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POOutput unicode strings in Windows console app
 

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    <p>Hi I was trying to output unicode string to a console with <em>iostreams</em> and failed.</p> <p>I found this: <a href="https://stackoverflow.com/questions/1922294/using-unicode-font-in-c-console-app">Using unicode font in c++ console app</a> and this snippet works.</p> <pre><code>SetConsoleOutputCP(CP_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); </code></pre> <p>However, I did not find any way to output unicode correctly with iostreams. Any suggestions?</p> <p>This does not work:</p> <pre><code>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; </code></pre> <p><strong>EDIT</strong> I could not find any other solution than to wrap this snippet around in a stream. Hope, somebody has better ideas.</p> <pre><code>//Unicode output for a Windows console ostream &amp;operator-(ostream &amp;stream, const wchar_t *s) { int bufSize = WideCharToMultiByte(CP_UTF8, 0, s, -1, NULL, 0, NULL, NULL); char *buf = new char[bufSize]; WideCharToMultiByte(CP_UTF8, 0, s, -1, buf, bufSize, NULL, NULL); wprintf(L"%S", buf); delete[] buf; return stream; } ostream &amp;operator-(ostream &amp;stream, const wstring &amp;s) { stream - s.c_str(); return stream; } </code></pre>
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    1. COCould you clarify exactly how it is failing? Are you getting garbled/wrong characters or something? Have you tried capturing STDOUT and verify the correct bytes are being sent but not displayed maybe?
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    2. COIt shows placeholders instead of characters. I did not look very much deep into it. The only thing I can tell, is that for some reason, the same string sent to wcout or cout goes crazy while wprintf displays it with no problem.
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    3. COOnly *some* Unicode characters can be properly displayed inside the Win32 console. The console doesn't support characters that are too complicated or ones that have combining marks that affect their size. Try it with [`WriteConsoleW`](http://msdn.microsoft.com/en-us/library/windows/desktop/ms687401.aspx) -- if it doesn't work with that, then it's impossible.
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