import tkinter as tk
from tkinter import *

# Top level window
frame = tk.Tk()
frame.title("My GUI")
frame.geometry("640x480")


# Function for getting Input from textbox and printing it at label widget
def printInput():
    input = inputtxt.get(1.0, "end-1c")
    top = Toplevel()
    top.geometry("300x100")
    top.title("Top Level Widget")
    l2 = Label(top, text="You entered: " + input)
    l2.pack()
    top.mainloop()


# TextBox Creation
inputtxt = tk.Text(frame, height=5, width=20)
inputtxt.pack()

# Button Creation
printButton = tk.Button(frame, text="Print", command=printInput)
printButton.pack()

# Check Button
Checkbutton1 = IntVar()
Checkbutton2 = IntVar()
Checkbutton3 = IntVar()

Button1 = Checkbutton(
    frame,
    text="Teacher",
    variable=Checkbutton1,
    onvalue=1,
    offvalue=0,
    height=2,
    width=10,
)

Button2 = Checkbutton(
    frame,
    text="Student",
    variable=Checkbutton2,
    onvalue=1,
    offvalue=0,
    height=2,
    width=10,
)

Button3 = Checkbutton(
    frame,
    text="Subject",
    variable=Checkbutton3,
    onvalue=1,
    offvalue=0,
    height=2,
    width=10,
)

Button1.pack()
Button2.pack()
Button3.pack()

# Creating Menubar
menubar = Menu(frame)

# Adding File Menu and commands
file = Menu(menubar, tearoff=0)
menubar.add_cascade(label="File", menu=file)
file.add_command(label="New File", command=None)
file.add_command(label="Open...", command=None)
file.add_command(label="Save", command=None)
file.add_separator()
file.add_command(label="Exit", command=frame.destroy)

# Adding Edit Menu and commands
edit = Menu(menubar, tearoff=0)
menubar.add_cascade(label="Edit", menu=edit)
edit.add_command(label="Cut", command=None)
edit.add_command(label="Copy", command=None)
edit.add_command(label="Paste", command=None)
edit.add_command(label="Select All", command=None)
edit.add_separator()
edit.add_command(label="Find...", command=None)
edit.add_command(label="Find again", command=None)

# Adding Help Menu
help_ = Menu(menubar, tearoff=0)
menubar.add_cascade(label="Help", menu=help_)
help_.add_command(label="Demo", command=None)
help_.add_separator()
help_.add_command(label="About My GUI", command=None)

# display Menu
text = """ Lorem Ipsum is simply dummy text of the printing and typesetting industry. Lorem Ipsum has been the industry's standard dummy text ever since the 1500s, when an unknown printer took a galley of type and scrambled it to make a type specimen book. It has survived not only five centuries, but also the leap into electronic typesetting, remaining essentially unchanged. It was popularised in the 1960s with the release of Letraset sheets containing Lorem Ipsum passages, and more recently with desktop publishing software like Aldus PageMaker including versions of Lorem Ipsum. Contrary to popular belief, Lorem Ipsum is not simply random text. It has roots in a piece of classical Latin literature from 45 BC, making it over 2000 years old. Richard McClintock, a Latin professor at Hampden-Sydney College in Virginia, looked up one of the more obscure Latin words, consectetur, from a Lorem Ipsum passage, and going through  the cites of the word in classical literature, discovered the undoubtable source. Lorem Ipsum comes from sections 1.10.32 and 1.10.33 of "de Finibus Bonorum et Malorum" (The Extremes of Good and Evil) by Cicero, written in 45 BC. This book is a treatise on the theory of ethics, very popular during the Renaissance. The first line of Lorem Ipsum, "Lorem ipsum dolor sit amet..", comes from a line in section 1.10.32. """
frame.config(menu=menubar)
scroll_bar = Scrollbar(frame)
scroll_bar.pack(side="right", fill="y")
textBox = Text(frame, height=5, width=80, yscrollcommand=scroll_bar.set)
textBox.pack(side="left", fill="both")
textBox.insert(tk.END, text)
scroll_bar.config(command=textBox.yview)

# Label Creation
lbl = tk.Label(frame, text="")

lbl.pack()
frame.mainloop()