On 2/03/2012 3:42 PM, Alexander Surkov wrote:
If we add relations count as out argument then we get rid the idea of
lazy relations calculation. Iirc that was a primary reason of
IEnumVariant usage but I missed the point that IEnumVariant requires
the AT client to allocate the memory. So I think we should introduce
interface similar to IEnumVariant where the server allocates the
memory. That'll be similar to IAccessibleTable2 approach.
If I understand correctly, that would require a separate call to fetch
each relation, which might not be desirable in some cases and also
defeats the point of IEnumVARIANT. (If we're going to do that, we may as
well have the function take an additional parameter specifying the index
of the relation to fetch and return NULL when there are no more.)
What about a boolean specifying whether the count is desired?
Alternatively, the count could be an in, out parameter which doesn't
return the count if it's NULL, though I'm not sure if that is
particularly elegant.
Jamie
--
James Teh
Director, NV Access Limited
Email: [email protected]
Web site: http://www.nvaccess.org/
Phone: +61 7 5667 8372
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