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Re: widget [message #22357 is a reply to message #21375]

Mon, 06 November 2000 00:00

davidf
Messages: 2866
Registered: September 1996

Senior Member

Jean Marc Delvit (delvit@onecert.fr) writes:

> How to get a value from a widget box and not from the prompt in IDL?

You need to make what I call a "modal dialog widget".
The main trick (there are several) is to store the information
you want to return somewhere outside the program itself.
This is almost always a pointer location.

The program is written as a function and is written so
that the program stops or blocks at the XMANAGER call
until the widgets are destroyed. At that time the information
collected and stored in the pointer location is retrieved
and returned to the user as the result of the function.

There is an entire chapter of my book devoted to this
subject (if you can find one), or you can look at any
number of programs on my web page. Perhaps a good place
to start is with PICKCOLORNAME:

IDL> color = PickColorName('White')

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]

		widgets By: Stuart Colley on Fri, 18 August 2000 00:00
		Re: widget By: davidf on Mon, 06 November 2000 00:00
		Re: widget By: Pavel A. Romashkin on Mon, 06 November 2000 00:00

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