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)