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Re: IDL 5.0 observations [message #9146 is a reply to message #9092]

Fri, 30 May 1997 00:00

davidf
Messages: 2866
Registered: September 1996

Senior Member

David Foster writes:

> Yet more IDL 5.0 observations:

> 2. What leads to even more editing is the fact that you should not
> use EVENT_PRO or EVENT_FUNC keywords in the WIDGET_BASE() call,
> use EVENT_HANDLER in XMANAGER instead. This means that for all
> popup utility windows that generate events for their applications,
> and for each application in turn, you have to modify the widget
> creation code. Again, a pain if you have many applications.

Actually, I don't think this has changed. The event handler for
the top-level base should *always* be assigned with the XMANAGER
call and *never* with EVENT_PRO. This was true in IDL 4.0, as I
learned only too well after a couple of *very* long evenings
debugging code. I think it is just better documented in IDL 5.0. :-)

> Now that all the crud is taken care of I'm hoping to play around
> with the new features like pointers and OOP stuff. I have a feeling
> I'll be impressed.

I have to say, pointers are blowing me away. They are SOoooo
nice! The only thing I miss about handles (it is a small thing)
is that I could free up the whole lot of them by freeing
the parent. And I am also greatly impressed with how little
effort is required to switch between handles and pointers,
at least in my code. This is a nice job, RSI!

I'm having a few problems with resizeable graphics windows
getting "stuck" at a particular size in certain circumstances,
but so far it's not too bad and I've managed to find work-
arounds.

Cheers,

David

David

----------------------------------------------------------
David Fanning, Ph.D.
Fanning Software Consulting
Customizable IDL Programming Courses
Phone: 970-221-0438 E-Mail: davidf@dfanning.com
Coyote's Guide to IDL Programming: http://www.dfanning.com

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[Message index]

		IDL 5.0 observations By: Phil Williams on Tue, 27 May 1997 00:00
		Re: IDL 5.0 observations By: Gilles Ratel on Wed, 04 June 1997 00:00
		Re: IDL 5.0 observations By: Mirko Vukovic on Tue, 03 June 1997 00:00
		Re: IDL 5.0 observations By: davidf on Tue, 03 June 1997 00:00
		Re: IDL 5.0 observations By: Paul R Smith on Tue, 03 June 1997 00:00
		Re: IDL 5.0 observations By: davidf on Tue, 03 June 1997 00:00
		Re: IDL 5.0 observations By: Mirko Vukovic on Mon, 02 June 1997 00:00
		Re: IDL 5.0 observations By: davidf on Fri, 30 May 1997 00:00
		RE: IDL 5.0 Observations By: davidf on Mon, 09 June 1997 00:00
		Re: IDL 5.0 Observations By: Andy Loughe on Mon, 09 June 1997 00:00
		Re: IDL 5.0 observations By: davidf on Sun, 08 June 1997 00:00
		Re: IDL 5.0 observations By: thompson on Fri, 06 June 1997 00:00
		Re: IDL 5.0 observations By: davidf on Thu, 05 June 1997 00:00
		Re: IDL 5.0 observations By: Stein Vidar Hagfors H on Thu, 05 June 1997 00:00

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