Chapter 13, Problem 9SA

Program Plan Intro

“IntVar” object:

A class named “IntVar” can be used along with the “tkinter” radiobutton widget.

• • The “IntVar” object can be associated with a group of check buttons with unique values that are assigned to each individual option that is specified.

“Checkbutton”:

The “Checkbuttons” are used to select any or the entire buttons that are displayed in the groups so that “checkbutton” is not mutually an exclusive selection.

• • “Checkbutton” widget contains the user to read and select a two-way choice.
• • When the “Checkbutton” is selected, the associated “IntVar” object will hold the value “1”; if it is not selected, then the associated “IntVar” object will hold the value “0”.
• • The “Checkbutton” can be implemented to multiple choice input widgets by assigning each button a variable of its own process.
• • The “Checkbutton” is very similar to the “radiobutton”; when one choice is selected, the others in the group can be deselected, and it can make the buttons be mutually exclusive from each other.