messagebox error: AttributeError: 'str' object has no attribute 'invoke'

Desktop (please complete the following information):

ttkbootstrap Version [1.8.0] --> pip3 install ttkbootstrap-master.zip OS: Linux Mint Cinnamon x64 X11

Describe the bug

When pressing the Enter button in a message box, it displays error:

~/.local/lib/python3.8/site-packages/ttkbootstrap/window.py", line 45, in <lambda> window.bind_class(“TButton”, “<Key-Return>”, lambda event: event.widget.invoke()) AttributeError: ‘str’ object has no attribute ‘invoke’

To Reproduce

import tkinter as tk
import ttkbootstrap as ttk
from ttkbootstrap.constants import *
from tkinter import messagebox as msg

root = ttk.Window()

def show_msg():
    msg.showwarning('Warning', 'Test!', parent=root)
    return

b1 = ttk.Button(root, text="Button 1", bootstyle=SUCCESS, command=show_msg)
b1.pack(side=LEFT, padx=5, pady=10)

root.mainloop()

Using the code above,

1. Click on the Button 1 button
2. a message will be displayed on the screen
3. I press the “Enter” key (Return) and the error occurs.

Expected behavior

Pressing Enter should close the message box without displaying an error.

And as soon as you have time, if possible, also ‘bind’ the <KP_Enter> key in the same event on the <Return> screen for that event

Screenshots

No response

Additional context

No response

[israel-dryer]

@antrrax, sorry, forgot to push the change to that branch. It should be there now.

[israel-dryer]

@antrrax, I setup a Linux VM and tested it there. The messagebox you are using has an embedded Tcl/Tk button. So, what I did was called the invoke command on the Tcl/Tk widget directly when there is not an associated Python object. This should work for any embedded button that is not represented by a Python object. Try installing this again and see if it works on your distro:

python -m pip install --upgrade git+https://github.com/israel-dryer/ttkbootstrap.git@fix_default_enter_button_key_binding