Chapter 1, Problem 3WDT

Program Plan Intro

Control:

• Controls are logical or common name of the objects used in Graphical User Interface (GUI).
• The different types of controls include:
  • Form control
  • TextBox control
  • Label control
  • Button control
• Rules of naming controls:
  • The rules to be followed while naming controls are as follows:
    • The name shouldn’t include any spaces.
    • The first character must be chosen from the alphabet “a” to “z” or “A” to “Z” or the underscore symbol “_”.
    • After the first character, the letters from “a” to “z” or “A” to “Z” or the underscore symbol “_” or the digits from “0” to “9” can be used.
      • Control names are also termed as identifiers.

Explanation of Solution

2.

A Button control that, when clicked, calculates an annual interest rate:

• There are four types of controls, and Button is one of the types.
• It refers to the buttons, which perform operations when the mouse is clicked...

Explanation of Solution

3.

A Label control used to display the total of an order:

• There are four types of controls, and Label is one of the types.
• It refers to the areas, which display text...

Explanation of Solution

4.

A Button control that clears all the input fields on a form:

• There are four types of controls, and Button is one of the types.
• It refers to the buttons, which perform operations when the mouse is clicked...