Python Tkinter Widget

Python Tkinter Widget

Widget Classes 

Tkinter supports the below mentioned core widgets –

Widgets	Description
Label	It is used to display text or image on the screen
Button	It is used to add buttons to your application
Canvas	It is used to draw pictures and others layouts like texts, graphics etc.
ComboBox	It contains a down arrow to select from list of available options
CheckButton	It displays a number of options to the user as toggle buttons from which user can select any number of options.
RadiButton	It is used to implement one-of-many selection as it allows only one option to be selected
Entry	It is used to input single line text entry from user
Frame	It is used as container to hold and organize the widgets
Message	It works same as that of label and refers to multi-line and non-editable text
Scale	It is used to provide a graphical slider which allows to select any value from that scale
Scrollbar	It is used to scroll down the contents. It provides a slide controller.
SpinBox	It is allows user to select from given set of values
Text	It allows user to edit multiline text and format the way it has to be displayed
Menu	It is used to create all kinds of menu used by an application

Geometry Management

Creating a new widget doesn’t mean that it will appear on the screen. To display it, we need to call a special method: either grid, pack(example above), or place. 

Method	Description
pack()	The Pack geometry manager packs widgets in rows or columns.
grid()	The Grid geometry manager puts the widgets in a 2-dimensional table.  The master widget is split into a number of rows and columns, and each “cell” in the resulting table can hold a widget.
place()	The Place geometry manager is the simplest of the three general geometry managers provided in Tkinter.  It allows you explicitly set the position and size of a window, either in absolute terms, or relative to another window.