Jan-11-2022, 05:54 PM
I'm not sure that I understand your question. This is my attempt to answer this question: "I have two combo boxes. When I change the value in one of the combo boxes I want to change the choices displayed in a second combo box." If that is the wrong question please clarify.
Where is the code where you update the fields in the combo box? Each time you want a combo box to list different values you need to do something like this:
Where is the code where you update the fields in the combo box? Each time you want a combo box to list different values you need to do something like this:
cboTask["values"] = dataDid you leave this part out of your post, or is this what you are missing? In this example changing the abox selection loads a different set of values in bbox.
import tkinter as tk
from tkinter import ttk
"""Mapping of bbox choices based on abox selection"""
choices = {
"A":["1", "2", "3"],
"B":["4", "6", "7"],
"C":["8", "8", "9"],
}
def aselected(box, var, values):
"""I get called when the abox selection changes"""
box["values"] = values
var.set(values[0])
root = tk.Tk()
key = list(choices.keys())[0]
value = choices[key]
avar = tk.StringVar(value=key)
bvar = tk.StringVar(value=value[0])
abox = ttk.Combobox(root, textvariable=avar, values=list(choices.keys()))
bbox = ttk.Combobox(root, textvariable=bvar, values=value)
abox.bind('<<ComboboxSelected>>', lambda event: aselected(bbox, bvar, choices[avar.get()]))
bbox.bind('<<ComboboxSelected>>', lambda event: print(bvar.get()))
abox.pack()
bbox.pack()
root.mainloop()