Tkinter has a number of widgets to provide functionality in any GUI. It also supports a variety of universal widget methods which can be applied on any of the widget.
focus_get() and
focus_set() methods are also universal widget methods. They can also be applied on
Tk() method.
focus_set() method-
This method is used to set the focus on the desired widget if and only if the master window is focused.
Syntax:widget.focus_set()
Below is the Python program-
Python3# Importing tkinter module# and all functionsfromtkinterimport*fromtkinter.ttkimport*# creating master windowmaster=Tk()# Entry widgete1=Entry(master)e1.pack(expand=1,fill=BOTH)# Button widget which currently has the focuse2=Button(master,text="Button")# here focus_set() method is used to set the focuse2.focus_set()e2.pack(pady=5)# Radiobuton widgete3=Radiobutton(master,text="Hello")e3.pack(pady=5)# Infinite loopmainloop()
You may observe in above image that
Button widget has the focus.
For better understanding copy and run above program.
focus_get() method-
This method returns the name of the widget which currently has the focus.
Syntax:master.focus_get()
Note: You can use it with any of the widget, master in not necessary.Below is the Python program -
Python3# Importing tkinter module# and all functionsfromtkinterimport*fromtkinter.ttkimport*# creating master windowmaster=Tk()# This method is used to get# the name of the widget# which currently has the focus# by clicking Mouse Button-1deffocus(event):widget=master.focus_get()print(widget,"has focus")# Entry widgete1=Entry(master)e1.pack(expand=1,fill=BOTH)# Button Widgete2=Button(master,text="Button")e2.pack(pady=5)# Radiobutton widgete3=Radiobutton(master,text="Hello")e3.pack(pady=5)# Here function focus() is binded with Mouse Button-1# so every time you click mouse, it will call the# focus method, defined abovemaster.bind_all("<Button-1>",lambdae:focus(e))# infinite loopmainloop() Every time you click on any widget OR if you click the mouse button-1 above program will print the name of the widget which has the focus. For better understanding copy and run above program.
.!radiobutton has focus.!entry has focus.!button has focus