NEWT window closing:

    - New WindowEvent.EVENT_WINDOW_DESTROY_NOTIFY and 
      WindowListener.windowDestroyNotify() method.

    - Removed windowClosed() method for JNI hook

    - Added windowDestroyNotify() windowDestroyed(),
      where windowDestroyNotify() shall be called by the native implementation
      _before_ the window gets shutdown.
      The Window.java then sends a WindowEvent.EVENT_WINDOW_DESTROY_NOTIFY event,
      and either Window.java or it's owner GLWindow.java issues the destroy() 
      procedure.

    - Added GLEventListener.dispose(GLAutoDrawable),
      to allow user application to release GL ressources.
      Issued by GLWindow (-> see windowDestroyNotify())

    - X11 impl intercepts WM_DELETE_WINDOW, using Atom, 
      MacosX impl already uses the _before_ method (VERIFY),
      and Windows impl uses the WM_CLOSE event (VERIFY).

JOGL2 dispose/destroy ..
    - Added GLEventListener.dispose() to GLCanvas and GLJpanel

    - GL* toString() rearrangement, assumes it is issued by GLContext(),
      which indeed is the core information node.

    - Added proper destroy() methods and calls,
      to achieve a proper resource release at destruction.
      Instrumentizing almost all classes with a destroy() method,
      so no release function lookup is necessary.

    - misc changes ..

JOGL2 Demos
    - Fixed in regards to the above changes


git-svn-id: file:///usr/local/projects/SUN/JOGL/git-svn/../svn-server-sync/jogl-demos/branches/JOGL_2_SANDBOX@321 3298f667-5e0e-4b4a-8ed4-a3559d26a5f4

50 files changed, 334 insertions, 152 deletions

diff --git a/src/demos/GLInfo.java b/src/demos/GLInfo.java
index 70fcb91..be4732e 100755
--- a/src/demos/GLInfo.java
+++ b/src/demos/GLInfo.java
@@ -45,7 +45,7 @@ public class GLInfo implements GLEventListener {
             window.display();
 
             // Shut things down cooperatively
-            window.close();
+            window.destroy();
             window.getFactory().shutdown();
             System.out.println("GLInfo shut down cleanly.");
         } catch (Throwable t) {
@@ -78,6 +78,9 @@ public class GLInfo implements GLEventListener {
     public void reshape(GLAutoDrawable drawable, int x, int y, int width, int height) {
     }
 
+    public void dispose(GLAutoDrawable drawable) {
+    }
+
     public void display(GLAutoDrawable drawable) {
     }
 
diff --git a/src/demos/cg/runtime_ogl/cgGL_vertex_example.java b/src/demos/cg/runtime_ogl/cgGL_vertex_example.java
index d35bd6f..aded2d2 100644
--- a/src/demos/cg/runtime_ogl/cgGL_vertex_example.java
+++ b/src/demos/cg/runtime_ogl/cgGL_vertex_example.java
@@ -156,6 +156,9 @@ public class cgGL_vertex_example implements GLEventListener
     CgGL.cgGLDisableProfile(profile);
   }
 
+  public void dispose(GLAutoDrawable drawable) {
+  }
+
   public void display(GLAutoDrawable drawable) 
   {
     GL gl = drawable.getGL();
diff --git a/src/demos/cg/runtime_ogl_vertex_fragment/runtime_ogl_vertex_fragment.java b/src/demos/cg/runtime_ogl_vertex_fragment/runtime_ogl_vertex_fragment.java
index 1239bf9..50cae18 100644
--- a/src/demos/cg/runtime_ogl_vertex_fragment/runtime_ogl_vertex_fragment.java
+++ b/src/demos/cg/runtime_ogl_vertex_fragment/runtime_ogl_vertex_fragment.java
@@ -115,6 +115,9 @@ public class runtime_ogl_vertex_fragment implements GLEventListener
     gl.glEnable(GL.GL_DEPTH_TEST);
   }
 
+  public void dispose(GLAutoDrawable drawable) {
+  }
+
   private void CheckCgError()
   {
     /*CGerror*/ int err = CgGL.cgGetError();
diff --git a/src/demos/cubefbo/CubeObject.java b/src/demos/cubefbo/CubeObject.java
index e192554..0940902 100755
--- a/src/demos/cubefbo/CubeObject.java
+++ b/src/demos/cubefbo/CubeObject.java
@@ -86,6 +86,25 @@ class CubeObject {
     static final float[] material_spec = { 1.0f, 1.0f, 1.0f, 0.f };
     static final float[] zero_vec4 = { 0.0f, 0.0f, 0.0f, 0.f };
 
