tkinter Combobox

Combobox
values 设定可选内容
state  设定状态。readonly时只可选择，不可更改内容
.current 设定选择内容，参数为可选列表的0-index

有虚拟事件 "" 当列表选择时触发绑定函数

# -*- coding: utf-8 -*-
"""
Created on Thu Jan 31 16:04:51 2019

@author: Administrator
Spyder常用快捷键
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"""

from tkinter import *
from tkinter import ttk
from tkinter import messagebox


def show_msg(*arg):
    messagebox.showinfo('hello',players.get())

if __name__ =='__main__':
    root = Tk()
    root.geometry('800x600')
    root.title("事件测试")
    name = StringVar()
    players = ttk.Combobox(root,textvariable=name)   #下拉框选择
    players['values']=['成龙大哥','刘德华大哥','章子怡大姐']
    players.current(0)
    players.bind("<>",show_msg)  #事件的绑定
    players.grid(row=0,columns=1)
    
    players.pack()
    players.mainloop()