On 11 April 2014 02:30, Jack PC TLC Ltd wrote: > I have searched the entire distro for the C++11 wstring_convert<> class and > it is not there! I also note that there is no codecvt file in the main > include directory (C:\Program > Files\mingw-builds\x64-4.8.1-win32-seh-rev5\mingw64\lib\gcc\x86_64-w64-mingw > 32\4.8.1\include\c++). Correct. They're not implemented yet, this is documented in the manual http://gcc.gnu.org/onlinedocs/gcc-4.8.2/libstdc++/manual/manual/status.html#status.iso.2011