NOTEPAD
SUBMITTED BY : GROUP 23
MENTORED BY : POONAM DHANKAR
INTRODUCTION
To learn how to build your text editor like Notepad using python. This is a
detailed tutorial with code and explanation using which you will be able to
create your text editor.
Tkinter is a GUI library from python from which we can create multiple GUI
apps. Here, using tkinter we will develop a notepad like text editor. This
notepad will have the menu where we can create new file, open existing file,
save the file, editing, cut and paste, all functionality will there.
Prerequisite
1. Python installed.
2. Tkinter installed.
ABOUT
Notepad is a simple text editor for Microsoft Windows that
allows users to create text documents, save them as plain
text, and edit plaintext files. It is extremely useful for
viewing or writing relatively short text documents saved as
plain text.
1. The File menu has options like New, Open, Save, Save
As, and Exit.
2. The Edit menu has options like Cut, Copy, Paste, Delete,
Find, Select All, and Time/Date.
MENU ITEMS
Our notepad will have four main menu items: File, Edit,
Commands & Help. Our file menu item will have four
sub-items- New, Open, Save & Exit.
Our edit menu item will have three sub-items- cut, copy
& paste.
And our help menu will have one subitem- About
notepad
FUNCTIONALITY OF MENU ITEMS
Now we have the menu items ready, now we are going to add functionality to each of the menu items. Below
the list of functionality, we going to add to this notepad (of course you can add many others too).
• Open file
• New file
• Save file
• Quit Application
• Show About
• Cut
• Copy
• Paste
FACILITIES REQUIRED
SOFTWARE
• Python
• Pycharm
LIBRARIES
• Tkinter
Firstly we need to import tkinter after
installing it for python
import tkinter
import os
from tkinter import *
# To get the space above for message
from tkinter.messagebox import *
# To get the dialog box to open when required
from tkinter.filedialog import
The above code will enable tkinter
for further use
Next up, we need a menu bar for the notepad
we are developing, the code for that will be as
follows
# Add controls(widget)
self.__thisTextArea.grid(sticky = N + E + S + W)
# To open new file
self.__thisFileMenu.add_command(label = "New",
command = self.__newFile)
# To open a already existing file
self.__thisFileMenu.add_command(label = "Open",
command = self.__openFile)
# To give a feature of cut
self.__thisEditMenu.add_command(label = "Cut",
command = self.__cut)
# To give a feature of copy
self.__thisEditMenu.add_command(label = "Copy",
command = self.__copy)
# To save current file
# To give a feature of paste
self.__thisFileMenu.add_command(label = "Save",
self.__thisEditMenu.add_command(label = "Paste",
command = self.__saveFile)
command = self.__paste)
# To create a line in the dialog
self.__thisFileMenu.add_separator()
# To give a feature of editing
self.__thisMenuBar.add_cascade(label = "Edit",
# To terminate
menu
self.__thisFileMenu.add_command(label = "Exit",
= self.__thisEditMenu)
command = self.__quitApplication)
self.__thisMenuBar.add_cascade(label = "File",
menu = self.__thisFileMenu)
# To create a feature of description of the notepad
self.__thisHelpMenu.add_command(label = "About Notepad",
command = self.__showAbout)
self.__thisMenuBar.add_cascade(label = "Help",
menu =
self.__thisHelpMenu)
self.__root.config(menu = self.__thisMenuBar)
self.__thisScrollBar.pack(side = RIGHT, fill = Y)
# Scrollbar will adjust automatically
# according to the content
self.__thisScrollBar.config(command = self.__thisTextArea.yview)
self.__thisTextArea.config(yscrollcommand = self.__thisScrollBar.set)
Further ahead, we need to add the MENU
and the FUNCTIONALITY of our notepad,
and then merge all these three segments of
code into one for compilation using tkinter
(the codes for those are very long and will be
put in the report for this project)
after that we will save the filename with the
extension .py and run our code to check,
outputs in next slide
THANK YOU