Populatnig cells from an addin

[Clive]

Hi,
I'm hoping someone can help - i'm VERY new to addin programming, but a
seasoned c++ programmer.

I have got the hang of an addin method taking a range of data from a
spreadsheet, & then populating the cell that the addin is called from
with the return value.

What I would now like to do is have an addin populate a range of
cells.
(If necessary, I don't mind being restricted whereby the addin perhaps
takes a reference to a range, & can only populate within that range).

Any help would be greatly appreciated.

Thanks in advance,
Clive