+    public void dispose(GL2 gl) {
+        gl.glDisableClientState(GL2ES1.GL_VERTEX_ARRAY);
+        gl.glDisableClientState(GL2ES1.GL_NORMAL_ARRAY);
+        gl.glDisableClientState(GL2ES1.GL_COLOR_ARRAY);
+        gl.glDisableClientState(GL2ES1.GL_TEXTURE_COORD_ARRAY);
+        this.cubeVertices.clear();
+        this.cubeVertices=null;
+        this.cubeColors.clear();
+        this.cubeColors=null;
+        this.cubeNormals.clear();
+        this.cubeNormals=null;
+        this.cubeIndices.clear();
+        this.cubeIndices=null;
+        if(null!=this.cubeTexCoords) {
+            this.cubeTexCoords.clear();
+            this.cubeTexCoords=null;
+        }
+    }
+
     public void reshape(GL2 gl, int x, int y, int width, int height) {
         float aspect = (height != 0) ? ((float)width / (float)height) : 1.0f;
 
diff --git a/src/demos/cubefbo/FBCubes.java b/src/demos/cubefbo/FBCubes.java
index 78233e2..50bd502 100755
--- a/src/demos/cubefbo/FBCubes.java
+++ b/src/demos/cubefbo/FBCubes.java
@@ -43,6 +43,7 @@ import javax.media.opengl.GL2;
 import javax.media.opengl.GLAutoDrawable;
 import javax.media.opengl.GLEventListener;
 import javax.media.opengl.awt.GLCanvas;
+import javax.media.opengl.util.FBObject;
 
 
 
@@ -54,13 +55,14 @@ class FBCubes implements GLEventListener, MouseListener, MouseMotionListener {
         cubeInner = new CubeObject(false);
         cubeMiddle = new CubeObject(true);
         cubeOuter = new CubeObject(true);
-        fbo1 = new FBObject(FBO_SIZE, FBO_SIZE);
-        fbo2 = new FBObject(FBO_SIZE, FBO_SIZE);
+        fbo1 = new FBObject(FBO_SIZE, FBO_SIZE, 0);
+        fbo2 = new FBObject(FBO_SIZE, FBO_SIZE, 0);
     }
 
     public void init(GLAutoDrawable drawable) {
         GL2 gl = drawable.getGL().getGL2();
-        drawable.setGL(new DebugGL2(gl));
+        // drawable.setGL(new DebugGL2(gl));
+        // gl = drawable.getGL().getGL2();
         fbo1.init(gl);
         fbo2.init(gl);
     }
@@ -78,6 +80,20 @@ class FBCubes implements GLEventListener, MouseListener, MouseMotionListener {
         motionIncr = 180.f / Math.max(width, height);
     }
 
