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turtle.onscreenclick() function in Python

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The turtle module provides turtle graphics primitives, in both object-oriented and procedure-oriented ways. Because it uses Tkinter for the underlying graphics, it needs a version of Python installed with Tk support.

turtle.onscreenclick()

This function is used to bind fun to a mouse-click event on canvas.

Syntax :

turtle.onscreenclick(fun, btn=1, add=None)

Parameters:

Arguments       Description                                                                                                                                                  
fun a function with two arguments, the coordinates of the clicked point on the canvas.
btn number of the mouse-button defaults to 1 (left mouse button)
add True or False. If True, new binding will be added, otherwise it will replace a former binding

                                                                                                                                       

Below is the implementation of the above method with an example :

Python3




# import packages
import turtle
import random
  
# global colors
col = ['red', 'yellow', 'green', 'blue',
       'white', 'black', 'orange', 'pink']
  
# method to call on screen click
  
  
def fxn(x, y):
    global col
    ind = random.randint(0, 7)
      
    # set screen color randomly
    sc.bgcolor(col[ind])
  
# set screen
sc = turtle.Screen()
sc.setup(400, 300)
  
# call method on screen click
turtle.onscreenclick(fxn)


Output :

Here we can find that whenever the user clicks (yellow-colored dot on  arrow) on screen it changes the background color of the turtle graphics window randomly.


Last Updated : 26 Jul, 2020
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