>>I haven't gotten into it in detail, but I have been told that the C++ functions that operate on BSTR data types assume NUL terminated strings. Have you found alternatives to this?
>
>BSTR strings contain a counter value, plus the string buffer, so you can
>indeed store binary data in these values. Keep in mind though that BSTR
>is a very inefficient format for this because BSTRS are double byte and
>with binary data that second byte is wasted.
>
>The problem is that most 'framework' functions and objects don't treat
>BSTRS as binary strings by default. So the various ATL COM classes
>don't support binary strings in BSTR values. Through the BSTR API
>calls you can get at the binary data fine though.

Thanks, is there a BLOB like COM data type? That works more efficiently?