Where did you find that information? [This page](http://msdn.microsoft.com/en-us/library/windows/desktop/aa365247%28v=vs.85%29.aspx#maxpath) suggests to me that all Unicode functions in the Win32 API can handle long names, and creating directories is mentioned specifically (including the note that the limit for directory names is actually `SHRT_MAX - 12` to allow for an 8.3 file name to be appended... (I failed to see any note about length limitations on [`_wmkdir`'s documentation on MSDN](http://msdn.microsoft.com/en-us/library/2fkk4dzw.aspx) either...)