BUTTON IN TKINTER
In this tutorial, we are going to learn about the button widget in tkinter, we will be looking at how to display button on the screen as well as discuss the features and their properties in detail.
Recommended Book: Python GUI Programming with Tkinter
What is a Button in Tkinter?
The button widget in Tkinter is used to add different types of buttons on the main window that you are working on. You can modify button settings to your own requirements. You can also add a function to the button and call whenever the button is pressed. You can create a button as follows:
button_tk = Button(window, features)
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Let’s look at the properties of button features:
|1||activebackground||Shows the button background color upon the mouse hover|
|2||activeforeground||Shows the button font color upon the mouse hover|
|3||Bd||It shows the width of the border in pixels|
|4||Bg||It shows the background color of the button|
|5||Command||It is used to set the function call whenever it is called.|
|6||Fg||Shows the foreground color of the button|
|7||Font||It decides the font of the button text|
|8||Height||It decides the height of the button.|
|10||Highlightcolor||It shows the highlight color of the button when it is clicked|
|11||Image||It is used to set image on the button|
|12||justify||It is used to display text on button in RIGHT, LEFT and CENTER justified positions.|
|13||Padx||This adds padding in horizontal direction|
|14||pady||This adds padding in vertical direction|
|15||Relief||This displays different types of borders like SUNKEN, RAISED, GROOVE, and RIDGE.|
|17||State||This represents DISABLED or ACTIVE state of the button|
|18||Underline||It is used to underline the text present on the button|
|19||Width||This feature sets the width of the button|
|20||Wraplength||This is used to wrap text lines within the given length.|
Creating a Simple Button
import tkinter as tk screen = tk.Tk() #Screen size screen.geometry('300x300') #Button button_tk = tk.Button(screen, text="Hello") button_tk.pack(side='top') screen.mainloop()
Creating a Button With a Function
We have created a simple function to alert the user that the button has been clicked. To learn more about functions in Python, check here.
import tkinter as tk screen = tk.Tk() #Screen size screen.geometry('300x300') #Define Function for Button def alert(): print("Button is clicked!") #Button button_tk = tk.Button(screen, text="Hello", command=alert) button_tk.pack(side='top') screen.mainloop()
Once the button is clicked, output on the python IDE will be:
Button is clicked!