Hi Boost, I have narrow stream buffers in the form: asio::streambuf request; asio::streambuf response; I currently read and write to them via narrow streams: std::istream request_stream(&request); std::ostream response_stream(&response); I also have a function foo with wide character stream operators: std::wostream &operater<<(std::wostream &, const foo &); std::wistream &operater>>(std::wistream &, foo &); I need a way to adapt my narrow request_stream and response_stream into wide streams so that I can use my foo class stream operators. I'm found the code_converter class which appears to do what I want but examples are hard to come by. I got something compiling, but I don't know if it is correct: typedef boost::iostreams::code_converter< boost::iostreams::array_source, std::codecvt<wchar_t, char, mbstate_t> > char_to_wchar; boost::iostreams::stream<char_to_wchar> request_stream(&request_); request_stream >> foo_object; I also don't know how to do the reverse as the following doesn't compile at all: boost::iostreams::stream<char_to_wchar> response_stream(&response_); response_stream << foo_object; Anyone got any advice on this? Thanks -John