Beginning PyQt: A Hands-on Approach to GUI Programming with PyQt6

Table of Contents
About the Author
About the Technical Reviewers
Acknowledgments
Introduction
Chapter 1: Getting Started with PyQt
	The PyQt Framework
		Why Choose PyQt?
		PyQt5 vs. PyQt6
	Installing Python 3 and PyQt6
		Checking Your Version of Python
		Installing PyQt6
	Introduction to User Interfaces
		What Is a Graphical User Interface?
		Concepts for Creating Good Interface Design
	Creating Your First GUI: An Empty Window
		Explanation for Creating an Empty Window
			Modifying the Window
	Summary
Chapter 2: Building a Simple GUI
	The QLabel Widget
		Explanation for Using QLabel
	Project 2.1 – User Profile GUI
		Designing the User Profile GUI
		Explanation for the User Profile GUI
	Summary
Chapter 3: Adding More Functionality with Widgets
	Event Handlers and Signals and Slots
	The QPushButton Widget
		Explanation for Using QPushButton
	The QLineEdit Widget
		Explanation for Using QLineEdit
	The QCheckBox Widget
		Explanation for Using QCheckBox
	The QMessageBox Dialog
		Windows vs. Dialogs
		Explanation for Using QMessageBox
	Project 3.1 – Login GUI and Registration Dialog
		Designing the Login GUI and Registration Dialog
		Explanation for Creating the Login GUI
			How to Open a New Window or Dialog
			Using Event Handlers to Close a Window
		Explanation for Creating the Main Window
		Explanation for Creating the Registration Dialog
	Summary
Chapter 4: Learning About Layout Management
	Using Layout Managers in PyQt
	Absolute Positioning
	Horizontal and Vertical Layouts with Box Layouts
		Explanation for QHBoxLayout
		Explanation for QVBoxLayout
			The QButtonGroup Class
	Creating Nested Layouts
		Explanation for Nested Layouts
			The QSpinBox and QComboBox Widgets
			Combining Layouts and Arranging Widgets
	Arranging Widgets in Grids with QGridLayout
		Explanation for QGridLayout
			The QTextEdit Widget
			Adding Widgets and Spanning Rows and Columns in QGridLayout
			Finding Child Widgets in a Layout
	Building Forms with QFormLayout
		Explanation for QFormLayout
			Adding Widgets and Layouts to QFormLayout
	Managing Pages with QStackedLayout
		Explanation for QStackedLayout
	Additional Tips for Managing Space
		Explanation for Managing Space
			Setting Content Margins
	Summary
Chapter 5: Menus, Toolbars, and More
	Common Practices for Creating Menus
	Creating a Simple Menu Bar
		Explanation for Creating a Menu Bar
			QMainWindow vs. QWidget
			Creating the Menu Bar and Adding Actions
	Using Icons and the QIcon Class
		Explanation for Using Icons
		Setting the Central Widget
	Built-in Dialog Classes in PyQt
		The QFileDialog Class
		The QInputDialog Class
		The QFontDialog Class
		The QColorDialog Class
		The About QMessageBox
	Project 5.1 – Rich Text Notepad GUI
		Designing the Rich Text Notepad GUI
		Explanation for the Rich Text Notepad GUI
	Expanding the Features in a Main Window
		Explanation for Expanding the Features
			The QStatusBar Class
			Creating Submenus with Checkable Menu Items
			The QToolBar Class
			The QDockWidget Class
	Project 5.2 – Simple Photo Editor GUI
		Designing the Photo Editor GUI
		Explanation for the Photo Editor GUI
			Handling Images in the Photo Editor GUI
			The QPrinter Class
	Summary
Chapter 6: Styling Your GUIs
	What Are Styles in PyQt?
		Changing the Default Style
	Modifying Widget Appearances
		Using HTML to Change the Look of Text
		Using Qt Style Sheets to Change the Look of Widgets
		Explanation for Using “Inline” Qt Style Sheets
			Customizing Styles to React to Interactions
		Explanation for Using “Embedded” Qt Style Sheets
			Applying Changes to Specific Widgets
	Organizing Widgets with Containers and Tabs
		The QRadioButton Widget
		The QGroupBox Class
		The QTabWidget Class
		Explanation for Using Containers and Tabs
	Project 6.1 – Food Ordering GUI
		Design the Food Ordering GUI
		Explanation for the Food Ordering GUI
			Creating the Style Sheet
			Building the Main Window
	CSS Properties Reference
	Summary
Chapter 7: Handling Events in PyQt
	Event Handling in PyQt
		Using Signals and Slots
		Using Event Handlers to Handle Events
		Difference Between Signals and Slots and Event Handlers
	Handling Key Events
		Explanation for Handling Key Events
	Handling Mouse Events
		Explanation for Handling Mouse Events
	Creating Custom Signals
		Explanation for Creating Custom Signals
	Summary
Chapter 8: Creating GUIs with Qt Designer
	Getting Started with Qt Designer
		Installing Qt Designer
		Exploring Qt Designer’s User Interface
		Qt Designer’s Editing Modes
	Creating an Application in Qt Designer
	Project 8.1 – Keypad GUI
		Explanation for the Keypad GUI
			Selecting a Form
			Arranging Objects on the Form
				The QFrame Class
				Applying Layouts in Qt Designer
			Editing the Properties of Objects
			Previewing Your GUI
			Connecting Signals and Slots in Qt Designer
			Creating Python Code from Qt Designer
				Generating Code Using pyuic6
				Creating a New Script to Build a GUI
	Extra Tips for Using Qt Designer
		Setting Up Main Windows and Menus
			Adding Menus and Submenus in Qt Designer
			Adding Toolbars in Qt Designer
			Adding Actions in Qt Designer
