I am developing an application in which I have to guide user how to perform a certain task. To do that I have to draw rectangle and show a box around widgets. Like this 
Till now I am able to develop tkinter transparent and topmost windows which is displaying the rectangle, here is the code:
import tkinter as tk
from tkinter import *
root = tk.Tk()
root.overrideredirect(True)
w = Canvas(root , bg = "white", bd=0, highlightthickness=0)
w.create_rectangle(30, 30, 100, 100)
root.lift()
root.wm_attributes("-topmost", True)
root.wm_attributes("-disabled", True)
root.wm_attributes("-transparentcolor", "white")
w.pack()
w.mainloop()
But how can I display that box with text in it, I have tried using dialogue box and message box but how can I customize them like this?
