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Re: Widget Buttons - Radio and Checkbox control [message #19332]

Wed, 08 March 2000 00:00

davidf
Messages: 2866
Registered: September 1996

Senior Member

Robert S. Mallozzi (robert.mallozzi@msfc.nasa.gov) writes:

> Unfortunately I don't think there is any way to query
> the state of exclusive or non-exclusive buttons:
>
> WIDGET_CONTROL, buttonID, GET_BUTTON = state
> % Keyword GET_BUTTON not allowed in call to: WIDGET_CONTROL
> % Execution halted at: $MAIN$
>
> You will have to store the current state and drag it
> around in your program :-(

Ah, another perfect opportunity to write an object
compound widget. This is *exactly* why I wrote
FSC_DROPLIST. I was tired of not being able to get
the "value" of the droplist directly from the
droplist itself. Plus, I wanted to be able to
set the "selection" by the name or value of the
selection, rather than always having to translate
things through the "index" of the darn thing.

I think of object compound widgets as widgets the
way they *should* have been written. :-)

You can find FSC_DROPLIST here, if you want a model:

http://www.dfanning.com/programs/fsc_droplist.pro

Cheers,

David

--
David Fanning, Ph.D.
Fanning Software Consulting
Phone: 970-221-0438 E-Mail: davidf@dfanning.com
Coyote's Guide to IDL Programming: http://www.dfanning.com/
Toll-Free IDL Book Orders: 1-888-461-0155

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[Message index]

		Re: Widget Buttons - Radio and Checkbox control By: davidf on Wed, 08 March 2000 00:00
		Re: Widget Buttons - Radio and Checkbox control By: robert.mallozzi on Wed, 08 March 2000 00:00
		Re: Widget Buttons - Radio and Checkbox control By: Ben Tupper on Wed, 08 March 2000 00:00
		Re: Widget Buttons - Radio and Checkbox control By: davidf on Wed, 08 March 2000 00:00

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