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graphical interface elements

The checkbox is an on/off, flip/flop toggle

The great thing about the checkbox graphical interface element is that it can
be in only one of two states, either on or off. Depending on the current state
of the checkbox, an object can be set to either 1 for “on” or 0 for “off.”

Whoo hoo! Set
that object to
1, baby!

Set me, checkbox,
Click the checkbox set me... I can be
to “tick” it and set either 1 or 0.
the object to “on”.

Click the checkbox to
“untick” it and set the
object to “off”.

Ah, phooey! Set
that object to 0,
which is, like, oooh.

In tkinter, checkboxes are created using Checkbutton(), and they can be
associated with a tkinter IntVar, first introduced in Chapter 7. The tkinter
Checkbutton() is either on or off and sets the associated IntVar to
either 1 or 0, which is perfect for what you need.

Let’s look at using a checkbox in tkinter.

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