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Re: widget_list in IDL 5.1 [message #12028 is a reply to message #11934]

Mon, 15 June 1998 00:00

David Foster
Messages: 341
Registered: January 1996

Senior Member

jared gottlieb wrote:
>
> A variation on the theme:
>
> I'm working with the /NON-EXCLUSIVE variant of button-groups (IDL 5.1, DEC
> UNIX platform). When the user selects one of the buttons an event select
> occurs and I can get a 0/1 map of which buttons are currently selected.
> When the user toggles (de-selects) the button, there doesn't seem to be an
> event. There is an /NO_RELEASE for the call to CW_BGROUP that in the
> manual promises an event only when a button is selected. The opposite does
> not appear to be the default, that is a '/RELEASE'. Any ideas for a direct
> solution?

Just remove the /NO_RELEASE keyword. You are telling IDL to send
events only when buttons are selected, so no event is generated
when a button is released. This keyword is useful when you have
exclusive buttons, when you only want an event from the button
that was selected, and not from the one that was *unselected*.

Dave
--

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ~~~~~~
David S. Foster Univ. of California, San Diego
Programmer/Analyst Brain Image Analysis Laboratory
foster@bial1.ucsd.edu Department of Psychiatry
(619) 622-5892 8950 Via La Jolla Drive, Suite 2240
La Jolla, CA 92037
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ~~~~~~

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[Message index]

		widget_list in IDL 5.1 By: Jonathan Rogness on Tue, 09 June 1998 00:00
		Re: widget_list in IDL 5.1 By: David Foster on Mon, 15 June 1998 00:00
		Re: widget_list in IDL 5.1 By: NOSPAM.jared on Mon, 15 June 1998 00:00
		Re: widget_list in IDL 5.1 By: J.D. Smith on Fri, 12 June 1998 00:00
		Re: widget_list in IDL 5.1 By: menakkis on Thu, 11 June 1998 00:00
		Re: widget_list in IDL 5.1 By: davidf on Wed, 10 June 1998 00:00
		Re: widget_list in IDL 5.1 By: David Foster on Wed, 10 June 1998 00:00

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