Creating an Automatically Maximized Tkinter Window

Creating an Automatically Maximized Tkinter Window

Tkinter is a popular GUI (graphical user interface) library for Python that allows developers to create user-friendly desktop applications. One of the common requirements for a Tkinter window is to be maximized automatically upon launch. In this article, we will explore the steps to create an automatically maximized Tkinter window using Python.

Understanding the Tkinter Geometry Manager

Before we dive into creating an automatically maximized Tkinter window, let’s take a brief look at the Tkinter geometry manager. A geometry manager is responsible for positioning and sizing the widgets in a Tkinter window. There are three geometry managers available in Tkinter:

  1. Pack Manager: This geometry manager organizes widgets in a block-like structure and uses minimal space.

  2. Grid Manager: This geometry manager organizes widgets in a grid-like structure and is more flexible than the pack manager.

  3. Place Manager: This geometry manager allows widgets to be manually placed at specific locations on a window.

For this article, we will use the grid manager to organize our widgets.

Creating a Tkinter window and configuring its properties

To create a Tkinter window, we first need to import the Tk class from the tkinter module. We can then create an instance of the Tk class, which will represent our main window.

import tkinter as tk

root = tk.Tk()

Now that we have our root window, we can configure its properties using the configure() method. One important property we need to set is the window’s size. We can do this by invoking the geometry() method.


In this example, we set the window’s size to 600 pixels wide and 400 pixels high.

Maximizing the Tkinter window

To maximize our Tkinter window, we can use the wm_state() method of the root window and pass in the zoomed parameter.


This method call will maximize the window to fit the screen size.

Adding a Frame to the Tkinter window

Now that we have our main window, let’s add a frame to it. A frame is like a container that we can use to group and organize our widgets. In this example, we will add a frame to our window and use the grid() method to position it.

frame = tk.Frame(root)
frame.grid(row=0, column=0, padx=10, pady=10)

In this example, we create a frame and position it in row 0 and column 0 of the grid layout of our root window. We also add a padding of 10 pixels on the x-axis and y-axis.

Adding a Label to the Frame

Let’s add a label to our frame using the Label class. A label is a widget that displays a text string. We can customize its font, color, background color, and other properties.

label = tk.Label(frame, text="Welcome to our Application!", font=("Helvetica", 24))
label.grid(row=0, column=0, padx=10, pady=10)

In this example, we create a label with a text string and set its font to Helvetica with a size of 24. We then add the label to our frame and position it in row 0 and column 0 of the grid layout of the frame. We also add a padding of 10 pixels on the x-axis and y-axis.

Adding a Button to the Frame

Next, let’s add a button to our frame. We can do this by using the Button class. A button is a widget that triggers an action when clicked. We can give it a text label, specify its font and color, and attach a function to the command property to be executed when clicked.

def button_click():
    print("Button was clicked!")

button = tk.Button(frame, text="Click me!", font=("Helvetica", 18), command=button_click)
button.grid(row=1, column=0, padx=10, pady=10)

In this example, we create a button with a text label, set its font to Helvetica with a size of 18, and attach a click handler function to the command property. When the button is clicked, the button_click() function will be executed, which will output a message to the console.

Running the Application

Finally, we need to start the Tkinter event loop to run our application. We can do this by invoking the mainloop() method of our root window.


This method call will keep our application running and listen for events such as button clicks.


In this article, we learned how to create an automatically maximized Tkinter window using Python. We used the grid manager to position and organize our widgets, and we configured the root window properties using the configure() and geometry() methods. We also added a frame, label, and button to our window and attached a click handler function to the button. Finally, we ran our application by invoking the mainloop() method.

With this knowledge, you should now be able to create your own Tkinter applications with an automatically maximized window. Happy coding!



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