// This example is from the book _Java in a Nutshell_ by David Flanagan.
// Written by David Flanagan.  Copyright (c) 1996 O'Reilly & Associates.
// You may study, use, modify, and distribute this example for any purpose.
// This example is provided WITHOUT WARRANTY either expressed or implied.

import java.applet.*;
import java.awt.*;

public class Scribble extends Applet {
    private int last_x = 0;
    private int last_y = 0;
    
    // called when the user clicks
    public boolean mouseDown(Event e, int x, int y)
    {
        last_x = x; last_y = y;
        return true;
    }
    
    // called when the mouse moves with the button down
    public boolean mouseDrag(Event e, int x, int y)
    {
        Graphics g = getGraphics();
        g.drawLine(last_x, last_y, x, y);
        last_x = x;
        last_y = y;
        return true;
    }
}