如何根据组合框选择更改多个标签？ [英] How to change multiple Labels based on Combobox selection?

问题描述

我想知道如何根据组合框下拉列表选择在不同的标签中具有多个值。例如，假设您有一个 Combobox ，其值是（ car ， house ，计算机）和多个标签，它们在选择组合框。如果选择 car ，则尺寸为：大，颜色：黑色等...

I would like yo know how to have multiple values in different labels depending on a Combobox drop down list selection. For instance, suppose you have one Combobox with the values (car, house, computer) and multiple Labels which reflect different sizes and colors when selecting Combobox. If I select car, I will have for size: big, color: black and so on...

推荐答案

Combobox小部件会生成虚拟事件< ;< ComboboxSelected>> ，您可以根据当前值更改标签的选项：

The Combobox widget generates the virtual event <<ComboboxSelected>>, which you can use to change the options of the labels according to the current value:

import Tkinter as tk
import ttk

values = ['car', 'house', 'computer']
root = tk.Tk()
labels = dict((value, tk.Label(root, text=value)) for value in values)

def handler(event):
    current = combobox.current()
    if current != -1:
        for label in labels.values():
            label.config(relief='flat')
        value = values[current]
        label = labels[value]
        label.config(relief='raised')

combobox = ttk.Combobox(root, values=values)
combobox.bind('<<ComboboxSelected>>', handler)
combobox.pack()
for value in labels:
    labels[value].pack()

root.mainloop()

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