Probably the best way is via boost::serialization (but we have to give more careful consideration to Google Protocol Buffer).

Some resources to check:

• http://www.parashift.com/c++-faq-lite/serialization.html
• http://www.ibm.com/developerworks/aix/library/au-boostserialization/index.html?ca=drs-
• http://code.google.com/intl/it/apis/protocolbuffers/docs/cpptutorial.html