Creating a Frameless window in Python Tkinter

Tkinter is the most commonly used Python library for creating GUI-based applications. It has features like adding widgets and other necessary attributes.

Let us suppose that we want to create a borderless window using tkinter. To create a borderless window, we can use the overrideredirect() method which basically disables the window manager and removes window elements such as the closing button, title bar, minimization button, and other standard window controls.

Understanding overrideredirect()

overrideredirect() is a Boolean function which accepts either True or False. When set to True, it creates a frameless window without standard window decorations. Once the window is opened, it can be closed by pressing Alt+F4 or by implementing a custom close function.

Creating a Frameless Window

Here's how to create a basic frameless window ?

# Importing the tkinter library
from tkinter import *

# Create an instance of tkinter frame
win = Tk()

# Define the size of the window or frame
win.geometry("700x400")

# Define the window text widget
lab = Label(win, text="Hello World", font=('Times New Roman', 35), fg="green", anchor="c")
lab.pack()

# Make the window borderless
win.overrideredirect(True)

win.mainloop()

The output of the above code will display a borderless window without any title bar or standard window controls ?

Adding Custom Close Functionality

Since frameless windows don't have a close button, you can add custom close functionality ?

from tkinter import *

win = Tk()
win.geometry("700x400")

# Make the window borderless
win.overrideredirect(True)

# Add a close button
close_btn = Button(win, text="Close", command=win.destroy, bg="red", fg="white")
close_btn.pack(side=TOP, anchor=NE, padx=10, pady=10)

# Main content
lab = Label(win, text="Frameless Window with Close Button", font=('Arial', 20), fg="blue")
lab.pack(expand=True)

win.mainloop()

Key Points

• overrideredirect(True) removes all window decorations
• The window becomes unmovable by default
• No minimize, maximize, or close buttons are available
• Custom functionality must be implemented for window operations

Conclusion

The overrideredirect(True) method creates frameless windows by removing standard window decorations. This is useful for creating splash screens, custom dialogs, or unique interface designs where standard window controls are not desired.