Wheel mouse

/**
Wheel mouse taken from http://wiki.processing.org/index.php/Wheel_mouse
@author Rick Companje
*/
import java.awt.event.*;
 
void setup() {
  addMouseWheelListener(new MouseWheelListener() { 
    public void mouseWheelMoved(MouseWheelEvent mwe) { 
      mouseWheel(mwe.getWheelRotation());
  }}); 
}
 
void mouseWheel(int delta) {
  println("mouse has moved by " + delta + " units."); 
}
 
void draw() {
 
}