Scrolling multiple Tkinter listboxes together

Question

I have multiple Tkinter listboxes that I have scrolling together using a single scrollbar, but I\'d ALSO like them to scroll together for mousewheel activity over any of the

Answer 1

I've made a very simple procedural solution. After looking on the tutorials point site for information on how to use the scrollbar for one widget (https://www.tutorialspoint.com/python/tk_scrollbar.htm), I adapted it to scroll through multiple text boxes at the same time (you can change the code so it uses list boxes). This solution will update all three textboxes when you use the scroll bar.

import tkinter as tk

HEIGHT = 200
WIDTH = 300

def scroll(x, y):
    l_textbox.yview(x,y)
    m_textbox.yview(x,y)
    r_textbox.yview(x,y)

root = tk.Tk()

canvas = tk.Canvas(root,height = HEIGHT, width = WIDTH, bg = "white")
canvas.pack()

frame = tk.Frame(root, bg ='white')
frame.place(relx=0,rely=0,relwidth=1,relheight=1)

scrollbar = tk.Scrollbar(frame)

l_label = tk.Label (frame, text = "Left")
l_label.place(relx=0, rely=0)

m_label = tk.Label (frame, text= "Middle")
m_label.place(relx=0.3, rely=0)

r_label = tk.Label (frame, text= "Right")
r_label.place(relx=0.6, rely=0)

l_textbox = tk.Text(frame, yscrollcommand = scrollbar.set)
l_textbox.config(font = ('Arial',9))
l_textbox.place(relx=0, rely=0.2,relwidth=0.3,relheight=0.8)

m_textbox = tk.Text(frame, yscrollcommand = scrollbar.set)
m_textbox.config(font = ('Arial',9))
m_textbox.place(relx=0.3, rely=0.2,relwidth=0.3,relheight=0.8)

r_textbox = tk.Text(frame, yscrollcommand = scrollbar.set)
r_textbox.config(font = ('Arial',9))
r_textbox.place(relx=0.6, rely=0.2,relwidth=0.3,relheight=0.8)

scrollbar.config( command = scroll)
scrollbar.place(relx = 0.9, relwidth = 0.1,relheight = 1)

for i in range(0, 100):
    l_textbox.insert(tk.INSERT, str(i)+"\n")
    m_textbox.insert(tk.INSERT, str(i)+"\n")
    r_textbox.insert(tk.INSERT, str(i)+"\n")
    l_textbox.place()
    m_textbox.place()
    r_textbox.place()

root.mainloop()