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Re: Catching errors with widgets [message #857 is a reply to message #856]

Thu, 08 April 1993 07:48

rarback
Messages: 15
Registered: October 1992

Junior Member

I don't know if this is relevant to your problem or not, but I was getting
the same Variable is undefined message when I used ON_IOERROR to trap errors
in my widget based application. The following dialog between support@rsinc.com
and me may be relevant:

>> 4. There appears to be a problem with the ON_IOERROR statement (which I can
>> only get to manifest itself with widget-based applications).
>> ...
>> This application eventually leads to an IDL error if the ON_IOERROR trap is
>> taken at least once. The error type and its location don't seem to be
>> reproducible.If there is no Xmanager background procedure, errors still occur
>> but much less often. (I ran into this behavior when my production code
>> produced the error "Array has corrupted descriptor". I knew something was not
>> kosher!)

> This is a known problem in IDL 3.0 (and perhaps earlier versions). It
> has been fixed and will be available in the next version of IDL after
> version 3.0. You are correct that it involves the use of ON_IOERROR
> in widget applications.

> Alan Youngblood
>
> support@rsinc.com / /\ /
> 303-786-9930 x320 / /_/ /__ Technical Support

----
Harvey Rarback Internet: rarback@bnlx26.nsls.bnl.gov
Brookhaven National Lab ESnet/NSI: BNLX26::RARBACK
Upton, NY 11973 BITNET: RARBACK@BNL
(516) 282-3758

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[Message index]

		Re: Catching errors with widgets By: landsman on Thu, 08 April 1993 11:18
		Re: Catching errors with widgets By: rarback on Thu, 08 April 1993 07:48
		Re: Catching errors with widgets By: thompson on Thu, 08 April 1993 06:37

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