python - Cannot bind NumPad minus key on Linux with Tkinter

Question

I encountered an issue regarding KeyPress binds in tkinter when switching between Windows and Linux while using a NumPad. Using self.bind("-", function) works on Windows, however is not triggered on Linux.

With the following code snippet I found out that the events of a keyboard-minus differs from a numpad-minus.

Code:

import tkinter as tk


class App(tk.Tk):
    def __init__(self):
        tk.Tk.__init__(self)
        self.bind("<Key>", self.action)
        self.count = 0

    def action(self, e):
        print(e)
        self.count += 1


app = App()
app.mainloop() 

Output:

NumPad:
<KeyPress event state=Mod2 keysym=KP_Subtract keycode=82 char=‘-‘ x=323 y=-184

KeyBoard:
<KeyPress event state=Mod2 Keysym=minus keycode=61 char=’-‘ x=376 y=-27 

Is there a way to make Linux recognize the "-" char in a tkinter bind whether it is from keyboard or NumPad?

Answer 1

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