When searching the forum I found the following code (posted by smallfry back in 2007)

It creates a second PApplet window (inside a Java Frame).

When I close either window it closes both, what I want to be able to do is close the second window leaving the initial window open.

Removing the System.exit(0) simply prevents the second window from closing!

Any ideas welcome?

Code:

private static secondCanvas sCanvas;
private static secondApplet sApplet;

import java.awt.*;
import java.awt.event.*;
import processing.core.*;

int xPos = 0;
int yPos = 0;

void setup() {
  size(400, 400);
  smooth();
  background(0);
  noStroke();

  sApplet = new secondApplet();
  sCanvas = new secondCanvas("follower", sApplet, screen.width/2, screen.height/2);
}

void draw() {
  background(0);
  fill(200, 100, 0);
  rect(xPos++,0, 100, 100);
  if(xPos >= width) xPos = 0;
}


public class secondApplet extends PApplet {

  public void setup() {
    size(400, 400);
    background(255, 0, 0);
    frameRate(10);
  }

  public void draw() {
    background(0);
    fill(200, 100, 0);
    rect(0, yPos++, 100, 100);
    if(yPos >= height) yPos = 0;
  }
}


public class secondCanvas extends Frame {
  public secondCanvas(String name, PApplet embed, int x, int y) {
    super(name);

    // add the PApplet to the Frame
    setLayout(new BorderLayout());
    add(embed, BorderLayout.CENTER);

    // ensures that the animation thread is started and
    // that other internal variables are properly set.
    embed.init();

    // add an exit on close listener
    addWindowListener(new WindowAdapter() {
      public void windowClosing(WindowEvent evt) {
        // exit the application
        System.exit(0);
      }
    });

    setSize(400, 400);
    setLocation(x, y);
    setVisible(true);

  }
}
 

That worked a treat.

Thanks  PhiLho