| Re: Problem with CW_DEFROI [message #5936] |
Sun, 10 March 1996 00:00 |
Markus Heuer
Messages: 3
Registered: March 1996
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Junior Member |
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> (Skipped)
> On startup, my draw widget is empty; the user is requested to load an
> image file as the first operation.
>
> If, however, you inadvertently move the cursor over the draw widget
> ("Define ROI" button, which calls CW_DEFROI, has _not_ been clicked),
> IDL immediately exits with the message
> "Variable is undefined: VALUE"
> As I said, when you try IDL's example procedure for CW_DEFROI, you will
> see the same reaction. - Any way to avoid this ?
The example for CW_DEFROI given in the on-line help facility for
IDL/MSWindows Version 4.0.1 worked without errors on my PC.
Possibly, the problem you encountered, is specific to the
platform - or you tried out another example.
Further analysis would be facilitated if you could send the
source of the erroneous program.
Kind regards
Markus Heuer
Reiterstr. 5, 3013 Bern, Switzerland
Phone +41-31-324-6079 (office).
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