Book Image

Tkinter GUI Application Development Cookbook

By : Alejandro Rodas de Paz
Book Image

Tkinter GUI Application Development Cookbook

By: Alejandro Rodas de Paz

Overview of this book

As one of the more versatile programming languages, Python is well-known for its batteries-included philosophy, which includes a rich set of modules in its standard library; Tkinter is the library included for building desktop applications. Due to this, Tkinter is a common choice for rapid GUI development, and more complex applications can benefit from the full capabilities of this library. This book covers all of your Tkinter and Python GUI development problems and solutions. Tkinter GUI Application Development Cookbook starts with an overview of Tkinter classes and at the same time provides recipes for basic topics, such as layout patterns and event handling. Next, we cover how to develop common GUI patterns, such as entering and saving data, navigating through menus and dialogs, and performing long-running actions in the background.You can then make your apps leverage network resources effectively and perform graphical operations on a canvas and related tasks such as detecting collisions between items. Finally, this book covers using themed widgets, an extension of Tk widgets that have a more native look and feel. Finally, this book covers using the canvas and themed widgets. By the end of the book, you will have an in-depth knowledge of Tkinter classes, and will know how to use them to build efficient and rich GUI applications.
Table of Contents (10 chapters)

Setting the main window's icon, title, and size

The Tk instance differs from normal widgets in the way that it is configured, so we will explore some basic methods that allow us to customize how it is displayed.

How to do it...

This snippet creates a main window with a custom title and icon. It has 400px of width by 200px of height, with a separation of 10px in each axis to the upper-left corner of the screen:

import tkinter as tk 
class App(tk.Tk): 
    def __init__(self): 
        self.title("My Tkinter app") 
if __name__ == "__main__": 
    app = App() 

This program assumes that you have a valid ICO file called python.ico in the same directory where the script is placed and executed.

How it works...

The methods title() and iconbitmap() of the Tk class are very self-descriptive—the first one sets the window title, whereas the second one takes the path to the icon that is associated to the window.

The geometry() method configures the size of the window with a string that follows the following pattern:


In case you add more secondary windows to your application, these methods are also available in the Toplevel class.

There's more...

If you want to make the application fullscreen, replace the call to the geometry() method with self.state("zoomed").