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Re: Newbie Questions
Geoff Herbynchuk wrote:
> On Tue, 15 May 2001, Geoff Herbynchuk wrote:
> > Was just wondering if IDL can have pointers to structures. I'm trying to
> > access a variable in the structure with:
> > if (*info).active_cursor EQ 1) then .....
> > And I keep getting an error which says "Expression must be a structure in
> > this context: <PtrHeapVar57>."
If the active_cursor tag represents the pointer within the structure, then you
will want to dereference it as follows:
if *(info.active_cursor) EQ 1 then .....
As JD has pointed out to the us pointer-challenged, you can also go the lazy
if *info.active_cursor EQ 1 then .....
The way you have written (*info).active_cursor indicates that info is a pointer
to a structre that conatins the active_cursor rather than being a structure
containing a field defined as pointer.
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