When using boost::locale with the russian language of the string in UTF-8 encoding I get an error while getting the locale.
An exception with the message e.what(): "Conversion failed" is thrown

My code is not very different from that in the examples:

#define  TR(S)  boost::locale::translate(S).str()

const std::string strDefaultLangId( "en" );

int main( int argc, char * argv[] )

{

    using namespace std;

    using namespace boost::locale;

    int exitCode = EXIT_SUCCESS;

try

{

        generator gen;

        gen.add_messages_path("g:\\source\\boost_locale\\languages\\");

        gen.add_messages_domain("messages");

        std::string language( argc == 2 ? argv[1] : strDefaultLangId.c_str() );

        std::locale loc = gen( language );

        locale::global( loc );

        std::wstring s = TR(L"hello world");

        wcout << s << endl;

}

    catch( exception& e )

{

        cout << "Error : " << e.what() << endl;

        exitCode = EXIT_FAILURE;

}

    catch( ... )

{

        cout << "Unknown error" << endl;

        exitCode = EXIT_FAILURE;

}

    return exitCode;

}

The path to the file with the russian language: "g:\source\boost_locale\languages\ru\LC_MESSAGES\messages.mo"

What could be wrong?

* Is it necessary to use any backends?

* Is it yet necessary to call imbue on the stream? But I'd like avoid it because I am going to write the log using glog.