Python | focus_set () and focus_get () method

Michael Zippo

Tkinter has a number of widgets to provide functionality in any GUI. It also supports many generic widget methods that can be applied to any widget.
focus_get () and focus_set () are also generic widget methods. They can also be applied to the Tk () method.

focus_set () method

This method is used to set focus to the desired widget if and only if, when the main window is focused.

Syntax :

 widget.focus_set ()

Below is a Python program

# Import tkinter module
# and all functions

from tkinter import *

from tkinter.ttk import *

# create main window

master = Tk ()

# Login widget

e1 = Entry (master)

e1.pack (expand = 1 , fill = BOTH)

# The button widget that currently has focus

e2 = Button (master, text = "Button" )

# here the focus_set () method is used to set focus
e2.focus_set ()

e2.pack (pady = 5 )

# Radiobutton widget

e3 = Radiobutton (master, text = "Hello" )

e3 .pack (pady = 5 )

# Endless loop
mainloop ( )

Output:

You can see in the image above that the button widget has focus. For a better understanding, copy and run the above program .

focus_get () method

This method returns the name of the widget that currently has focus.

Syntax :

 master.focus_get ()

Note: you can use it with any widget, master not needed.

Below is a Python program —

# Import tkinter module
# and all functions

from tkinter import *

from tkinter.ttk import *

# create chapters window

master = Tk ()

# This method is used to get
# widget name
# which currently has focus
# clicking mouse-1

def focus (event):

widget = master.focus_get ()

print (widget, "has focus" )

# Login widget

e1 = Entry (master)

e1.pack (expand = 1 , fill = BOTH)

# Button widget

e2 = Button ( master, text = "Button" )

e2.pack (pady = 5 )

# Radiobutton widget

e3 = Radiobutton (master, text = "Hello" )

   e3.pack (pady   =   5  ) 
   
  # Here the focus () function is associated with the Button-1 mouse  
  # so every time you click it will call  
  # focus method defined above  
   master.bind_all (  ""Button-1""  ,   lambda   e: focus (e)) 
   
  # endless loop  
  mainloop ()

Output: Every time you click on any widget OR if you click the mouse-1 above, the program will remind chat the name of the widget that has focus. For a better understanding, copy and run the above program.

.! Radiobutton has focus.! Entry has focus.! Button has focus

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Python | focus_set () and focus_get () method

focus_set () method

focus_get () method

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