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Pyside GUI Application Development- Second Edition

Pyside GUI Application Development- Second Edition - Second Edition

By : Loganathan, Jaganmohan
2.7 (3)
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Pyside GUI Application Development- Second Edition

Pyside GUI Application Development- Second Edition

2.7 (3)
By: Loganathan, Jaganmohan
Buy this Book

Overview of this book

Elegantly-built GUI applications are always a massive hit among users. PySide is an open source software project that provides Python bindings for the Qt cross-platform UI framework. Combining the power of Qt and Python, PySide provides easy access to the Qt framework for Python developers and also acts as an excellent rapid application development platform. This book will take you through everything you need to know to develop UI applications. You will learn about installing and building PySide in various major operating systems as well as the basics of GUI programming. The book will then move on to discuss event management, signals and slots, and the widgets and dialogs available with PySide. Database interaction and manipulation is also covered. By the end of this book, you will be able to program GUI applications efficiently and master how to develop your own applications and how to run them across platforms.
Table of Contents (8 chapters)
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Preface
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Preface
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What this book covers
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What you need for this book
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Who this book is for
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Conventions
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Reader feedback
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Customer support
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1
1. Getting Started with PySide
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1. Getting Started with PySide
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Introducing PySide
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Hello, GUI
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Setting up PySide
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Installing PySide using Windows
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Installing PySide using Mac OS X
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Installing PySide using Linux
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Building PySide on Windows
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Building PySide on Linux
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Building PySide
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Importing PySide objects
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First PySide application
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Exception handling as a practice
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Summary
2
2. Entering through Windows
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2. Entering through Windows
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Creating a simple window
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Creating the application icon
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Showing a tooltip
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Adding a button
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Centering the window on the screen
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About box
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Tracking time using timers
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Windows style
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Summary
3
3. Main Windows and Layout Management
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3. Main Windows and Layout Management
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Creating the main window
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Status bar
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Toolbar
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Layout management
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SDI and MDI
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A simple text editor
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Summary
4
4. Events and Signals
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4. Events and Signals
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Event management
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Signals and slots
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Drag and drop technique
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Drawing shapes
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Graphics and effects
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Summary
5
5. Dialogs and Widgets
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5. Dialogs and Widgets
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Built-in dialogs
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Custom dialogs
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Widgets at a glance
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Custom widget
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Implementation of MDI
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Summary
6
6. Database Handling
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6. Database Handling
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Connecting to the database
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Executing SQL queries
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Table and form views
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Table view
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Form view
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Viewing relations in table views
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Summary
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Index
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Index

Connecting to the database

A database connection is represented by the PySide.QtSql.QSqlDatabase class. This class provides an interface to access a database through the connection. The connection is accomplished through Qt's supported database drivers, which are derived from the PySide.QtSql.QSqlDriver class. The QSqlDriver class is an abstract base class to access specific SQL Databases and should be used with QSqlDatabase. As with any other PySide feature that supports customization, it is also possible to create our own SQL drivers by subclassing the QSqlDriver class and reimplementing its virtual functions.

Before explaining the concept of connecting to databases, we will look at the types of database access that is provided by PySide. The access is provided at two levels, a high-level access using QSqlTableModel or QSqlRelationalTableModel, and a low-level access using QSqlQuery. The former one uses model/view architecture and provides a high-level interface from which to read and write...

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