gistfile1.cpp

std::wstring s2ws(const std::string& s)
{
    int len;
    int slength = (int)s.length() + 1;
    len = MultiByteToWideChar(CP_ACP, 0, s.c_str(), slength, 0, 0); 
    std::unique_ptr<wchar_t[]> buf(new wchar_t[len]);
    MultiByteToWideChar(CP_ACP, 0, s.c_str(), slength, buf.get(), len);
    std::wstring r(buf.get());
    return r;
}