| Re: Where O Where Di My Pointer Go? [message #61415] |
Tue, 15 July 2008 12:43  |
phillipbitzer
Messages: 6
Registered: November 2007
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Junior Member |
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/begin long string of curse words.....
Thanks David, that did the trick. Oh, since I bought your book, I was
looking at OpenImage.pro :-)
On Jul 15, 2:32 pm, David Fanning <n...@dfanning.com> wrote:
> phillipbit...@gmail.com writes:
>> I've battling with this for a week now, and I think it needs a fresh
>> pair of eyes. I am working on code that pops up a Modal Widget, does
>> some manipulation, and pass some information back to the user. For
>> reference, I am using D Fanning's general approach to this problem.
>
> I think you are going to have to look at textbox.pro just
> a little more carefully. :-)
>
>> filter_dialog_info = {filter_times:PTR_NEW(times), $
>> filter_data:PTR_NEW(data), $
>> filter_data1:PTR_NEW(data), $
>> filter_data2:PTR_NEW(data), $
>> filter_data3:PTR_NEW(data)}
>
>> WIDGET_CONTROL, tlb, SET_UVALUE=filter_dialog_info, /No_copy
>
> Your pointers are in a structure that you store in the UVALUE
> of your TLB. This structure is completely and utterly destroyed
> by the time you get to the other side of your XMANAGER call.
> And, while the pointers are there, you have no way to get to
> them now.
>
> Make your pointers outside this structure, *then* put them
> in the structure. That way, you will have access to them
> when you need them.
>
> Cheers,
>
> David
> --
> David Fanning, Ph.D.
> Fanning Software Consulting, Inc.
> Coyote's Guide to IDL Programming (www.dfanning.com)
> Sepore ma de ni thui. ("Perhaps thou speakest truth.")
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