| Re: Can't create pixmap [message #14701 is a reply to message #14690] |
Mon, 22 March 1999 00:00   |
Martin Schultz
Messages: 515
Registered: August 1997
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Senior Member |
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Phil Aldis wrote:
>
> Okay, now this is just silly
>
> I'm fully aware that the message can't create pixmap means that you've
> run out of memory. However this is never a message I get because my NT
> machine seems to be able to cope with using ordinary memory and in
> fact goes into page file space and if it runs out of that, well
> windows doesn't like that.
>
> However, I keep getting it and I could understand that if there was no
> memory left however I'm getting it when I create pixmaps of certain
> sizes. It's in an animation routine that the error occurs. It crashes
> out of the program with 'can't create pixmap'. The size of pixmap is
> 210x230, or something like that. If I create a 200x200 pixmap or
> 500x500 pixmap it's okay but as soon as you get close to the 210x230
> size it gives the previous error message.
>
> What is going on and more importantly what can be done to stop it,
> short of c not creating pixmaps of a certain size.
>
> I'm running IDL 5.1.1 on an NT 4.0 machine.
>
> Cheers,
> Phil
hmmm... just a thought: could it be that you are using integer values at
some point where there should be long's ? Then IDL would try to create a
pixmap with a negative number of elements...
This has happened to me a few times (although not with pixmaps), and you
can avoid it by explicitely "declaring" your variables as e.g. N=40000L
.
Martin.
--
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Dr. Martin Schultz
Department for Engineering&Applied Sciences, Harvard University
109 Pierce Hall, 29 Oxford St., Cambridge, MA-02138, USA
phone: (617)-496-8318
fax : (617)-495-4551
e-mail: mgs@io.harvard.edu
Internet-homepage: http://www-as.harvard.edu/people/staff/mgs/
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