How to fit Tkinter listbox to contents
Resetting the listbox width worked for me. I used the Oblivion's answer and noticed that the width is always zero.
listbox = tk.Listbox(master, selectmode=tk.SINGLE)
listbox.config(width=0)
I also recommend to reset the root window geometry after reloading a content of the list. Otherwise if user manually extends a window the window would stop accommodate size of its content.
root.winfo_toplevel().wm_geometry("")
just give width and height 0 as below
listbox.config(width=0,height=0)
tkListAutoWidth.py
shows one way to do it.
Edit:
So you might have something along the lines of,
import tkinter as tk
from tkinter import font
class NewListbox(tk.Listbox):
def autowidth(self, maxwidth=100)
autowidth(self, maxwidth)
def autowidth(list, maxwidth=100):
f = font.Font(font=list.cget("font"))
pixels = 0
for item in list.get(0, "end"):
pixels = max(pixels, f.measure(item))
# bump listbox size until all entries fit
pixels = pixels + 10
width = int(list.cget("width"))
for w in range(0, maxwidth+1, 5):
if list.winfo_reqwidth() >= pixels:
break
list.config(width=width+w)
if __name__ == "__main__":
master = tk.Tk()
listbox = NewListbox(master, selectmode=tk.SINGLE)
# ...
# ...
keys = serverDict.keys()
for key in sorted(keys):
listbox.insert("end", key)
listbox.pack()
button = tk.Button(master, text="Execute", command=execute)
button.pack()
listbox.autowidth()
master.mainloop()