import interfascia.*;

GUIController c;
IFButton b1, b2;
IFLabel l;

void setup() {
  size(200, 100);
  background(155);
  
  c = new GUIController (this);
  
  b1 = new IFButton ("Green", 40, 40, 40, 17);
  b2 = new IFButton ("Blue", 120, 40, 40, 17);

  b1.addActionListener(this);
  b2.addActionListener(this);

  c.add (b1);
  c.add (b2);
}

void draw() {

}

void actionPerformed (GUIEvent e) {
  if (e.getSource() == b1) {
    background(100, 155, 100);
  } else if (e.getSource() == b2) {
    background(100, 100, 130);
  }
}