Can I create a sub-window with a sub-window as the parent in Toplevel() of Tkinter?

Asked 2 years ago, Updated 2 years ago, 295 views

Tkinter's Toplevel() allows you to create a sub-window with the main window as the parent, but is it not possible to create a sub-window with the sub-window as the parent?Please let me know if there is any way.

python tkinter

2022-09-30 22:01

1 Answers

Toplevel has the master argument that specifies the parent window.
This allows you to create subwindows with subwindows as the parent.

sample code

from tkinter import* 
from tkinter import ttk

w1 = Tk()
w1.geometry("240x64+100+100")
ttk.Label(w1,text="Close parent, child and grandchild close" ).grid(row=0, column=0)

# Specify w1 in parent window
w2 = Toplevel (master = w1)
w2.geometry("240x64+100+200")
ttk.Label(w2,text="Close child, grandchild will close" ).grid(row=0, column=0)

# Specify w2 in parent window
w3 = Toplevel (master = w2)
w3.geometry("240x64+100+300")
ttk.Label(w3,text="Closing a grandchild means closing a grandchild." ).grid(row=0, column=0)

w1.mainloop()

(Added after receiving comments)

You can use the code below to invoke the grandchild window with the buttons on the child window.

from tkinter import* 
from tkinter import ttk
from functools import partial

w1 = Tk()
w1.geometry("240x64+100+100")
ttk.Label(w1,text="Close parent, child and grandchild close" ).grid(row=0, column=0)

# a function that increases the number of children when a button is pressed
def call_child(w_master:Misc):
    # Specify w2 in parent window
    w_child=Toplevel(master=w_master)
    w_child.geometry("240x64")
    ttk.Button(w_child, text="Call child.", command=partial(call_child, w_child)) .grid(row=0, column=0)

# Specify w1 in parent window
w2 = Toplevel (master = w1)
w2.geometry("240x64+100+200")
ttk.Label(w2,text="Close child, grandchild will close" ).grid(row=0, column=0)
ttk.Button(w2, text="Call child.", command=partial(call_child,w2)).grid(row=1, column=0)

# Specify w2 in parent window
w3 = Toplevel (master = w2)
w3.geometry("240x64+100+300")
ttk.Label(w3,text="Closing a grandchild means closing a grandchild." ).grid(row=0, column=0)

w1.mainloop()


2022-09-30 22:01

If you have any answers or tips


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