[RESOLVED] Unicode string conversion function issue

[Mybowlcut]

Hey.

For some reason, wstr ends up being an empty string. I've debugged it and it the conversion functions works, but it seems that when it returns the string something goes wrong:

LPCWSTR wstr = Conversions::to_wstring("hello").c_str();

std::wstring Conversions::to_wstring(char* mb_str)
{
    const size_t old_size = strlen(mb_str) + 1;
    const size_t new_size = old_size * 2;
    size_t converted_chars = 0;
    boost::scoped_array<wchar_t> wc_string(new wchar_t&#091;new_size&#093;);

    mbstowcs_s(&converted_chars, wc_string.get(), old_size, mb_str, _TRUNCATE);

    return std::wstring(wc_string.get());
}

std::wstring Conversions::to_wstring(const char* mb_str)
{
    return to_wstring(const_cast<char*>(mb_str));
}

Also, what would be a more portable way to determine the size of new_size in Conversions::to_wstring?

Cheers.