std::string, std::wstring, wchar_t*, Platform::String^ 之间的相互转换

std::wstring stows(std::string s)
{
std::wstring ws;
ws.assign(s.begin(), s.end());
return ws;
}

Platform::String^ stops(std::string s)
{
return ref new Platform::String(stows(s).c_str());
}

std::string wstos(std::wstring ws)
{
std::string s;
s.assign(ws.begin(), ws.end());
return s;
}

std::string pstos(Platform::String^ ps)
{
return wstos(std::wstring(ps->Data()));
}