want to put a qmessagebox that contains greek characters...

Something like this:

Code:
QMessageBox msgBox;
msgBox.setWindowTitle("Wallpaper Changer | Βγάλε Webcam-Εικόνα");
msgBox.setText("<b>Αυτή η λειτουργία θα είναι διαθέσιμη στην<br>επόμενη έκδοση...</b>");
msgBox.setIconPixmap(QIcon(":/icons/Pictures/Webcam.png").pixmap(QSize(128,128)));
msgBox.setWindowIcon(QIcon(":/icons/Pictures/Webcam.png"));
        msgBox.exec();
But I get Chinese/strange symbols and not the greek ones I expected. How can this solved??