Customizing Tkinter entry Widgets with themes

Last update on April 25 2025 12:57:24 (UTC/GMT +8 hours)

Write a Python program that implements a themed "Entry" widget with a different background and border color using Tkinter.

Sample Solution:

Python Code:

import tkinter as tk

class ThemedEntry:
    def __init__(self, master=None, **kwargs):
        self.entry = tk.Entry(master, **kwargs)
        self.entry.configure(
            highlightthickness=2,  # Set the border thickness
            highlightcolor="red",  # Set the border color
            bg="lightblue"         # Set the background color
        )

if __name__ == "__main__":
    root = tk.Tk()
    root.title("Themed Entry Example")

    themed_entry = ThemedEntry(root)
    themed_entry.entry.pack(padx=20, pady=20)

    root.mainloop()

Explanation:

In the exercise above -

Import the "tkinter" library.
Define a class called "ThemedEntry". This class represents a custom themed 'Entry' widget.
In the init method of the "ThemedEntry" class, we initialize an Entry widget by calling tk.Entry(master, kwargs).
We configure the appearance of the Entry widget using the .configure() method:

highlightthickness=2: Sets the border thickness around the Entry widget to 2 pixels.
highlightcolor="red": Sets the border color to red. You can replace "red" with any other valid color.
bg="lightblue": Sets the background color of the Entry widget to light blue.

In the if name == "__main__": block, we create the main application window (root) using tk.Tk() and set its title to "Themed Entry Example."
Create an instance of the "ThemedEntry" class called "themed_entry".
Finally, pack the 'entry' widget (contained within the "ThemedEntry" instance) inside the main window with padding ('padx' and 'pady') to ensure some spacing around the widget.
Finally, start the Tkinter main loop with "root.mainloop()".

Output:

Flowchart:

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