How to Make Your Own Cross Platform Custom Notepad Application [Windows/Mac/Linux]

If you want to make your own custom Notepad application (say as a school or college project) then the best way to get it done quickly is by using Python Programming.

In this article, we will try and create a very basic Notepad application that has the functionality as Menu options,

• Open and Edit a text file.
• Save a text file.
• Exit the Notepad

We will need to make use of the tkinter GUI module for this.

Code for Custom Notepad

import tkinter as tk
from tkinter import filedialog

def open_file():
    file_path = filedialog.askopenfilename()
    if file_path:
        with open(file_path, 'r') as file:
            text.delete(1.0, tk.END)
            text.insert(tk.END, file.read())

def save_file():
    file_path = filedialog.asksaveasfilename(defaultextension=".txt")
    if file_path:
        with open(file_path, 'w') as file:
            file.write(text.get(1.0, tk.END))

root = tk.Tk()
root.title("Custom Notepad Application")

notes = tk.Text(root, wrap=tk.WORD)
notes.pack()

menu = tk.Menu(root)
root.config(menu=menu)

file_menu = tk.Menu(menu)
menu.add_cascade(label="File", menu=file_menu)
file_menu.add_command(label="Open File...", command=open_file)
file_menu.add_command(label="Save File...", command=save_file)
file_menu.add_separator()
file_menu.add_command(label="Exit", command=root.destroy)

root.mainloop()

Demo: