How to set the locale::global to utf8 encoding?

Hi,

I try to set the global locale to "utf8" to let the mbstowcs()
function works for convert a utf8 string to an wchar_t*. I tried the
following code:

std::locale loc(".65001");
std::locale::global(loc);

But I failed at the first line, which I try to create a locale object
which code page is 65001(utf8). When I looked into the VC STL code, I
found in the implementation, there is a line to determine whether I
try to use UTF8 or UTF7, if I do, the function will return without
doing anything useful.

What is the problem? Can I set locale::global() to UTF8?

Thanks.

.

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