qDebug() and TextCodec

I want to make sure tha everything that is streamed into qDebug() will be written URF-8. Do these 2 lines achieve this aim?
QTextCodec::setCodecForCStrings( QTextCodec::codecForName("UTF-8") );
QTextCodec::setCodecForLocale( QTextCodec::codecForName("UTF-8") );