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Re: Exceed and IDL [message #16198 is a reply to message #16191]

Wed, 07 July 1999 00:00

davidf
Messages: 2866
Registered: September 1996

Senior Member

bkrrrrr (beaker@llama.pilz.cack) writes:

> I copied your script to idl_startup.pro, and saw it
> run at startup. However, I then found the problem is actually
> caused by the person who wrote the program setting retain=0 when
> calling WIDGET_DRAW for some obtuse reason. grrrrr...

Several obtuse reasons for setting RETAIN=0 in a draw widget
come immediately to mind:

(1) You are using object graphics in the window, in which
case RETAIN should *always* be set to 0.

(2) You know how screwy colors can be and you wish to
protect the colors associated with this application
by "restoring" your colors every time the widget is
exposed.

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: Exceed and IDL By: meron on Thu, 08 July 1999 00:00
		Re: Exceed and IDL By: Mark Hadfield on Thu, 08 July 1999 00:00
		Re: Exceed and IDL By: Mark Hadfield on Thu, 08 July 1999 00:00
		Re: Exceed and IDL By: davidf on Wed, 07 July 1999 00:00
		Re: Exceed and IDL By: Richard G. French on Wed, 07 July 1999 00:00
		Re: Exceed and IDL By: Liam Gumley on Wed, 07 July 1999 00:00
		Re: Exceed and IDL By: davidf on Wed, 07 July 1999 00:00
		Re: Exceed and IDL By: bkrrrrr on Wed, 07 July 1999 00:00
		Re: Exceed and IDL By: Liam Gumley on Wed, 07 July 1999 00:00
		Re: Exceed and IDL By: bkrrrrr on Tue, 06 July 1999 00:00
		Re: Exceed and IDL By: Liam Gumley on Tue, 06 July 1999 00:00
		Re: Exceed and IDL By: Liam Gumley on Tue, 06 July 1999 00:00
		Re: Exceed and IDL By: Barry Latter on Tue, 06 July 1999 00:00
		Re: Exceed and IDL By: davidf on Mon, 05 July 1999 00:00

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