Python Tkinter Canvas fail to bind keyboard

Question

I\'ve been running a small script like this

from Tkinter import *
root = Tk()
def callback(event):
    print \"callback\"
w = Canvas(root, width=300, height         


        

Answer 1

There is a handy event in tkinter called "Enter", that tracks when the mouse enters a widget. If you bind it to the canvas, and in the binding's callback for that event you canvas.focus_set, then whenever the mouse is on the canvas you will have focus, and thus the keyboard bindings will work.

This will work even if the canvas looses focus (say through entering text in another widget), because when the mouse enters again the canvas, it will regain focus.