tkinter笔记七

from tkinter import * # get widget classes
from tkinter.messagebox import * # get standard dialogs
def notdone():
    showerror(‘Not implemented‘, ‘Not yet available‘)
def makemenu(win):
    top = Menu(win) # win=top-level window
    win.config(menu=top) # set its menu option
    file = Menu(top)
    file.add_command(label=‘New...‘, command=notdone, underline=0)
    file.add_command(label=‘Open...‘, command=notdone, underline=0)
    file.add_command(label=‘Quit‘, command=win.quit, underline=0)
    top.add_cascade(label=‘File‘, menu=file, underline=0)    
    edit = Menu(top, tearoff=False)
    edit.add_command(label=‘Cut‘, command=notdone, underline=0)
    edit.add_command(label=‘Paste‘, command=notdone, underline=0)
    edit.add_separator()
    top.add_cascade(label=‘Edit‘, menu=edit, underline=0)
    submenu = Menu(edit, tearoff=True)
    submenu.add_command(label=‘Spam‘, command=win.quit, underline=0)
    submenu.add_command(label=‘Eggs‘, command=notdone, underline=0)
    edit.add_cascade(label=‘Stuff‘, menu=submenu, underline=0)
    
if __name__ == ‘__main__‘:
    root = Tk() # or Toplevel()
    root.title(‘menu_win‘) # set window-mgr info
    makemenu(root) # associate a menu bar
    msg = Label(root, text=‘Window menu basics‘) # add something below
    msg.pack(expand=YES, fill=BOTH)
    msg.config(relief=SUNKEN, width=40, height=7, bg=‘beige‘)
    root.mainloop()
提示：
tearoff=False 消除菜单下的虚线
edit.add_separator() 在edit菜单下生成分隔线

top = Menu(win) # attach Menu to window
win.config(menu=top) # cross-link window to menu
file = Menu(top) # attach a Menu to top Menu
top.add_cascade(label=‘File‘, menu=file) # cross-link parent to child