| WIDGET_CONTROL: Invalid widget identifier: 2 [message #57617] |
Fri, 14 December 2007 10:58  |
envi35@yahoo.ca
Messages: 48
Registered: March 2005
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Member |
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Hi, when I run an idl programm (in envi batch mode) a second time in
an idl session, I got the following error: WIDGET_CONTROL: Invalid
widget identifier: 2. I don't think I opened or used any widget in the
programm if this is what it meant. Why am I getting this? Sorry if
this question is too simple and bored you...
Thanks,
Jenny
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| Re: WIDGET_CONTROL: Invalid widget identifier: [message #78610 is a reply to message #57617] |
Tue, 06 December 2011 09:02  |
Mark Piper
Messages: 198
Registered: December 2009
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Senior Member |
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On 12/5/2011 4:41 PM, DB wrote:
>
> pro testt
> compile_opt idl2
> envi, /restore_base_save_files
> envi_batch_init
>
> End
Don't forget to call ENVI_BATCH_EXIT at the end of TESTT (as well as any
time TESTT would terminate with an error). The first time TESTT is
called this won't cause a problem, but subsequent calls to TESTT in the
same ENVI+IDL session will give the error message you're seeing.
mp
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| Re: WIDGET_CONTROL: Invalid widget identifier: [message #78611 is a reply to message #57617] |
Tue, 06 December 2011 07:28 |
DB
Messages: 2
Registered: December 2011
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Junior Member |
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Thanks David,
That was the tip I needed, all it takes is a reset of the idl session
(I imagine I slopply forgot to destroy something). For some reason I
did not think of trying this before.
As usual a question out of ignorance
Thanks
David
On Dec 5, 5:31 pm, David Fanning <n...@dfanning.com> wrote:
> DB writes:
>> I am pretty new to idl but have experience in other languages. I am
>> working on a very large program originally created in idl 7, but I am
>> working in idl 8.0.1. The following has been simplified from the
>> program and produces an unusual error
>
>> % Stepped to: ENVI_REAL_MAIN_BASE % WIDGET_CONTROL: Invalid widget
>> identifier: 17.
>
>> This error persists when the problematic portion of code is isolated
>> as below. I have included the entire error message. Any suggestions to
>> my ignorance or ways to overcome/fix this problem.
>
>> pro testt
>> compile_opt idl2
>> envi, /restore_base_save_files
>> envi_batch_init
>
>> End
>
> I'm not much of an ENVI person, but I *think* you have
> execute those two ENVI commands from the IDL main-level.
> That is, not from inside a program module. (I seem to recall
> having the same problem once.)
>
> The invalid widget identifier comes about when you try
> to use a widget identifier in a command and that widget
> no longer exists. This could happen, for example, if you
> saved a program that used widgets, then killed all the widgets.
> When you restore the program, you will have to re-create all
> the widgets and update the widget identifiers. Otherwise, this
> is exactly what can happen.
>
> Cheers,
>
> David
>
> --
> David Fanning, Ph.D.
> Fanning Software Consulting, Inc.
> Coyote's Guide to IDL Programming:http://www.idlcoyote.com/
> Sepore ma de ni thui. ("Perhaps thou speakest truth.")
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| Re: WIDGET_CONTROL: Invalid widget identifier: [message #78618 is a reply to message #57617] |
Mon, 05 December 2011 16:31 |
David Fanning
Messages: 11724
Registered: August 2001
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Senior Member |
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DB writes:
> I am pretty new to idl but have experience in other languages. I am
> working on a very large program originally created in idl 7, but I am
> working in idl 8.0.1. The following has been simplified from the
> program and produces an unusual error
>
> % Stepped to: ENVI_REAL_MAIN_BASE % WIDGET_CONTROL: Invalid widget
> identifier: 17.
>
> This error persists when the problematic portion of code is isolated
> as below. I have included the entire error message. Any suggestions to
> my ignorance or ways to overcome/fix this problem.
>
> pro testt
> compile_opt idl2
> envi, /restore_base_save_files
> envi_batch_init
>
> End
I'm not much of an ENVI person, but I *think* you have
execute those two ENVI commands from the IDL main-level.
That is, not from inside a program module. (I seem to recall
having the same problem once.)
The invalid widget identifier comes about when you try
to use a widget identifier in a command and that widget
no longer exists. This could happen, for example, if you
saved a program that used widgets, then killed all the widgets.
When you restore the program, you will have to re-create all
the widgets and update the widget identifiers. Otherwise, this
is exactly what can happen.
Cheers,
David
--
David Fanning, Ph.D.
Fanning Software Consulting, Inc.
Coyote's Guide to IDL Programming: http://www.idlcoyote.com/
Sepore ma de ni thui. ("Perhaps thou speakest truth.")
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