Re: Widget Event_Pro question

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)
Se****e ma de ni thui. ("Perhaps thou speakest truth.")