code: def wm_delete_window(self):
      if self.cancel is None:
          self.root.bell()
      else:
          self.done(self.cancel)
  
imports: from tkinter import *
  from tkinter import _get_temp_root, _destroy_temp_root
  from tkinter import messagebox
label_desc: Use image node_id 4 for calling the SimpleDialog obj's underlying member method code with example usage: obj.wm_delete_window() without return types