Hi, I have a situation where I would like to parse the command line options not as (int argc, char **argv) template<typename charT> basic_parsed_options< charT > parse_command_line(int argc, const charT *const argv, const options_description &, int style = 0, function1< std::pair< std::string, std::string >, const std::string & > ext = ext_parser()); but as a std::string. The std::string is the equivalent of the command line but obtain either from reading some file or cut and paste. E.g. my input string would be something like "myprog 817382 --lod="lod.cfg" --radius=3.0" With such string as the above, I'd like to know how I should pass it to boost::program_options Regards -- Nicholas Yue Graphics - RenderMan, Visualization, OpenGL, HDF5 Custom Dev - C++ porting, OSX, Linux, Windows Management - Recruitment, career management http://www.proceduralinsight.com/ http://au.linkedin.com/in/nicholasyue