Book Image

Mastering GUI Programming with Python

By : Alan D. Moore
5 (2)
Book Image

Mastering GUI Programming with Python

5 (2)
By: Alan D. Moore

Overview of this book

PyQt5 has long been the most powerful and comprehensive GUI framework available for Python, yet there is a lack of cohesive resources available for Python programmers to learn how to use it. This book will be your comprehensive guide to exploring GUI development with PyQt5. You will get started with an introduction to PyQt5, before going on to develop stunning GUIs with modern features. You will learn how to build forms using QWidgets and delve into important aspects of GUI development such as layouts, size policies, and event-driven programming. Moving ahead, you’ll discover PyQt5’s most powerful features through chapters on audio-visual programming with QtMultimedia, database-driven software with QtSQL, and web browsing with QtWebEngine. Next, in-depth coverage of multithreading and asynchronous programming will help you run tasks asynchronously and build high-concurrency processes with ease. In later chapters, you’ll gain insights into QOpenGLWidget, along with mastering techniques for creating 2D graphics with QPainter. You’ll also explore PyQt on a Raspberry Pi and interface it with remote systems using QtNetwork. Finally, you will learn how to distribute your applications using setuptools and PyInstaller. By the end of this book, you will have the skills you need to develop robust GUI applications using PyQt.
Table of Contents (24 chapters)
Free Chapter
1
Section 1: Deep Dive into PyQt
8
Section 2: Working with External Resources
12
Section 3: Unraveling Advanced Qt Implementations
22
Upgrading Raspbian 9 to Raspbian 10

Automating our calendar form

To see how signal and slot usage works in an actual application, let's take the calendar form that we built in Chapter 2, Building Forms with QtWidgets, and turn it into a working calendar application. To do this, we're going to need to make the following changes:

  • The app needs a way to store events that we enter.
  • The All Day checkbox should disable the time entry when checked.
  • Selecting a day on the calendar should populate the event list with the events for that day.
  • Selecting an event in the event list should populate the form with the event's details.
  • Clicking Add/Update should update the saved event details if an event was selected, or add a new event if one was not.
  • Clicking Delete should remove the selected event.
  • If no event is selected, Delete should be disabled.
  • Selecting New… as a category should open a dialog allowing...