This widget is used to create multiple choice options in GUI Application.
Syntax-
w = Radiobutton ( main, option)
Parameter-
Main- parent Window.
Option- attribute of button widget.
Example-
- from tkinter import *
- def sel():
- selection = "selected" + str(var.get())
- label.config(text = selection)
- main = Tk()
- var = IntVar()
- R1 = Radiobutton(main, text="C# corner", variable=var, value=1,
- command=sel)
- R1.pack( anchor = W )
- R2 = Radiobutton(main, text="Python", variable=var, value=2,
- command=sel)
- R2.pack( anchor = W )
- R3 = Radiobutton(main, text=".Net", variable=var, value=3,
- command=sel)
- R3.pack( anchor = W)
- label = Label(main)
- label.pack()
- main.mainloop()
Output-
| Option | Description
|
| activebackground | It sets background color of widgets when widget is under the cursor. |
activeforeground
| It sets foreground color of widget when widget is under the cursor. |
anchor
| It is used to set the position of the text.
|
bg
| The normal background color behind the indicator and label.
|
bitmap
| It is used to display a monochrome image on a radiobutton.
|
borderwidth
| It sets the border width in pixels. Default is 2.
|
command
| It is used to call a method.
|
cursor
| Cursor is used to create a cursor in widgets like arrow, circle, dot etc.
|
font
| It is used to change the font of the text.
|
fg
| The color is used to render the text.
|
height
| It is used to set the height of radiobutton.
|
highlightbackground
| It is used to change the highlightbackground color.
|
highlightcolor
| It changes the color of widgets on focus.
|
image
| It is used to set the image
|
justify
| It is used to justify the text of widgets.
|
padx
| It is used to add additional padding on left and right of the text of widgets and default is 1.
|
pady
| It is used to add additional padding above and below the text of widgets. Default is 1.
|
relief
| Relief is special type of border. The values are SUNKEN, RAISED, GROOVE and RIDGE.
|
selectcolor
| It is used to change the color of radiobutton, when radiobutton is selected.
|
selectimage
| It is used to set the image on option to select.
|
state
| It is used to change the state of radiobutton
|
text
| It is used to add the text after the radiobutton.
|
textvariable
| It is used to store the value of widgets.
|
underline
| It is used to underline and default is -1, which means no underline text.
|
value
| It is used to define the value of radiobutton.
|
variable
| It is used to share the values of radiobutton.
|
width
| It is used to define the width of widgets.
|
wraplength
| v |
Summary
In this chapter, you learnt what Radiobutton widget is and how to use the property of the widget.