​

function setup() {

  canvas = createCanvas(400, 400);

​

  let realcanvas = canvas.canvas;

  realcanvas.addEventListener("touchstart", function (event) {

    event.preventDefault();

  });

  realcanvas.addEventListener("touchmove", function (event) {

    event.preventDefault();

  });

  realcanvas.addEventListener("touchend", function (event) {

    event.preventDefault();

  });

  realcanvas.addEventListener("touchcancel", function (event) {

    event.preventDefault();

  });

}

​

function draw() {

  background(220);

}

​