Tkinter Menubar

<pre class="brush:php;toolbar:false;">window = tk.Tk()window.title('my window')window.geometry('500x500')

<pre class="brush:php;toolbar:false;">var1 = tk.StringVar()l = tk.Label(window, bg='yellow', width=4, textvariable=var1)l.pack()

<pre class="brush:php;toolbar:false;">window.mainloop()  # 不断刷新主窗口

<pre class="brush:php;toolbar:false;">menubar = tk.Menu(window)filemenu = tk.Menu(menubar, tearoff=0)menubar.add_cascade(label='File', menu=filemenu)filemenu.add_command(label='New', command=do_job)filemenu.add_command(label='Open', command=do_job)filemenu.add_command(label='Save', command=do_job)filemenu.add_separator()filemenu.add_command(label='Exit', command=window.quit)submenu = tk.Menu(filemenu)filemenu.add_cascade(label='Import', menu=submenu, underline=0)submenu.add_command(label="Submenu1", command=do_job)editmenu = tk.Menu(menubar, tearoff=0)menubar.add_cascade(label='Edit', menu=editmenu)editmenu.add_command(label='Cut', command=do_job)editmenu.add_command(label='Copy', command=do_job)editmenu.add_command(label='Paste', command=do_job)window.config(menu=menubar)

<pre class="brush:php;toolbar:false;">counter = 0def do_job():    global counter    l.config(text='do '+ str(counter))    counter+=1