Python TKInter destroy not working

Question

I am trying to close a TKInter window with self.win.destroy .

The following error is thrown when bind ing the event to a button:

...
Can't invoke "bind" command: application has been destroyed
During handling the above exception, another exception occured:
...
Can't invoke "destroy" command: application has been destroyed

How do I bind a "close-window" command to the button?

Answer 1

Do this:

button['command'] = root_window.destroy # give it the function
# when the button is pressed the call () is done

Do not do this:

button.bind('<Button-1>', root_window.destroy()) # () makes the call

because

root_window.destroy()

destroys the window before button.bind is called.

This is also wrong: but does not destroy the root window:

button.bind('<Button-1>', root_window.destroy)

because

• the button can not be triggered with the keyboard
• root_window.destroy(event) is called but root.destroy() only takes one argument.

This does also work:

button.bind('<Button-1>', lambda event: root_window.destroy())