Book Image

Pyside GUI Application Development- Second Edition - Second Edition

By : Venkateshwaran Loganathan, Gopinath Jaganmohan
Book Image

Pyside GUI Application Development- Second Edition - Second Edition

By: Venkateshwaran Loganathan, Gopinath Jaganmohan

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 (13 chapters)

About box

Our next customization to our application is to add the functionality to display an about box. An about box is a dialog box that displays credits and revision information about the application. It may also include the installed version and copyright information. The QMessageBox class provides a built-in function for this. It has the following signature:

PySide.QtGui.QMessageBox.about(parent, title, text)

The parent parameter takes any valid QWidget object. The title and text can be supplied with the Unicode parameter. The about box will have a single button labeled OK. To explain its working, we will now add a button named About, and on the click signal of this button, we call a slot which will display the About box to the user. The code for this is as follows:

    def setAboutButton(self):
        """ Function to set About Button
        self.aboutButton = QPushButton("About", self)
        self.aboutButton.move(100, 100)