1 files changed, 4 insertions, 8 deletions
diff --git a/src/demos/vertexBufferObject/VertexBufferObject.java b/src/demos/vertexBufferObject/VertexBufferObject.java
index ee78499..97a5483 100644
--- a/src/demos/vertexBufferObject/VertexBufferObject.java
+++ b/src/demos/vertexBufferObject/VertexBufferObject.java
@@ -42,6 +42,7 @@ import javax.swing.*;
 import javax.media.opengl.*;
 import com.sun.opengl.utils.*;
 import com.sun.opengl.utils.*;
+import demos.common.*;
 import demos.util.*;
 
 /** <P> A port of NVidia's [tm] Vertex Array Range demonstration to
@@ -67,7 +68,7 @@ import demos.util.*;
     same data in system memory allows. </P>
 */
 
-public class VertexBufferObject implements GLEventListener {
+public class VertexBufferObject extends Demo {
   public static void main(String[] args) {
     boolean vboEnabled = true;
 
@@ -124,15 +125,10 @@ public class VertexBufferObject implements GLEventListener {
     setFlag('i', true);   // infinite viewer and light
   }
 
-  public void setDemoListener(DemoListener listener) {
-    demoListener = listener;
-  }
-
   //----------------------------------------------------------------------
   // Internals only below this point
   //
 
-  private DemoListener demoListener;
   private boolean initComplete;
   private boolean[] b = new boolean[256];
   private static final int SIZEOF_FLOAT = 4;
@@ -266,7 +262,7 @@ public class VertexBufferObject implements GLEventListener {
       new Thread(new Runnable() {
           public void run() {
             JOptionPane.showMessageDialog(null, message, "Unavailable extension", JOptionPane.ERROR_MESSAGE);
-            demoListener.shutdownDemo();
+            shutdownDemo();
           }
         }).start();
       throw new RuntimeException(message);
@@ -366,7 +362,7 @@ public class VertexBufferObject implements GLEventListener {
     setFlag(k, !getFlag(k));
     // Quit on escape or 'q'
     if ((k == (char) 27) || (k == 'q')) {
-      demoListener.shutdownDemo();
+      shutdownDemo();
       return;
     }