Tkinter Library Functions in Python

This package (“Tk interface”) is the standard Python interface. There are available on most Unix platforms, including macOS, as well as on Windows systems. Tkinter is not a thin wrapper. Python with tkinter is the fast and easy way to create the GUI (Graphical User Interface) applications. Tkinter for creating graphical user interface for desktop base applications.

Tkinter top-level window can be create by using the following steps :-

• import the Tkinter module.
• Create the main application window.
• Add the widgets such like labels, buttons, frames, etc. to the window.
• Call the main event loop so that the actions can take place on the user’s computer screen.

Example

from tkinter import *

top = Tk()

top.mainloop()

Output

Tkinter Widgets

There are various widgets

• Button
• Canvas
• Checkbutton
• Entry
• Frame
• Label
• ListBox
• Menubutton
• Menu
• Message
• Radiobutton
• Scale
• Scrollbar
• Text
• TopLevel
• LabelFrame
• Messagebox

Button Widgets

The Button is use to add various kinds of buttons to the python application is knows as Button Widgets.

Syntax

Button (master, option = value)

import tkinter as tk
r = tk.Tk()
button = tk.Button(r, text=’Plz click me’, width=25, command=r.destroy)
button.pack()
r.mainloop()

Output

CheckButton

The Checkbutton is use to display the CheckButton on the window is knows as CheckButton.

Syntax

CheckButton (master, option = value)

Example

from tkinter import *
root = Tk()
v1 = IntVar()
Checkbutton(root, text=’HTML’,width =35, variable=v1).grid(row=0, sticky=S)
v2 = IntVar()
Checkbutton(root, text=’CSS’,width =35, variable=v2).grid(row=1, sticky=S)
v3 = IntVar()
Checkbutton(root, text=’JAVA’,width =35, variable=v3).grid(row=2, sticky=S)
mainloop()

Output

RadioButton

The user is provided with various options and the user can select only one option among them is know as RadioButton

Syntax

RadioButton (master, option = values)

Example

from tkinter import *
root = Tk()
v = IntVar()
Radiobutton(root, text=’math’,width =35, variable=v, value=1).pack(anchor=W)
Radiobutton(root, text=’bio’,width =35, variable=v, value=2).pack(anchor=W)
Radiobutton(root, text=’others’,width =35, variable=v, value=3).pack(anchor=W)
mainloop()

Output

Python Tkinter Geometry

Tkinter geometry specifies the method by using which, the widgets are represented on display is knows as Python Tkinter Geometry.

There are basic three Tkinter geometry

• The pack() method
• The grid() method
• The place() method

The Pack() method

Python Tkinter pack() method widget is use to organize widget in the block.

The syntax to use the pack() Method is given below

Syntax

widget.pack(options) 

Example of the pack () method

from tkinter import *
parent = Tk()
redbutton = Button(parent, text = “red”, fg = “red”)
redbutton.pack( side = LEFT)
greenbutton = Button(parent, text = “Black”, fg = “black”)
greenbutton.pack( side = RIGHT )
bluebutton = Button(parent, text = “Blue”, fg = “blue”)
bluebutton.pack( side = TOP )
blackbutton = Button(parent, text = “Green”, fg = “red”)
blackbutton.pack( side = BOTTOM)
parent.mainloop()

Output of the pack () method

The grid() method

Python Tkinter grid() method manager organizes the widgets in the tabular form is knows as the grid () method.

The syntax to use the grid() Method is given below

Syntax

widget.grid(options) 

Example of Python Tkinter grid() method

from tkinter import *
parent = Tk()
username = Label(parent,text = “UserName”).grid(row = 0, column = 0)
e1 = Entry(parent).grid(row = 0, column = 1)
password = Label(parent,text = “Password”).grid(row = 1, column = 0)
e2 = Entry(parent).grid(row = 1, column = 1)
submit = Button(parent, text = “Submit”).grid(row = 4, column = 0)
parent.mainloop()

Output Python Tkinter grid() method

The place() method

Python Tkinter place() method manager organizes the widgets to the specific x and y coordinates is knows as Python Tkinter place() method.

The syntax to use the place() Method is given below

Syntax

widget.place(options)  

Example of Python Tkinter place() method

from tkinter import *
top = Tk()
top.geometry(“400×250”)
ursername = Label(top, text = “UserName”).place(x = 30,y = 50)
email = Label(top, text = “Email”).place(x = 30, y = 90)
password = Label(top, text = “Password”).place(x = 30, y = 130)
e1 = Entry(top).place(x = 95, y = 55)
e2 = Entry(top).place(x = 75, y = 95)
e3 = Entry(top).place(x = 95, y = 135)
top.mainloop()

Output Python Tkinter place() method

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