Book Image

Python GUI Programming Cookbook, Second Edition - Second Edition

By : Burkhard Meier
Book Image

Python GUI Programming Cookbook, Second Edition - Second Edition

By: Burkhard Meier

Overview of this book

Python is a multi-domain, interpreted programming language. It is a widely used general-purpose, high-level programming language. It is often used as a scripting language because of its forgiving syntax and compatibility with a wide variety of different eco-systems. Python GUI Programming Cookbook follows a task-based approach to help you create beautiful and very effective GUIs with the least amount of code necessary. This book will guide you through the very basics of creating a fully functional GUI in Python with only a few lines of code. Each and every recipe adds more widgets to the GUIs we are creating. While the cookbook recipes all stand on their own, there is a common theme running through all of them. As our GUIs keep expanding, using more and more widgets, we start to talk to networks, databases, and graphical libraries that greatly enhance our GUI’s functionality. This book is what you need to expand your knowledge on the subject of GUIs, and make sure you’re not missing out in the long run.
Table of Contents (18 chapters)
Title Page
About the Author
About the Reviewer
Customer Feedback

How to use the canvas widget

This recipe shows how to add dramatic color effects to our GUI by using the tkinter canvas widget.

Getting ready

We will improve our previous code from, and we'll improve the look of our GUI by adding some more colors to it.

How to do it…

First, we will create a third tab in our GUI in order to isolate our new code.

Here is the code to create the new third tab:

    tabControl = ttk.Notebook(win)          # Create Tab Control 

    tab1 = ttk.Frame(tabControl)            # Create a tab  
    tabControl.add(tab1, text='Tab 1')      # Add the tab 

    tab2 = ttk.Frame(tabControl)              
    tabControl.add(tab2, text='Tab 2')      # Add a second tab

    tab3 = ttk.Frame(tabControl)            
    tabControl.add(tab3, text='Tab 3')      # Add a third tab 

    tabControl.pack(expand=1, fill="both")  # Pack to make tabs visible

Next, we use another built-in widget of tkinter:  Canvas. A lot of people like this widget because it has powerful capabilities...