Hi all,

I am trying to introduce XML serialization in my project, but even with the simplest test, I cannot get something to work. Here is what I did:

#define PARAMETERS_HPP


#include <boost/archive/xml_iarchive.hpp>




#include <boost/archive/xml_oarchive.hpp>






#include <iostream>






class rss_feeds_to_parse




{


public:


    bool all;






    template<class Archive> void serialize(Archive & ar, const unsigned int file_version)




    {


        ar & BOOST_SERIALIZATION_NVP(all);




    }


};




class parameters




{


public:


    rss_feeds_to_parse feeds;






    template<class Archive> void serialize(Archive & ar, const unsigned int file_version)




    {


        ar & BOOST_SERIALIZATION_NVP(feeds);




    }


};




#endif // PARAMETERS_HPP




Later, in my main, I have:



    parameters p;




    p.feeds.all = true;




    std::ofstream ofs("test_parameters.xml");




    assert(ofs.good());




    boost::archive::xml_oarchive oa(ofs);




    oa << BOOST_SERIALIZATION_NVP(p);



It compiles, links and executes well, the file test_parameters.xml is created ... but empty !



What am I doing wrong?

Hope you could help.

Best regards,

Olivier