The significance of Button widget is that it is used for handling events to perform certain operations in the application. In order to handle such events, we generally define a method which contains certain operations.
Let us suppose we want to change the event method after initializing the button. We can configure the Button and its handler using configure(options) method. Thus, by defining a new method and configuring the button we can trigger a new event with the same button.
#Import tkinter library from tkinter import * #Create an instance of tkinter frame win = Tk() #Set the geometry win.geometry("750x250") #Define a function to show the text label def text_label(): Label(win, text= "Woohoo! An Event has occurred!", font= ('Helvetica 10 bold')).pack(pady=20) #Configure the Button to trigger a new event button.configure(command= close_win) #Define a function to close the event def close_win(): win.destroy() #Create a Button widget button= Button(win, text= "Click", font= ('Helvetica 10 bold'), command= text_label) button.pack(side= TOP) win.mainloop()
Running the above code will display a window that contains a button.
When the Button is pressed for the first time, it will display a text label.
Now click the button for a second time and it will terminate the TCL interpreter.