> -----Original Message-----
> From: Bill Luebkert
> >
> > So, my DEVMODE is a defines as
> >
> > DEVMODE * FAR *mode
> >
> > How does one unpack a double pointer to a struct?
>
> I would assume define it as a ptr:
> my $mode = pack 'P', 0;
>
> And then you would need to do something like:
>
> my @devmode = unpack 'C180', unpack ('P', $mode);
>
> on that pointer if I'm thinking right or replace the C180 with a list
> of each field in the structure's actual type:
>
> my ($dmDeviceName, $dmSpecVersion, $dmDriverVersion, $dmSize,
> $dmDriverExtra, $dmFields, ...) = unpack 'C32S4I...',
> unpack ('P', $mode);;
The returned value from the API is a 4 Byte value (followed by nulls),
so I am sure it is a pointer.
>
> I've never dealt with a ptr to a ptr so ...
Does anyone have any expereince using the Pointer.pm found at CPAN?
http://search.cpan.org/~ingy/Pointer-0.11/lib/Pointer.pm And, if so,
can you do multiple layers of indirection with it? I just found it this
morning on CPAN and don't have access to my development box until later
tonight.
Thanks,
Adam
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