ASCII strings to Unicode in C++

std::string source = "Hello World";
std::wstring result( source.begin(), source.end() );

I'm an independent Software Developer living in the Alpes Maritimes (aka French Riviera).

Even if in the past I have worked regularily with Fortran, Pascal, Basic (not necessarily Visual), and much more esoteric languages (who knows Prolog, Lotus 123 macros ?), even if I still work from time to time with C#, Java or some "interpreted languages", I'm more specialized in C++.
I work on MFC since the very first version, I enjoy working on Visual Studio 2010, its C++0x features, STL, MFC, boost, WTL ...