[Boost-users] [filesystem] wpath and fopen() on windows

Hi, What is the best way for me to use boost::filesystem::wpath with a 3rd party C library that expects a const char* filename, on Windows? On linux, its simple: my_file.to_external_string() but on windows that gives me a wide-character string. So far the only thing I can think of is to roll my own wstring --> UTF8 conversion function, but I'm not even sure that is correct (will fopen() work with UTF-8 encoded filenames on windows?). thanks, Paul