Combobox就是组合框，是tkinter.ttk的空件，所以要先import才可以用。他跟openmenu很像，也是一种下拉式选单。

♠♣今天的文章大纲♥♦

• 常见参数
• 建立Combobox
• 使用get()
• 绑定Combobox

常见参数

语法:Combobox( master, option, ... )

建立Combobox

import tkinter as tk
import tkinter.ttk as ttk

root = tk.Tk()
root.title('cuteluluWindow')
root.configure(bg="#7AFEC6")
root.iconbitmap('heart_green.ico')
root.geometry('300x100')


cb = ttk.Combobox (root)
cb.pack (pady = 10)

cb_value = ("Badminton", "baseball", "basketball"," football",
            " handball"," hockey"," table tennis"," tennis"," volleyball")
cb['value'] = cb_value
cb.current(0)

root.mainloop()

执行结果⬇⬇⬇

使用get()

用get获得内容

import tkinter as tk
from tkinter import ttk

root = tk.Tk()
root.title('cuteluluWindow')
root.configure(bg="#7AFEC6")
root.iconbitmap('heart_green.ico')
root.geometry('300x100')

def get():
    lb['text'] = str(cb.get())

cb = ttk.Combobox(root, state='readonly')
cb.pack()
cb['value'] = ("Badminton", "baseball", "basketball"," football",
            " handball"," hockey"," table tennis"," tennis"," volleyball")

lb = tk.Label(root, text="show here",fg="#FFAAD5", bg="#7AFEC6",font=("Ravie",10,"bold"))
lb.pack()
bt = tk.Button(root, text='Get', command=get)
bt.pack()

root.mainloop()

执行结果⬇⬇⬇

绑定Combobox

选项有改变时会产生虚拟事件，所以就用这个事件去做绑定。

cb.bind("<<ComboboxSelected>>", get)

今天的combobox跟昨天openmenu真的很像，不过combobox有一个绑定的方法，可以多练习看看喔~