Name

mouseButtonVar

Examples
# Click within the image and press the left and right mouse
# buttons to change the value of the rectangle
draw <- function() {
    rect(25, 25, 50, 50)
}

mousePressed <- function() {
    if (mouseButtonVar == LEFT) {
        fill(0)
    } else if (mouseButtonVar == RIGHT) {
        fill(255)
    } else {
        fill(126)
    }
}
# Click within the image and press the left and right mouse
# buttons to change the value of the rectangle
draw <- function() {
    if (mousePressedVar && (mouseButtonVar == LEFT)) {
        fill(0)
    } else if (mousePressedVar && (mouseButtonVar == RIGHT)) {
        fill(255)
    } else {
        fill(126)
    }
    rect(25, 25, 50, 50)
}
Description When a mouse button is pressed, the value of the system variable mouseButton is set to either LEFT, RIGHT, or CENTER, depending on which button is pressed. (If no button is pressed, mouseButton may be reset to 0. For that reason, it's best to use mousePressed first to test if any button is being pressed, and only then test the value of mouseButton, as shown in the examples above.)
Syntax
Related mouseX
mouseY
pmouseX
pmouseY
mousePressed_var
mousePressed
mouseReleased
mouseClicked
mouseMoved
mouseDragged
mouseWheel
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