from tkinter import *

a=Tk()

a.title('复选框')

a.geometry('400x400')

def f():

def f1():

a.destroy()

def f2():

t.destroy()

t=Toplevel(a)

t.geometry('100x100')

f=Frame(t)

f.pack()

l1=Label(f,text='确定要退出？')

l1.grid(row=0,column=0,columnspan=2)

B1=Button(f,text='确定',command=f1)

B1.grid(row=1,column=0)

B2=Button(f,text='取消',command=f2)

B2.grid(row=1,column=1)

m=Menu(a)

m1=Menu(m)

m.add_cascade(label='新建',menu=m1)

for i in ['1111','2222','3333','4444']:

m1.add_command(label=i)

m2=Menu(a)

m.add_cascade(label='编辑',menu=m2)

for i in ['11','22','33','44']:

m2.add_command(label=i)

m3=Menu(a)

m.add_command(label='退出',command=f)

a.config(menu=m)