import java.awt.Graphics;
import java.awt.Event;
import java.awt.Color;

public class InterSouris2 extends java.applet.Applet {
  Color c = new Color(0, 0, 255);

  public boolean mouseDown(Event e, int x, int y) {
    c = new Color(255, 255, 255);
    repaint();
    return true;
  }

  public boolean mouseUp(Event e, int x, int y) {
    c = new Color(255, 0, 0);
    repaint();
    return true;
  }

  public void paint(Graphics g) {
    g.setColor(c);
    g.drawLine(0, 0, size().width, size().height);
  }
}