De std::wstring a std::string

Una manera practica para pasar de std::wstring a std::string y viceversa:

#include <string>
#include <algorithm>

// Prototype for conversion functions
std::wstring StringToWString(const std::string& s);
std::string WStringToString(const std::wstring& s);

std::wstring StringToWString(const std::string& s)
{
 std::wstring temp(s.length(),L' ');
 std::copy(s.begin(), s.end(), temp.begin());
 return temp;
}


std::string WStringToString(const std::wstring& s)
{
 std::string temp(s.length(), ' ');
 std::copy(s.begin(), s.end(), temp.begin());
 return temp;
}

Encontrado via: http://www.codeguru.com/forum/showthread.php?t=193852