docs: 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')