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No, you can't have variadic templates with template metaprogramming. Sorry, you should use PREPROCESSOR programming. I have never use it yet, but waiting from variadic templates it seams the single way. See http://www.boost.org/doc/libs/1_35_0/libs/preprocessor/doc/index.html.

Looked at the reference. I heard "whoosh" when it flew high over by head. :-) Maybe I'll get to use that stuff but not until I really have to. :-) ...

I was proposing to help you with the shared memory issues, not to do it. Any way, I could start with the first ideas, but I can not manage with the tests.

Then I'll have to put that problem aside and look at it later as I have no framework (the latest Boost) to implement shared-memory support in Pimpl. Thanks, anyway. Thanks, Vladimir.