setting it back if the ctrl-key is released) should
allow you to "simulate" the modifier-information in actionPerformed.

Knowing if you speak of SWT, Swing or other GUI-frameworks
(e.g. GWT) might help answering that question as well ;-)

Regards, Lothar
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[Knute Johnson]

On 12/21/2009 10:15 AM, Luc Van Bogaert wrote:
> Hi,

>
> I'm wondering how one could detect if a button (say a toolbar button)
> was clicked while the ctrl-key was held down. Is it possible to
> detect this modifier key in the actionPerformed() method of the
> action button itself?
>

> Thanks,
>

I did this once by using a KeyListener that toggled a class variable
when the CTRL key was pressed. Then in the ActionListener I checked the
value of the variable. I also remember there was somebody else at the
time that posted an even better solution but I can't remember what it
was. I have no clue what you could search for to find it though.

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Knute Johnson
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[Roedy Green]

On 21 Dec 2009 18:15:47 GMT, Luc Van Bogaert <l...@rixhon.be> wrote,
quoted or indirectly quoted someone who said :

>I'm wondering how one could detect if a button (say a toolbar button)
>was clicked while the ctrl-key was held down. Is it possible to
>detect this modifier key in the actionPerformed() method of the
>action button itself?

see http://mindprod.com/products2.html#KEYPLAYER
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Roedy Green Canadian Mind Products
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[Fred]

On Dec 21, 10:58 am, Roedy Green <see_webs...@mindprod.com.invalid>
wrote:

> On 21 Dec 2009 18:15:47 GMT, Luc Van Bogaert <l...@rixhon.be> wrote,
> quoted or indirectly quoted someone who said :
>
> >I'm wondering how one could detect if a button (say a toolbar button)
> >was clicked while the ctrl-key was held down. Is it possible to
> >detect this modifier key in the actionPerformed() method of the
> >action button itself?
>
> seehttp://mindprod.com/products2.html#KEYPLAYER

The actionPerformed() method is passed an ActionEvent instance;
its getModifiers() method will tell all.
--
Fred K

[markspace]

Luc Van Bogaert wrote:
> Hi,
>

> I'm wondering how one could detect if a button (say a toolbar button)
> was clicked while the ctrl-key was held down. Is it possible to
> detect this modifier key in the actionPerformed() method of the
> action button itself?

Yes. As Fred said (he replied to Roedy, so I'm replying to you just to
make sure you don't miss it), call getModifiers() inside
actionPerformed() to access the control key state:

actionEvent.getModifiers() & ActionEvent.CTRL_MASK

<http://java.sun.com/docs/books/tutorial/uiswing/events/actionlistener.html>

[Knute Johnson]

Come to think of it, that was probably the better solution :-).

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Knute Johnson
email s/nospam/knute2010/