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Re: Q: Clearing Widget Events [message #6780 is a reply to message #6771]

Tue, 13 August 1996 00:00

Peter Mason
Messages: 145
Registered: June 1996

Senior Member

On Tue, 13 Aug 1996, Saeid Zoonematkermani wrote:
> I am trying to write my first serious widget application and the debugging
> process is confusing me. I am using IDL 4.0.1 on Mac OS.
>
> When some kind of error happens, the widget hangs up and I clear it with
> by pressing the close button. Then I use "WIDGET_CONTROL,/DESTROY,
> EVENT.TOP" and a "RETALL" after that. I return to the main and fix the bug
> and rerun the widget. The widget comes up but accepts no events and is
> totally incative. I have also tried "WIDGET_CONTROL,/CLEAR_EVENTS" and it
> doesn't seem to help. The only solution I have found, is to restart IDL.
> Does any one have any suggestions? Am I missing some thing very basic?

After manually closing the widget (via the window manager) and typing RETALL,
one can sometimes get things back in order by typing XMANAGER (with no
arguments) at the command line.
If this doesn't work, try the more drastic WIDGET_CONTROL,/RESET.
But sometimes things simply get too stuck, and the only thing which works
is restarting IDL.

An alternative - especially if the bug is due to something simple like an
undefined variable - is to kludge a quick fix at the command line (e.g.,
define the missing variable) and type .CONT

Peter Mason

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[Message index]

		Re: Q: Clearing Widget Events By: steinhh on Thu, 15 August 1996 00:00
		Re: Q: Clearing Widget Events By: David Foster on Wed, 14 August 1996 00:00
		Re: Q: Clearing Widget Events By: Peter Mason on Tue, 13 August 1996 00:00
		Re: Q: Clearing Widget Events By: Robert Moss on Tue, 13 August 1996 00:00
		Re: Q: Clearing Widget Events By: rigby on Tue, 13 August 1996 00:00

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