tkinter组建Listbox练习

import tkinter as tk

win=tk.Tk()

win.title('列表组件')

win.geometry('300x400')

def select():

    value=lb.get(lb.curselection())

    var.set('您选择的是：%s'%value)

var=tk.StringVar()

label=tk.Label(win,bg='green',width=18,height=2,font=('Arial',12),textvariable=var)

label.pack()

btn=tk.Button(win,text='选择',bg='yellow',command=select)

btn.pack()

var2=tk.StringVar()

var2.set((1,2,3))

lb=tk.Listbox(win,listvariable=var2)

lb.pack()

win.mainloop()