Re: Passing an array of array of VARIANTS
"SD" <SD@discussions.microsoft.com> wrote in message
news:2600FC7C-CDF5-41F4-9A87-9BEE616CBEE0@microsoft.com
Basically what I need to do is to have an ATL COM DLL expose an
interface with a method, say foo() which takes an array of array of
strings.
Take a SAFEARRAY of BSTR. In the body of the method, check that the
array is in fact two-dimensional (SafeArrayGetDim) and return an error
if it's not. There's no way to declare in the function's prototype that
you want an array of particular dimensions, you will have to check it at
runtime.
From what you've mentioned, it seems a two-dimensional array of
VARIANTS would be simpler. So could you please explain that further?
What specifically do you want to know? Read the documentation on various
SafeArray* API functions.
I need to use the method from this DLL in a VB (version 6) EXE, and
retrieve the strings.
So you need to create and return the array, not accept an incoming one.
That's even easier, you don't need to check that the array is of the
shape you expect. Again, what specifically seems to be the problem?
--
With best wishes,
Igor Tandetnik
With sufficient thrust, pigs fly just fine. However, this is not
necessarily a good idea. It is hard to be sure where they are going to
land, and it could be dangerous sitting under them as they fly
overhead. -- RFC 1925