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Re: Attempt to store into an expression: Structure reference [message #63278 is a reply to message #63277]

Tue, 04 November 2008 08:58

greg.addr
Messages: 160
Registered: May 2007

Senior Member

Initialised with /heap_allocate:

IDL> help,((*(s.tab))[i]).img
<Expression> POINTER = <PtrHeapVar8>

IDL> ((*(s.tab))[i]).img=ptr_new(image)
% Attempt to store into an expression: Structure reference.

...still get the same. But this does work...

IDL> (*(s.tab))[i].img=ptr_new(image)

Thanks for the quick answers! And I was thinking you could never have
too many brackets when there's a pointer around! Still, I would like
to know about /heap_allocate - when do you need that?

regards,
Greg

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[Message index]

		Re: Attempt to store into an expression: Structure reference By: David Fanning on Tue, 04 November 2008 10:54
		Re: Attempt to store into an expression: Structure reference By: R.Bauer on Tue, 04 November 2008 09:40
		Re: Attempt to store into an expression: Structure reference By: David Fanning on Tue, 04 November 2008 09:12
		Re: Attempt to store into an expression: Structure reference By: greg.addr on Tue, 04 November 2008 08:58
		Re: Attempt to store into an expression: Structure reference By: Foldy Lajos on Tue, 04 November 2008 08:57
		Re: Attempt to store into an expression: Structure reference By: David Fanning on Tue, 04 November 2008 08:44
		Re: Attempt to store into an expression: Structure reference By: David Fanning on Tue, 04 November 2008 08:44
		Re: Attempt to store into an expression: Structure reference By: Vince Hradil on Tue, 04 November 2008 08:39
		Re: Attempt to store into an expression: Structure reference By: greg.addr on Wed, 05 November 2008 00:31

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