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Re: Widget Event_Pro question [message #59601 is a reply to message #59480]

Wed, 02 April 2008 08:23

David Fanning
Messages: 11724
Registered: August 2001

Senior Member

Spon writes:

> I need to define this array before any instances of widget B are open.
> Can I use a value of [-1L] for this? Or is -1 a valid widget ID number
> that might cause problems later if IDL decides to label one of my
> widgets -1 at some point?

All widget IDs are positive. But, a pointer comes
to mind, too. :-)

Cheers,

David
--
David Fanning, Ph.D.
Fanning Software Consulting, Inc.
Coyote's Guide to IDL Programming (www.dfanning.com)
Sepore ma de ni thui. ("Perhaps thou speakest truth.")

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[Message index]

		Widget Event_Pro question By: Spon on Mon, 31 March 2008 04:29
		Re: Widget Event_Pro question By: Spon on Wed, 02 April 2008 09:10
		Re: Widget Event_Pro question By: David Fanning on Wed, 02 April 2008 08:47
		Re: Widget Event_Pro question By: Spon on Wed, 02 April 2008 08:38
		Re: Widget Event_Pro question By: David Fanning on Wed, 02 April 2008 08:23

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