		Displaying Images in Qt Designer
		Adding Style Sheets in Qt Designer
	Summary
Chapter 9: Working with the Clipboard
	The QClipboard Class
		Explanation for Using QClipboard
	Project 9.1 – Sticky Notes GUI
		Explanation for the Sticky Notes GUI
	Summary
Chapter 10: Presenting Data in PyQt
	Quickly Handling Data in PyQt
	The QListWidget Class
		Explanation for Using QListWidget
	Drag and Drop in PyQt
		Explanation for Drag and Drop
	The QTableWidget Class
		Explanation for Using QTableWidget
			Creating Context Menus
			Using Built-in QTableWidget Methods to Edit Data
	The QTreeWidget Class
		Explanation for Using QTreeWidget
	Summary
Chapter 11: Graphics and Animation in PyQt
	Introduction to the QPainter Class
		Explanation for Using the QPainter Class
			The paintEvent() Event Handler
			The QColor, QPen, and QBrush Classes
			Drawing Points and Lines
			Drawing Text
			Drawing Two-Dimensional Shapes
			Drawing Gradients
	Project 11.1 – Painter GUI
	Explanation for the Painter GUI
		Creating the Canvas Class
			Handling Mouse Movement Events
		Creating the Painter GUI’s MainWindow Class
			Creating Tool Tips for Widgets
	Animating Scenes with QPropertyAnimation
	Explanation for Animating Scenes
	Introduction to Animating Widgets
		Explanation for Animating Widgets
	Summary
Chapter 12: Creating Custom Widgets
	Project 12.1 – RGB Slider Custom Widget
		PyQt’s Image Handling Classes
		The QSlider Widget
		Explanation for the RGB Slider Widget
			Updating the Sliders and Spin Boxes
			Updating the Colors
			Adding Methods to a Custom Widget
	RGB Slider Demo
		Explanation for the RGB Slider Demo
	Summary
Chapter 13: Working with Qt Quick
	Outlining QtQuick and QML
		Elements in QtQuick
		Introduction to the QML Language and Syntax
			Explanation for QML Language and Syntax
				Defining Properties of an Element
				The Coordinate System
	Building and Running QML Components
		Creating and Loading QML Components
			Explanation for Creating QML Components
				Positioning Elements with Anchors
				Adding Images in QtQuick
			Explanation for Loading QML Components
		Creating Reusable Components
			Explanation for Creating Custom Components
			Making an Element Interactive with Mouse Handling
		Layout Handling in QML
			Using Positioners to Position Elements
				Explanation for Using Column and Grid Positioners
		Building and Loading QML Windows
			QtQuick Controls
			Explanation for Creating QML Windows
				Creating a Menu Bar
				Signals and Signal Handlers
				Using FileDialog to Open Files
			Explanation for Loading QML Windows
	Using Transformations to Animate Objects
		Explanation for Simple Transformations
		Explanation for Using Transformations to Animate Objects
	Summary
Chapter 14: Introduction to Handling Databases
	Thinking About Data
	Introduction to Model/View Programming
		The Components of the Model/View Architecture
		PyQt’s Model/View Classes
		Explanation for Introduction to Model/View
			Setting Up the Model, View, and Selection Modes
			Working with CSV Files
	Working with SQL Databases in PyQt
		What Is SQL?
			Working with Database Management Systems
			Getting Familiar with SQL Commands
	Project 14.1 – Account Management GUI
		Explanation for Working with the QtSql Module
			Creating a Connection to a Database
			Building a Dataset with QSqlQuery
			Visualizing SQL Data Using SQLite
		Explanation for Querying a Database with QSqlQuery
		Working with the QSqlTableModel Class
			Explanation for Working with QSqlTableModel
		Working with the QSqlRelationalTableModel Class
			Explanation for Working with QSqlRelationalTableModel
				Adding Delegates to Edit Relational Data
		Explanation for the Account Management GUI
	Summary
Chapter 15: Managing Threads
	Introduction to Threading
		Threading in PyQt
		Methods for Processing Long Events in PyQt
	Project 15.1 – File Renaming GUI
		The QProgressBar Widget
		Explanation for File Renaming GUI
	Summary
Chapter 16: Extra Projects
	Project 16.1 – Directory Viewer GUI
		Explanation for the Directory Viewer GUI
	Project 16.2 – Camera GUI
		Explanation for the Camera GUI
	Project 16.3 – Simple Clock GUI
		Explanation for the Clock GUI
	Project 16.4 – Calendar GUI
		Explanation for the Calendar GUI
	Project 16.5 – Hangman GUI
		Explanation for the Hangman GUI
			Creating the Drawing Class
			Creating the Main Window Class
	Project 16.6 – Web Browser GUI
		Explanation for Web Browser GUI
			Creating Tabs for the Web Browser
				Creating the Web View
				Adding a QProgressBar to the Status Bar
	Project 16.7 – Tri-state QComboBox
	Explanation for the Tri-state QComboBox
	Summary
Appendix: Reference Guide for PyQt6
	Selected PyQt6 Modules
	Selected PyQt Classes
		Classes for Building a GUI Window
			QApplication
			QWidget
			Event Handling
			QMainWindow
			QDialog
		QPainter
		Layout Managers
		Button Widgets
		Input Widgets
			Combo Boxes
			QLineEdit
			Text Editing Widgets
			Spin Box Widgets
			Slider Widgets
		Display Widgets
			QLabel
			QProgressBar
			QGraphicsView
			QLCDNumber
		Item Views
		Container Widgets
			Containers with Frames
			QScrollArea
			QMdiArea
	QtQuick and QML
	Qt Style Sheets
	Qt Namespace
	Summary
Index