Creates the mime data for the different items.
        
        :param      items | [<QListWidgetItem>, ..]
        
        :return     <QMimeData>

def mimeData( self, items ):
        """
        Creates the mime data for the different items.
        
        :param      items | [<QListWidgetItem>, ..]
        
        :return     <QMimeData>
        """
        text = []
        for item in items:
            text.append(nativestring(item.text()))
        
        data = QMimeData()
        data.setText(','.join(text))
        return data