Book Image

Python GUI Programming with Tkinter.

By : Alan D. Moore
Book Image

Python GUI Programming with Tkinter.

By: Alan D. Moore

Overview of this book

Tkinter is a lightweight, portable, and easy-to-use graphical toolkit available in the Python Standard Library, widely used to build Python GUIs due to its simplicity and availability. This book teaches you to design and build graphical user interfaces that are functional, appealing, and user-friendly using the powerful combination of Python and Tkinter. After being introduced to Tkinter, you will be guided step-by-step through the application development process. Over the course of the book, your application will evolve from a simple data-entry form to a complex data management and visualization tool while maintaining a clean and robust design. In addition to building the GUI, you'll learn how to connect to external databases and network resources, test your code to avoid errors, and maximize performance using asynchronous programming. You'll make the most of Tkinter's cross-platform availability by learning how to maintain compatibility, mimic platform-native look and feel, and build executables for deployment across popular computing platforms. By the end of this book, you will have the skills and confidence to design and build powerful high-end GUI applications to solve real-world problems.
Table of Contents (23 chapters)
Title Page
Copyright and Credits
Dedication
Packt Upsell
Contributors
Preface
Index

Working with images in Tkinter


The first requirement we're going to handle is adding the company logo. As a result of corporate policy, your application is supposed to have the company logo embedded in it, and you've been asked to make your application comply if possible.

To add this image to our application, you'll need to learn about Tkinter's PhotoImage class.

Tkinter PhotoImage

Several Tkinter widgets, including Label and Button, can take an image argument, which allows them to display an image. We can't simply put a path to an image file in those cases; instead, we have to create a PhotoImage object.

Making a PhotoImage object is fairly simple:

myimage = tk.PhotoImage(file='my_image.png')

PhotoImage is typically called with the keyword argument file, which is pointed to a file path. Alternatively, you can use the data argument to point to a bytes object containing image data.

A PhotoImage can be used wherever an image argument is accepted, such as a Label:

mylabel = tk.Label(root, image=myimage...