mouse_button

When a mouse button is pressed, the value of the system variable mouse_button is set to either LEFT, RIGHT, or CENTER, depending on which button is pressed.

Examples

# click within the image and press
# the left and right mouse buttons to
# change the value of the rectangle
def draw():
    if py5.is_mouse_pressed and py5.mouse_button == py5.LEFT:
        py5.fill(0)
    elif py5.is_mouse_pressed and py5.mouse_button == py5.RIGHT:
        py5.fill(255)
    else:
        py5.fill(126)

    py5.rect(25, 25, 50, 50)

# click within the image and press
# the left and right mouse buttons to
# change the value of the rectangle
def draw():
    py5.rect(25, 25, 50, 50)


def mouse_pressed():
    if py5.mouse_button == py5.LEFT:
        py5.fill(0)
    elif py5.mouse_button == py5.RIGHT:
        py5.fill(255)
    else:
        py5.fill(126)

Description

When a mouse button is pressed, the value of the system variable mouse_button is set to either LEFT, RIGHT, or CENTER, depending on which button is pressed. (If no button is pressed, mouse_button may be reset to 0. For that reason, it’s best to use mouse_pressed first to test if any button is being pressed, and only then test the value of mouse_button, as shown in the examples.)

Underlying Processing field: mouseButton

Updated on September 01, 2022 16:36:02pm UTC