Book Image

wxPython 2.8 Application Development Cookbook

By : Cody Precord
Book Image

wxPython 2.8 Application Development Cookbook

By: Cody Precord

Overview of this book

<p>In today’s world of desktop applications there is a great amount of incentive to be able to develop applications that can run in more than one environment. Currently there are a handful of options available for cross platform frameworks to develop desktop applications in Python. wxPython is one such cross- platform GUI toolkit for the Python programming language. It allows Python programmers to create programs with a complete, highly functional graphical user interface, simply and easily. wxPython code style has changed quite a bit over the years, and gotten much more Pythonic. The examples you will find in this book are right up to date and reflect this change in style.<br />This cookbook provides you with the latest recipes to quickly create robust, reliable, and reusable wxPython applications. These recipes will guide you from writing simple, basic wxPython scripts all the way through complex concepts, and also feature various design approaches and techniques in wxPython.<br /><br />The book starts off by covering a variety of topics from the most basic requirements of a wxPython application to some of the more in depth details of the inner workings of the framework laying the foundation for any wxPython application. It then explains event handling, basic and advanced user interface controls, designing and layout, creating dialogs, components and extending functionality, and so on. We conclude by learning how to build and manage applications for distribution.<br />For each of the recipes, there is an introductory example, then more advanced examples, and plenty of example code to develop and manage user-friendly applications. For more experienced developers, most recipes also include additional discussion of the solution, allowing you to further customize and enhance the component.</p>
Table of Contents (19 chapters)
wxPython 2.8 Application Development Cookbook
Credits
About the Author
About the Reviewers
www.PacktPub.com
Preface
Index

Non-Blocking GUI


In this recipe, we explore what a responsive interface is and try to gain a good understanding of what the problem is that the other recipes in this chapter will provide solutions to. The recipe creates a simple application with two buttons. Each button will perform exactly the same task. However, the way in which the application responds and provides feedback to the user after the button is clicked will differ greatly between the two buttons, due to how the control flow is carried out.

How to do it...

To illustrate the issue at hand, we will create a simple Fibonacci number calculator application. First, we will begin by defining a Thread class and the function that will be used to calculate the Nth Fibonacci number:

import wx
import threading

class FibThread(threading.Thread):
    def __init__(self, window, n):
        super(FibThread, self).__init__()

        # Attributes
        self.window = window
        self.n = n

    def run(self):
        val = SlowFib(self.n...