1. CHAPTER FOUR VARIABLES AND CONSTANTS
COMPUTER MATHEMATICS
CHAPTER FOUR
VARIABLES AND CONSTANTS

2. OPTION BUTTONS Referred to as radio buttons
Way to obtain input from the user
Grouped to provide a set of choices
Only one option button can be selected at one time

3. OPTION BUTTON PROPERTIES
Name – identifies the object and is used by the programmer; begins with opt.
Caption – text displayed on the option button label; can be changed at runtime
Value – True or False to display the option button as being selected or not ; only one option button can be True at any given time; changing the value of one button to True will automatically change the other button to False

4. OPTION BUTTONS A click event is usually coded for each button.
The click event is executed when the user clicks on an option button
A Frame – is a container object to group option buttons relative to a single choice
Frame must be created before any option buttons are added to the application
Frame properties – name beginning with fra; caption which is text as the frame label

5. LAB TIME
REVIEW # 11