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Re: State of non-exclusive button [message #26392 is a reply to message #26391]

Fri, 31 August 2001 09:56

David Fanning
Messages: 11724
Registered: August 2001

Senior Member

Ken Bowman (k-bowman@null.tamu.edu) writes:

> How do you get the state (checked or unchecked) of a non-exclusive
> (toggle) button?

This is simple. Wrap the non-exclusive base up
in an object widget and call the IS_CHECKED method. :-)

> According to the Reference Guide there is a SET_BUTTON keyword to
> WIDGET_CONTROL, but no GET_BUTTON keyword. The GET_VALUE keyword
> returns the value of the button *label*. I guess that is consistent
> with using WIDGET_BUTTON(id, VALUE = 'Button Label') to create the
> button, but it seems to me to confuse the notions of 'value' and
> 'label'.

I'm telling you. First it's spelling, and now it's
consistency. What do you guys want anyway!? Those of
us who bill by the hour know the value of "confusing
notions", I can tell you. :-)

I think you have to keep track of non-exclusive
buttons the same way you keep track of droplist
values: you have to have some kind of buttonState
variable that you store in some user value that is
easy to get to. Personally, I'd store it in the user
value of the non-exclusive base widget. Then every
button could access it (to change its state) by looking
for it in its parent widget. Or, you could just put
it in the info structure along with everything else
you need to run your program.

Cheers,

David

--
David W. Fanning, Ph.D.
Fanning Software Consulting
Phone: 970-221-0438, E-mail: david@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: State of non-exclusive button By: R.Bauer on Mon, 03 September 2001 01:11
		Re: State of non-exclusive button By: David Fanning on Fri, 31 August 2001 13:28
		Re: State of non-exclusive button By: Steve Hartmann on Fri, 31 August 2001 11:37
		Re: State of non-exclusive button By: K. Bowman on Fri, 31 August 2001 11:19
		Re: State of non-exclusive button By: David Fanning on Fri, 31 August 2001 09:56

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