Output unicode strings in Windows console app

Question

Hi I was trying to output unicode string to a console with iostreams and failed.

I found this: Using unicode font in c++ console app and this snippet work

Answer 1

First, sorry I probably don't have the fonts required so I cannot test it yet.

Something looks a bit fishy here

// the following is said to be working
SetConsoleOutputCP(CP_UTF8); // output is in UTF8
wchar_t s[] = L"èéøÞǽлљΣæča";
int bufferSize = WideCharToMultiByte(CP_UTF8, 0, s, -1, NULL, 0, NULL, NULL);
char* m = new char[bufferSize]; 
WideCharToMultiByte(CP_UTF8, 0, s, -1, m, bufferSize, NULL, NULL);
wprintf(L"%S", m); // <-- upper case %S in wprintf() is used for MultiByte/utf-8
                   //     lower case %s in wprintf() is used for WideChar
printf("%s", m); // <-- does this work as well? try it to verify my assumption

while

// the following is said to have problem
SetConsoleOutputCP(CP_UTF8);
utf8_locale = locale(old_locale,
                     new boost::program_options::detail::utf8_codecvt_facet());
wcout.imbue(utf8_locale);
wcout << L"¡Hola!" << endl; // <-- you are passing wide char.
// have you tried passing the multibyte equivalent by converting to utf8 first?
int bufferSize = WideCharToMultiByte(CP_UTF8, 0, s, -1, NULL, 0, NULL, NULL);
char* m = new char[bufferSize]; 
WideCharToMultiByte(CP_UTF8, 0, s, -1, m, bufferSize, NULL, NULL);
cout << m << endl;

what about

// without setting locale to UTF8, you pass WideChars
wcout << L"¡Hola!" << endl;
// set locale to UTF8 and use cout
SetConsoleOutputCP(CP_UTF8);
cout << utf8_encoded_by_converting_using_WideCharToMultiByte << endl;