[boost] macro to work ok with ANSI/Unicode strings

Hi all, I need some C help : I want to create a macro that will expand to char* string or wchar_t* string, depending on the application's *char_type*. This is what I have so far: // the very short version #define BOOST_LOG_STR(x) ( x, L ## x) The problem I have is when using it this way: BOOST_LOG_STR("this " " and that"); It gives me the eror - concatenating wide and narrow strings. How do I get 'round that? Thanks! Best, John -- http://John.Torjo.com -- C++ expert ... call me only if you want things done right