Python tkinter 组合框

当我单击组合框的名称而不使用“检查”等按钮来显示值时，我想填写我的条目。我怎样才能做到这一点？

import tkinter as tk
from tkinter import ttk
import csv

root = tk.Tk()
cb = ttk.Combobox(root,state='readonly')
labName = ttk.Label(root,text='Names: ')
labTel = ttk.Label(root,text='TelNum:')
labCity = ttk.Label(root,text='City: ')
entTel = ttk.Entry(root,state='readonly')
entCity = ttk.Entry(root,state='readonly')

with open('file.csv','r',newline='') as file:
    reader = csv.reader(file,delimiter='\t')    


cb.grid(row=0,column=1)
labName.grid(row=0,column=0)
labTel.grid(row=1,column=0)
entTel.grid(row=1,column=1)
labCity.grid(row=2,column=0)
entCity.grid(row=2,column=1)

您可以使用bind()执行函数on_select当您选择列表中的元素时。

cb.bind('<<ComboboxSelected>>', on_select)

在这个函数中你可以填写Entry.

来自 GitHub 的旧示例：组合框获取选择 https://github.com/furas/python-examples/blob/master/tkinter/combobox-get-selection/main.py

#!/usr/bin/env python3

import tkinter as tk
import tkinter.ttk as ttk

# --- functions ---

def on_select(event=None):
    print('----------------------------')

    if event: # <-- this works only with bind because `command=` doesn't send event
        print("event.widget:", event.widget.get())

    for i, x in enumerate(all_comboboxes):
        print("all_comboboxes[%d]: %s" % (i, x.get()))

# --- main ---

root = tk.Tk()

all_comboboxes = []

cb = ttk.Combobox(root, values=("1", "2", "3", "4", "5"))
cb.set("1")
cb.pack()
cb.bind('<<ComboboxSelected>>', on_select)

all_comboboxes.append(cb)

cb = ttk.Combobox(root, values=("A", "B", "C", "D", "E"))
cb.set("A")
cb.pack()
cb.bind('<<ComboboxSelected>>', on_select)

all_comboboxes.append(cb)

b = tk.Button(root, text="Show all selections", command=on_select)
b.pack()

root.mainloop()

EDIT:

Line if event: in on_select仅当您使用时才有效bind()因为它执行带有事件信息的函数。command=执行不带参数的函数，然后设置even=None进而if event:总是False.