Adding a menu and menu items

Menus offer a very compact way of presenting a large number of choices to the user without cluttering the interface. Tkinter offers the following two widgets to handle menus:

• The Menu widget: This appears at the top of applications, which is always visible to end users
• The menu Items: This shows up when a user clicks on a menu

We will use the following code to add Toplevel menu buttons:

my_menu = Menu(parent, **options)

For example, to add a File menu, we will use the following code:

# Adding Menubar in the widget
menu_bar = Menu(root)

file_menu = Menu(menu_bar, tearoff=0)
# all file menu-items will be added here next
menu_bar.add_cascade(label='File', menu=file_menu)
root.config(menu=menu_bar)

The following screenshot is the result of the preceding code:

Similarly, we will add the Edit, View, and About menus. See 2.01.py.

We will also define a constant, as follows:

PROGRAM_NAME = " Footprint Editor "

Then, we'll set the root window tile as follows...