+    public void dispose(GLAutoDrawable drawable) {
+        System.out.println("FBCubes.dispose: "+drawable);
+        GL2 gl = drawable.getGL().getGL2();
+        fbo1.destroy(gl);
+        fbo2.destroy(gl);
+        fbo1=null; fbo2=null;
+        cubeInner.dispose(gl);
+        cubeInner=null;
+        cubeMiddle.dispose(gl);
+        cubeMiddle=null;
+        cubeOuter.dispose(gl);
+        cubeOuter=null;
+    }
+
     public void display(GLAutoDrawable drawable) {
         //        System.out.println("display");
         GL2 gl = drawable.getGL().getGL2();
diff --git a/src/demos/cubefbo/FBObject.java b/src/demos/cubefbo/FBObject.java
deleted file mode 100755
index 0873888..0000000
--- a/src/demos/cubefbo/FBObject.java
+++ /dev/null
@@ -1,125 +0,0 @@
-/*
- * Copyright (c) 2008 Sun Microsystems, Inc. All Rights Reserved.
- * 
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are
- * met:
- * 
- * - Redistribution of source code must retain the above copyright
- *   notice, this list of conditions and the following disclaimer.
- * 
- * - Redistribution in binary form must reproduce the above copyright
- *   notice, this list of conditions and the following disclaimer in the
- *   documentation and/or other materials provided with the distribution.
- * 
- * Neither the name of Sun Microsystems, Inc. or the names of
- * contributors may be used to endorse or promote products derived from
- * this software without specific prior written permission.
- * 
- * This software is provided "AS IS," without a warranty of any kind. ALL
- * EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND WARRANTIES,
- * INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A
- * PARTICULAR PURPOSE OR NON-INFRINGEMENT, ARE HEREBY EXCLUDED. SUN
- * MICROSYSTEMS, INC. ("SUN") AND ITS LICENSORS SHALL NOT BE LIABLE FOR
- * ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING OR
- * DISTRIBUTING THIS SOFTWARE OR ITS DERIVATIVES. IN NO EVENT WILL SUN OR
- * ITS LICENSORS BE LIABLE FOR ANY LOST REVENUE, PROFIT OR DATA, OR FOR
- * DIRECT, INDIRECT, SPECIAL, CONSEQUENTIAL, INCIDENTAL OR PUNITIVE
- * DAMAGES, HOWEVER CAUSED AND REGARDLESS OF THE THEORY OF LIABILITY,
- * ARISING OUT OF THE USE OF OR INABILITY TO USE THIS SOFTWARE, EVEN IF
- * SUN HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
- * 
- */
-
-package demos.cubefbo;
-
-import javax.media.opengl.GL2ES1;
-import javax.media.opengl.GL2;
-
-
-class FBObject {
-    private int fb, fbo_tex, depth_rb, stencil_rb, width, height;
-
-    public FBObject(int width, int height) {
-
-        this.width = width;
-        this.height = height;
-    }        
-
-    public void init(GL2 gl) {
-        // generate fbo ..
-        int name[] = new int[1];
-
-        gl.glGenTextures(1, name, 0);
-        fbo_tex = name[0];
-        System.out.println("fbo_tex: "+fbo_tex);
-
-        gl.glBindTexture(GL2.GL_TEXTURE_2D, fbo_tex);
-        gl.glTexParameteri(GL2.GL_TEXTURE_2D, GL2.GL_TEXTURE_MAG_FILTER, GL2.GL_NEAREST);
-        gl.glTexParameteri(GL2.GL_TEXTURE_2D, GL2.GL_TEXTURE_MIN_FILTER, GL2.GL_NEAREST);
-        gl.glTexImage2D(GL2.GL_TEXTURE_2D, 0, GL2.GL_RGB8, width, height, 0,
-                        GL2.GL_RGB, GL2.GL_UNSIGNED_BYTE, null);
-
-        gl.glGenRenderbuffers(1, name, 0);
-        depth_rb = name[0];
-        System.out.println("depth_rb: "+depth_rb);
-
-        // Initialize the depth buffer:
-        gl.glBindRenderbuffer(GL2.GL_RENDERBUFFER, depth_rb);
-        gl.glRenderbufferStorage(GL2.GL_RENDERBUFFER,
-                                    GL2.GL_DEPTH_COMPONENT24, width, height);
-
-        // gl.glGenRenderbuffersEXT(1, name, 0);
-        // stencil_rb = name[0];
-        stencil_rb = 0;
-        System.out.println("stencil_rb: "+stencil_rb);
-
-        gl.glGenFramebuffers(1, name, 0);
-        fb = name[0];
-        System.out.println("fb: "+fb);
-
-        // bind fbo ..
-        gl.glBindFramebuffer(GL2.GL_FRAMEBUFFER, fb);
-
-        // Set up the color buffer for use as a renderable texture:
-        gl.glFramebufferTexture2D(GL2.GL_FRAMEBUFFER,
-                                  GL2.GL_COLOR_ATTACHMENT0,
-                                  GL2.GL_TEXTURE_2D, fbo_tex, 0);
-
-        // Set up the depth buffer attachment:
-        gl.glFramebufferRenderbuffer(GL2.GL_FRAMEBUFFER,
-                                        GL2.GL_DEPTH_ATTACHMENT,
-                                        GL2.GL_RENDERBUFFER, depth_rb);
-
-        if(stencil_rb!=0) {
-            // Initialize the stencil buffer:
-            gl.glBindRenderbuffer(GL2.GL_RENDERBUFFER, stencil_rb);
-
-            gl.glRenderbufferStorage(GL2.GL_RENDERBUFFER,
-                                        GL2.GL_STENCIL_INDEX8, width, height);
-
-            gl.glFramebufferRenderbuffer(GL2.GL_FRAMEBUFFER,
-                                            GL2.GL_STENCIL_ATTACHMENT,
-                                            GL2.GL_RENDERBUFFER, stencil_rb);
-        }
-        unbind(gl);
-    }
-
-    public void bind(GL2 gl) {
-        gl.glBindFramebuffer(GL2.GL_FRAMEBUFFER, fb);
-    }
-
-    public void unbind(GL2 gl) {
-        //        gl.glBindTexture(GL2.GL_TEXTURE_2D, 0);
-        //        gl.glDisable (GL2.GL_TEXTURE_2D);
-        gl.glBindFramebuffer(GL2.GL_FRAMEBUFFER, 0);
-    }
-
-    public int getFBName() {
-        return fb;
-    }
-    public int getTextureName() {
-        return fbo_tex;
-    }
-}
-
diff --git a/src/demos/es1/Info.java b/src/demos/es1/Info.java
index 4c7d667..8a3c061 100755
--- a/src/demos/es1/Info.java
+++ b/src/demos/es1/Info.java
@@ -43,7 +43,7 @@ public class Info implements GLEventListener {
             window.display();
 
