Book Image

Tkinter GUI Programming by Example

Book Image

Tkinter GUI Programming by Example

Overview of this book

Tkinter is a modular, cross-platform application development toolkit for Python. When developing GUI-rich applications, the most important choices are which programming language(s) and which GUI framework to use. Python and Tkinter prove to be a great combination. This book will get you familiar with Tkinter by having you create fun and interactive projects. These projects have varying degrees of complexity. We'll start with a simple project, where you'll learn the fundamentals of GUI programming and the basics of working with a Tkinter application. After getting the basics right, we'll move on to creating a project of slightly increased complexity, such as a highly customizable Python editor. In the next project, we'll crank up the complexity level to create an instant messaging app. Toward the end, we'll discuss various ways of packaging our applications so that they can be shared and installed on other machines without the user having to learn how to install and run Python programs.
Table of Contents (18 chapters)
Title Page
Copyright and Credits
Packt Upsell
Contributors
Preface
Index

Chapter 6. Color Me Impressed! – Adding Syntax Highlighting

Now that we have a basic application laid out, it's time to dig deep into theTextwidget and learn all about how to control its content while navigating around it. We will apply these concepts by adding syntax highlighting to our existingTextAreaclass. Along the way, we will also touch upon the concepts of tagging areas and parsingconfigfiles.

In this chapter, we will cover:

  • Tkinter's indexing system for Text widgets
  • Using the tag system to alter the display of text
  • Locating specific content with the search function of a Text widget
  • Parsing config files

Let's begin by looking at how we can use the indexing system to pinpoint locations within a Text widget.