Binding event through class

[BaptisteBodinIP]

Hi, I'm trying to bind keys to trigger a function, but my main_frame is initialized in a different class than the one where I want to bind an event, so when I press the key, nothing happens.

Where I bind

self.main_frame.bind("<KeyPress-1>", lambda e: yes_but_command())
        self.main_frame.bind("<KeyPress-2>", lambda e: nop_but_command())
        if self.question_id != 0 and self.question_id != 4:
            self.main_frame.bind("<KeyPress-3>", lambda e: choice_cam_but_command())
        else:
            self.main_frame.unbind("<KeyPress-3>")

My main class

class Main(ctk.CTk):
    def __init__(self):
        super().__init__()

        self.title("TEst")

        # Interface principale
        self.main_frame = ctk.CTkFrame(self)
        self.main_frame.pack(expand=True, fill="x")
        # Définir la taille de la fenêtre pour qu'elle occupe tout l'écran
        self.geometry(f"{self.winfo_screenwidth()}x{self.winfo_screenheight()}")
        self.main_frame.lift()
        self.run()

And when i call my other class, i send self.main_frame

Thanks 🫶

[BaptisteBodinIP]

Finally, problem solved, I had to pass the entire instance of my main class to my other class.