Tkinter:
========
GUI ==> Graphical User Interface

How to use the Tkinter:
=======================
1) Import the tkinter module
=============================
Python-2.x ==> Tkinter
Python-3.x ==> tkinter

Syntax:
	import tkinter

	or

	from tkinter import *

2) we need to create the main object/window (container)

3) we can add widgets to the main object/window.

4) Apply event trigger to the widget

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First Tkinter GUI Application:
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Tk():
=====
	==> used to create the main window
	Syntax:
		object-name/window-name = Tk(screenname = None, baseName = None, className = "Tk", useTk = 1)

mainloop():
===========
	window ==> widget ==> to run the GUI app
	mainloop() ==> Infinite loop

import tkinter

obj = tkinter.Tk() # can add new window

obj.mainloop()

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Adding of Widgets:
==================
1) Label():
===========
	==> can used to display the box where we can put text/image.
		text/image which can be updated any time as per the code.
	Syntax:
		object = Label(master, option = value)

from tkinter import *

# main window object
obj = Tk()

# adding the widget

widget = Label(obj, text = "Welcome To Ashok IT")

widget.pack()

obj.mainloop()

============================================
Button():
=========
Syntax:
	object = Button(master, option = value)

import tkinter as tk

obj = tk.Tk()

obj.title("Counting Seconds")

btn = tk.Button(obj, text = "File", width = 10, command = obj.destroy)

btn.pack()

obj.mainloop()
==================================
Entry():
========
==> used to enter the single line text from the user.
Syntax:
	object = Entry(master, option = value)

from tkinter import *

master = Tk()

Label(master, text = "First Name").grid(row = 0)

Label(master, text = "Last Name").grid(row = 1)

e1 = Entry(master)
e2 = Entry(master)

e1.grid(row = 0, column = 1)
e2.grid(row = 1, column = 1)

mainloop()
===========================================
Radiobutton():
=============
Gender: Male Female Other
Syntax:
	object = Radiobutton(master, option = value)

from tkinter import *

obj = Tk()

v = IntVar()

Radiobutton(obj,text="Male",variable=v,value=1).pack()

Radiobutton(obj, text = "Female", variable = v, value = 2).pack()

Radiobutton(obj,text = "Others", variable = v, value = 3).pack()

mainloop()
==============================
Checkbutton():
==============
Syntax:
	object = Checkbutton(master, option = value)

from tkinter import *

master = Tk()

v1 = IntVar()

Checkbutton(master, text = "Reading", variable = v1).grid(row = 0, sticky = W)

v2 = IntVar()

Checkbutton(master, text = "Surfing", variable = v2).grid(row = 1, sticky = W)

mainloop()
===============================
Listbox():
=========
Syntax:
	object = Listbox(master, option = value)

from tkinter import *

top = Tk()

Lb = Listbox(top)

Lb.insert(1,"Python")
Lb.insert(2,"Java")
Lb.insert(3,"C++")
Lb.insert(4,"C#")
Lb.insert(5, "Any Other")

Lb.pack()

top.mainloop()