Mine

#include <qstring.h>
#include <qtextcodec.h>
#include <iostream.h>
#include <locale.h>

int main() {
        setlocale( LC_COLLATE, "de_DE.UTF-8" );
        QString string1( "b.b" );
        QString string2( "ba" );
        cout << "string1 : '" << string1.lower() << "'" << endl;
        cout << "string2 : '" << string2.lower() <<  "'" << endl;
        cout << "result of string1.lower().localeAwareCompare(string2.lower() ) : " << string1.lower().localeAwareCompare( string2.lower() ) << endl;
        cout << "result of string1.lower().compare(string2.lower() ) : " << string1.lower().compare( string2.lower() ) << endl;


}