Print all std::locale names (Windows) - c++

Question

My program checks for uppercase letters in German language.
#include <iostream>
#include <boost/algorithm/string/classification.hpp>
#include <boost/locale.hpp>
using namespace std;
int main()
{
locale::global(locale("Germany_german"));
//locale::global(locale("de_DE.UTF-8")); //Also tried "de_DE.UTF-8", but does not work
string str1 = "über";
cout << boolalpha << any_of(str1.begin(), str1.end(), boost::algorithm::is_upper()) << endl;
string str2 = "Ää";
cout << boolalpha << any_of(str2.begin(), str2.end(), boost::algorithm::is_upper()) << endl;
return 0;
}
program crashes with error on console
terminate called after throwing an instance of 'std::runtime_error'
what(): locale::facet::_S_create_c_locale name not valid
I don't know what that exact locale string is, "de_DE.UTF-8" doesn't work as well.
Is there any way I can get exact locale name strings for all locales supported by OS. May be there is a list somewhere in header files, but I don't see anything <locale> header.

Answer 1

I wrote a program to print all supported locale names.
#include <Windows.h>
#include <iostream>
#include <string>
#include <vector>
#include <algorithm>
#include <ostream>
#include <iterator>
using namespace std;
vector<wstring> locals;
BOOL CALLBACK MyFuncLocaleEx(LPWSTR pStr, DWORD dwFlags, LPARAM lparam)
{
locals.push_back(pStr);
return TRUE;
}
int _tmain(int argc, _TCHAR* argv[])
{
EnumSystemLocalesEx(MyFuncLocaleEx, LOCALE_ALL, NULL, NULL);
for (vector<wstring>::const_iterator str = locals.begin(); str != locals.end(); ++str)
wcout << *str << endl;
wcout << "Total " << locals.size() << " locals found." << endl;
return 0;
}
Works great.
...
de
de-AT
de-CH
de-DE
de-DE_phoneb
de-LI
de-LU
...
Total 429 locals found.

Answer 2

#user1 The following might do the same as your elegant code. I can't test it because of the C1189 compiler error.
#include <Winnls.h>
#include <iostream>
#include <ostream>
using namespace std;
int size = 0;
BOOL CALLBACK MyFuncLocaleEx(LPWSTR pStr, DWORD dwFlags, LPARAM lparam) {
size++;
wcout << *pStr << endl;
}
int _tmain(int argc, _TCHAR* argv[])
{
EnumSystemLocalesEx(MyFuncLocaleEx, LOCALE_ALL, NULL, NULL);
wcout << "Total " << size << " locales found." << endl;
return 0;
}