[Boost-users] serialization binary_oarchive without signature?

i'd like to use boost serialization to serialize > 1 independent objects to a large file through a seekable stream, i.e. > 1 serialization archives in one file. can you turn off the archive signature("serialization::archiv") at the beginning of the output, or do I have to write my own archive class for that? and 2nd, is there a way(except serializing to a std::stringstream) to find out the archive size beforehand, e.g. an archive class which doesn't really serialize things but add up the size in bytes of the binary output? thanks, -- 10 GB Mailbox, 100 FreeSMS/Monat http://www.gmx.net/de/go/topmail +++ GMX - die erste Adresse f�r Mail, Message, More +++