Re: Dynamic 2-dimensional array as parameter for COM method?

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From: Jyrki Erjanti
Date: Thu, 28 Jan 1999 00:00

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David Morgenlender wrote:
> 
> Jyrki Erjanti <Jyrki.Erjanti@fidri.mail.abb.com> wrote:
> 
> >In IDL specify just VARIANT.
> >
> >Use VARIANT of type VT_ARRAY | VT_xxx. Make parray of the
> >VARIANT to point to a SAFEARRAY. SAFEARRAY may contain
> >more than one dimension.
> 
> Why is a VARIANT required, instead of specifying SAFEARRAY directly?
> 
> =======================================================
> Dave Morgenlender
> e-mail: dmorgen@alum.mit.edu
> =======================================================

You can use SAFEARRAY directly, but doing so may limit the
use of your component. I have heard that there are many
language implementations, which, although they claim to be
"automation compatible", do not allow SAFEARRAYs to be
used directly.

Even VB 5.0 interpretes the "compatibility" so that it
does not accept SAFEARRAY as [in] parameter but requires
SAFEARRAY*.

                      JE

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From: Jyrki Erjanti <Jyrki.Erjanti@fidri.mail.abb.com>
Subject: Re: Dynamic 2-dimensional array as parameter for COM method?
Date: 1999/01/28
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