Py_Tkinter_GUI_Menu.py

from tkinter import *                              # get widget classes
from tkinter.messagebox import *                   # get standard dialogs

class NewMenuDemo(Frame):                          # an extended frame
    def __init__(self, parent=None):               # attach to top-level?
        Frame.__init__(self, parent)               # do superclass init
        self.pack(expand=YES, fill=BOTH)
        self.createWidgets()                       # attach frames/widgets
        self.master.title("Toolbars and Menus")    # set window-manager info
        self.master.iconname("tkpython")           # label when iconified

    def createWidgets(self):
        self.makeMenuBar()
        self.makeToolBar()
        L = Label(self, text='Menu and Toolbar Demo')
        L.config(relief=SUNKEN, width=40, height=10, bg='white')
        L.pack(expand=YES, fill=BOTH)

    def makeToolBar(self):
        toolbar = Frame(self, cursor='hand2', relief=SUNKEN, bd=2)
        toolbar.pack(side=BOTTOM, fill=X)
        Button(toolbar, text='Quit',  command=self.quit    ).pack(side=RIGHT)
        Button(toolbar, text='Hello', command=self.greeting).pack(side=LEFT)

    def makeMenuBar(self):
        self.menubar = Menu(self.master)
        self.master.config(menu=self.menubar)    # master=top-level window
        self.fileMenu()
        self.editMenu()

    def fileMenu(self):
        pulldown = Menu(self.menubar)
        pulldown.add_command(label='Open...', command=self.notdone)
        pulldown.add_command(label='Quit',    command=self.quit)
        self.menubar.add_cascade(label='File', underline=0, menu=pulldown)

    def editMenu(self):
        pulldown = Menu(self.menubar)
        pulldown.add_command(label='Paste',   command=self.notdone)
        pulldown.add_command(label='Spam',    command=self.greeting)
        pulldown.add_separator()
        pulldown.add_command(label='Delete',  command=self.greeting)
        pulldown.entryconfig(4, state=DISABLED)
        self.menubar.add_cascade(label='Edit', underline=0, menu=pulldown)

    def greeting(self):
        showinfo('greeting', 'Greetings')
    def notdone(self):
        showerror('Not implemented', 'Not yet available')
    def quit(self):
        if askyesno('Verify quit', 'Are you sure you want to quit?'):
            Frame.quit(self)

if __name__ == '__main__':  NewMenuDemo().mainloop()  # if I'm run as a script