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Re: Widgets and research [message #9374 is a reply to message #9263]

Tue, 17 June 1997 00:00

David Foster
Messages: 341
Registered: January 1996

Senior Member

David Fanning wrote:
>
> Edward S. Meinel writes:
>
>> On the other hand, I am reluctant to try IDL 5.beta because of all the
>> reports of broken widgets. Do _any_ widgets developed with IDL 4 work
>> under 5.0?
>
> As a matter of fact, *all* of my widgets work under IDL 5.0.
> A few of them don't *look* exactly like they did under IDL 4,
> but the problems are aesthetic rather than functional. So
> far every one of them has worked like I expect it to.
>

In IDL 5.0 the implementation of modal widgets is completely different
than it was previously, and this has major implications for how
widget applications work together when one or more of them are modal.
In our lab we often have a series of apps that are called
successively, and I'm finding that all the "rules" are different
as far as what combinations are possible.

For example, the following scenario is ok:

MODAL_WID --> NON_MODAL_WID --> MODAL_WID

(modal widget calls non-modal widget etc.).

But the following is NOT ok:

MODAL_WID --> MODAL_WID --> NON_MODAL_WID --> MODAL_WID

When you do this the last modal widget does not generate any events.
This use to work in IDL 4.0.1, now it doesn't. I'm finding other
similar problems related to modal widgets. If you're lucky, you
don't use modal widgets often, and so won't notice these problems.

(Check out XMANAGER.PRO to see the comments about how the
implementation of modal widgets has changed.)

Dave
--

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ~~~~~~
David S. Foster Univ. of California, San Diego
Programmer/Analyst Brain Image Analysis Laboratory
foster@bial1.ucsd.edu Department of Psychiatry
(619) 622-5892 8950 Via La Jolla Drive, Suite 2200
La Jolla, CA 92037
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ~~~~~~

"I have this theory that if we're told we're bad,
then that's the only idea we'll ever have.
But maybe if we are surrounded in beauty,
someday we will become what we see." - Jewel Kilcher

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[Message index]

		Re: Widgets and research By: davidf on Sun, 15 June 1997 00:00
		Re: Widgets and research By: mgs on Sun, 15 June 1997 00:00
		Re: Widgets and research By: rivers on Sat, 14 June 1997 00:00
		Re: Widgets and research By: Jonathan Rogness on Fri, 13 June 1997 00:00
		Re: Widgets and research By: Stein Vidar Hagfors H on Fri, 13 June 1997 00:00
		Re: Widgets and research By: davidf on Fri, 13 June 1997 00:00
		Re: Widgets and research By: meinel on Fri, 13 June 1997 00:00
		Re: Widgets and research By: David Foster on Tue, 17 June 1997 00:00
		Re: Widgets and research By: davidf on Tue, 17 June 1997 00:00
		Re: Widgets and research By: mgs on Tue, 17 June 1997 00:00

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