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    copied!<p>First, sorry I probably don't have the fonts required so I cannot test it yet. </p> <p>Something looks a bit fishy here</p> <pre><code>// 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); // &lt;-- upper case %S in wprintf() is used for MultiByte/utf-8 // lower case %s in wprintf() is used for WideChar printf("%s", m); // &lt;-- does this work as well? try it to verify my assumption </code></pre> <p>while</p> <pre><code>// 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 &lt;&lt; L"¡Hola!" &lt;&lt; endl; // &lt;-- 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 &lt;&lt; m &lt;&lt; endl; </code></pre> <p>what about</p> <pre><code>// without setting locale to UTF8, you pass WideChars wcout &lt;&lt; L"¡Hola!" &lt;&lt; endl; // set locale to UTF8 and use cout SetConsoleOutputCP(CP_UTF8); cout &lt;&lt; utf8_encoded_by_converting_using_WideCharToMultiByte &lt;&lt; endl; </code></pre>
 

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