confirmation alert show

Question

On our map editor class, we made a close button and assigned it to show the confirmation alert (that makes sure if user wants to save or discard the project) when clicked and behave accordingly. However, I don't know how to make confirmation alert to pop up when a user clicks exit button(the red x to close the window on top).

Answer 1

I used the setOnCloseRequest which uses an event handler to handle what happens if their is an external request to close the window(clicking the exit button).