How do I make the bg_color of a button widget in tkinter transparent

Question

import customtkinter as ctk
from tkinter import *
from PIL import Image, ImageTk


def resize_image(event=None):
    width, height = window.winfo_width(), window.winfo_height()
    resized_image = image.resize((width, height))
    photo = ImageTk.PhotoImage(resized_image)
    background.configure(image=photo)
    background.image = photo
window = ctk.CTk()
width = 1280
height = 720
window.geometry(f"{width}x{height}")
window.resizable(False, False)
window.wm_attributes('-transparentcolor', '#ab23ff')
image = Image.open("testImages/istockphoto-1185382671-612x612.jpg")
photo = ImageTk.PhotoImage(image)

background = ctk.CTkLabel(window, image=photo, text="")

background.configure(image=photo)

background.bind("<Configure>", resize_image)
background.place(x=0, y=0)

#frame = ctk.CTkFrame(window, width=1250, height=690, bg_color="gray")
#frame.place(x=15, y=15)


btn = ctk.CTkButton(window, text="Start", width=150, corner_radius=10, border_width=0, bg_color="#000000")
btn.place(x=460, y=360)`

I tried looking through documentation but nothing I find seems to work and theres nothing specific in the documentation about transparency.

Answer 1

if you need more help, you can use the "pywinstyles" method. It makes a certain color invisible, after that you can use it in a button.

import pywinstyles

btn = ctk.CTkButton(window, text="Start", width=150, corner_radius=10, 
border_width=0, bg_color="#000001") #Your color that becomes invisible
btn.place(x=460, y=360)

pywinstyles.set_opacity(button, color="#000001") #You specify the color that 
will be invisible

Important: it doesn't work with Tkinter, you need to use Tk or CTk!!!