PYGLET – On Key Release Event

In this article we will see how we can trigger on key release event in PYGLET module in python. Pyglet is easy to use but powerful library for developing visually rich GUI applications like games, multimedia etc. A window is a “heavyweight” object occupying operating system resources. Windows may appear as floating regions or can be set to fill an entire screen (fullscreen). A key on the keyboard was pressed (and held down) then key pressed event is called and when this key is released key release event get called. Key press and release event is the major events to handle keyboard inputs.
We can create a window with the help of command given below  

pyglet.window.Window(width, height, title)

Below is the syntax of the on key release event, this method get called when this event is triggered  

@window.event       
def on_key_release(symbol, modifiers):
    print("Key is released")

Below is the implementation

Python3

# importing pyglet module
import pyglet
import pyglet.window.key

# width of window
width = 500

# height of window
height = 500

# caption i.e title of the window
title = "Geeksforgeeks"

# creating a window
window = pyglet.window.Window(width, height, title)

# text
text = "GeeksforGeeks"

# creating a label with font = times roman
# font size = 36
# aligning it to the centre
label = pyglet.text.Label(text,
                          font_name ='Times New Roman',
                          font_size = 36,
                          x = window.width//2, y = window.height//2,
                          anchor_x ='center', anchor_y ='center')

new_label = pyglet.text.Label(text,
                          font_name ='Times New Roman',
                          font_size = 10,
                          x = 25, y = 25)

# on draw event
@window.event
def on_draw():


    # clearing the window
    window.clear()

    # drawing the label on the window
    label.draw()


# key press event
@window.event
def on_key_press(symbol, modifier):

    print("Some key is pressed")

    # key "C" get press
    if symbol == pyglet.window.key.C:

        print("Key C is pressed")


# on key release event event
@window.event
def on_key_release(symbol, modifier):

    # printing some message
    print("Key is released")




# image for icon
img = image = pyglet.resource.image("logo.png")

# setting image as icon
window.set_icon(img)


# start running the application
pyglet.app.run()

Output :

Some key is pressed
Key C is pressed
Key is released