Starting Out with Programming Logic and Design (5th Edition) (What's New in Computer Science)
Starting Out with Programming Logic and Design (5th Edition) (What's New in Computer Science)
5th Edition
ISBN: 9780134801155
Author: Tony Gaddis
Publisher: PEARSON
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Chapter 15.4, Problem 15.21CP
Program Plan Intro

Event handler:

An event handler is a module is implemented in python program executes automatically when a particular event has occurred.

  • If user need a program to execute an operation at that time a particular event occurs, user must create an event handler that reply at that time of event takes place.
  • Event can be pressing the key or mouse operation by the user. To deal this type of operation is considered as event handlers.
    • If the defined event occurs, then call the handler function with help of object of event.
  • The following format is a general format for event handler.

Module ComponentName_EventName()

Statement

End Module

Where,

  • ComponentName indicates the component name.
  • EventName indicates event name which occurred.

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Chapter 15 Solutions

Starting Out with Programming Logic and Design (5th Edition) (What's New in Computer Science)

Ch. 15.3 - Prob. 15.11CPCh. 15.3 - Prob. 15.12CPCh. 15.3 - Look at the following pseudocode and then answer...Ch. 15.3 - Prob. 15.14CPCh. 15.4 - Prob. 15.15CPCh. 15.4 - Prob. 15.16CPCh. 15.4 - Prob. 15.17CPCh. 15.4 - Prob. 15.18CPCh. 15.4 - Prob. 15.19CPCh. 15.4 - Prob. 15.20CPCh. 15.4 - Prob. 15.21CPCh. 15 - The _________ is the part of a computer with which...Ch. 15 - Before GUIs became popular, the _____ interface...Ch. 15 - Prob. 3MCCh. 15 - A type of program that is typically event-driven...Ch. 15 - An item that appears in a programs graphical user...Ch. 15 - By specifying characteristics such as color, size,...Ch. 15 - An _____ is an action that takes place within a...Ch. 15 - A(n) _____ is a module that automatically executes...Ch. 15 - In our pseudocode, the _____ module executes...Ch. 15 - The ______________ component that we discussed in...Ch. 15 - Many computer users, especially beginners, find...Ch. 15 - Writing a GUI program today is complex and time...Ch. 15 - A components Text property typically holds string...Ch. 15 - Predefined names are given to all of the events...Ch. 15 - A user interface flow diagram shows how a GUI...Ch. 15 - Prob. 6TFCh. 15 - When developing GUTs for mobile devices and...Ch. 15 - Prob. 1SACh. 15 - What determines how a component appears on the...Ch. 15 - Prob. 3SACh. 15 - Prob. 4SACh. 15 - What is a non-visual component? Give an example of...Ch. 15 - Design an event handler that will execute when the...Ch. 15 - Design an event handler that will execute when the...Ch. 15 - The GUI for a mobile app has a Label component...Ch. 15 - The GUI for a mobile app has a Label component...Ch. 15 - Name and Address Design a GUI program that...Ch. 15 - Latin Translator Look at the following list of...Ch. 15 - Miles-per-Gallon Calculator Design a GUI program...Ch. 15 - Celsius to Fahrenheit Design a GUI program that...Ch. 15 - Property Tax A county collects property taxes on...
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