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simple gui in tkinter python.md

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Tkinter Programming

Tkinter is the standard GUI library for Python. Python when combined with Tkinter provides a fast and easy way to create GUI applications. Tkinter provides a powerful object-oriented interface to the Tk GUI toolkit.

Creating a GUI application using Tkinter is an easy task. All you need to do is perform the following steps −

  • Import the Tkinter module.

  • Create the GUI application main window.

  • Add one or more of the above-mentioned widgets to the GUI application.

  • Enter the main event loop to take action against each event triggered by the user.

Example

#!/usr/bin/python

import tkinter
top = tkinter.Tk()
# Code to add widgets will go here...
top.mainloop()

Tkinter Widgets

Tkinter provides various controls, such as buttons, labels and text boxes used in a GUI application. These controls are commonly called widgets.

There are currently 15 types of widgets in Tkinter. We present these widgets as well as a brief description in the following table −

  1. Button

The Button widget is used to display buttons in your application.

  1. Canvas

The Canvas widget is used to draw shapes, such as lines, ovals, polygons and rectangles, in your application.

  1. Checkbutton

The Checkbutton widget is used to display a number of options as checkboxes. The user can select multiple options at a time.

  1. Entry

The Entry widget is used to display a single-line text field for accepting values from a user.

  1. Frame

The Frame widget is used as a container widget to organize other widgets.

  1. Label

The Label widget is used to provide a single-line caption for other widgets. It can also contain images.

  1. Listbox

The Listbox widget is used to provide a list of options to a user.

  1. Menubutton

The Menubutton widget is used to display menus in your application.

  1. Menu

The Menu widget is used to provide various commands to a user. These commands are contained inside Menubutton.

  1. Message

The Message widget is used to display multiline text fields for accepting values from a user.

  1. Radiobutton

The Radiobutton widget is used to display a number of options as radio buttons. The user can select only one option at a time.

  1. Scale

The Scale widget is used to provide a slider widget.

  1. Scrollbar

The Scrollbar widget is used to add scrolling capability to various widgets, such as list boxes.

  1. Text

The Text widget is used to display text in multiple lines.

  1. Toplevel

The Toplevel widget is used to provide a separate window container.

  1. Spinbox

The Spinbox widget is a variant of the standard Tkinter Entry widget, which can be used to select from a fixed number of values.

  1. PanedWindow

A PanedWindow is a container widget that may contain any number of panes, arranged horizontally or vertically.

  1. LabelFrame

A labelframe is a simple container widget. Its primary purpose is to act as a spacer or container for complex window layouts.

  1. tkMessageBox

This module is used to display message boxes in your applications.