[Tkinter] Transparent Canvas

[finndude]

I cannot find a way to set the canvas background color to transparent. You could inherit the window's background. That will not solve the problem of drawing a canvas on a complex background, but it will work for your example.

import tkinter as tk
 
window = tk.Tk()
window.title("Drawing Shapes on Button Press")
window.geometry("300x300")
window.configure(background="green")
 
def circle():
    c = tk.Canvas(window, width=100, height=100, background=window["bg"], bd=0, highlightthickness=0)
    c.pack()
    c.create_oval(0, 0, 99, 99)
 
tk.Button(window, text="Circle", command=circle).pack()
 
window.mainloop()

For drawing on a complex background my suggestion is make a big canvas and draw everything on the canvas, including things like buttons and labels if need be.

import tkinter as tk
from random import randint

def circle():
    x = randint(0, 299)
    y = randint(0, 299)
    diameter = randint(10, 100)
    canvas.create_oval(x, y, x + diameter, y + diameter)


def rectangle():
    x = randint(0, 299)
    y = randint(0, 299)
    canvas.create_rectangle(x, y, x + randint(10, 100), y + randint(10, 100))


def text():
    x = randint(0, 299)
    y = randint(0, 299)
    canvas.create_text(x, y, text=f"x={x}, y={y}")


window = tk.Tk()
window.title("Drawing Shapes on Button Press")
window.geometry("300x300")
canvas = tk.Canvas(window, bg="green")
canvas.pack(expand=True, fill=tk.BOTH)
tk.Button(canvas, text="Circle", command=circle).pack(pady=10)
tk.Button(canvas, text="Rectangle", command=rectangle).pack()
tk.Button(canvas, text="Text", command=text).pack(pady=10)

window.mainloop()

Hi,

Think this is what Im gonna try. The idea is if i had an image in the background i can still see the image with the circle on top. This looks like a possible solution.