def closeEvent(self, event):
        """
        things to be done when gui closes, like save the settings
        """

        self.script_thread.quit()
        self.read_probes.quit()
        if self.config_filename:
            fname = self.config_filename
            self.save_config(fname)

        event.accept()

        print('\n\n======================================================')
        print('================= Closing B26 Python LAB =============')
        print('======================================================\n\n')
things to be done when gui closes, like save the settings