             // Shut things down cooperatively
-            window.close();
+            window.destroy();
             window.getFactory().shutdown();
             System.out.println("Info shut down cleanly.");
         } catch (Throwable t) {
@@ -63,6 +63,9 @@ public class Info implements GLEventListener {
     public void reshape(GLAutoDrawable drawable, int x, int y, int width, int height) {
     }
 
+    public void dispose(GLAutoDrawable drawable) {
+    }
+
     public void display(GLAutoDrawable drawable) {
     }
 
diff --git a/src/demos/es1/RedSquare.java b/src/demos/es1/RedSquare.java
index 56a367a..7865f15 100755
--- a/src/demos/es1/RedSquare.java
+++ b/src/demos/es1/RedSquare.java
@@ -11,12 +11,22 @@ import com.sun.opengl.impl.fixed.GLFixedFuncImpl;
 
 import com.sun.javafx.newt.*;
 
-public class RedSquare implements KeyListener, MouseListener, GLEventListener {
+public class RedSquare implements WindowListener, KeyListener, MouseListener, GLEventListener {
 
     private GLWindow window;
     private GLU glu;
     private boolean quit = false;
 
+    public void windowResized(WindowEvent e) {
+    }
+
+    public void windowMoved(WindowEvent e) {
+    }
+
+    public void windowDestroyNotify(WindowEvent e) {
+        quit=true;
+    }
+
     public void keyPressed(KeyEvent e) { 
         System.out.println(e);
     }
@@ -72,6 +82,7 @@ public class RedSquare implements KeyListener, MouseListener, GLEventListener {
             }
             window = GLWindow.create(nWindow, caps);
 
+            window.addWindowListener(this);
             window.addMouseListener(this);
             window.addKeyListener(this);
             window.addGLEventListener(this);
@@ -84,12 +95,12 @@ public class RedSquare implements KeyListener, MouseListener, GLEventListener {
             // window.setFullscreen(true);
             window.setVisible(true);
 
-            while (!quit && window.getDuration() < 20000) {
+            do {
                 window.display();
-            }
+            } while (!quit && window.getDuration() < 20000) ;
 
             // Shut things down cooperatively
-            window.close();
+            window.destroy();
             window.getFactory().shutdown();
             System.out.println("RedSquare shut down cleanly.");
         } catch (Throwable t) {
@@ -182,6 +193,20 @@ public class RedSquare implements KeyListener, MouseListener, GLEventListener {
         gl.glDrawArrays(GL.GL_TRIANGLE_STRIP, 0, 4);
     }
 
+    public void dispose(GLAutoDrawable drawable) {
+        GLFixedFuncIf gl = GLFixedFuncUtil.getGLFixedFuncIf(drawable.getGL());
+        System.out.println("Demo.dispose: "+gl.getContext());
+        gl.glDisableClientState(gl.GL_VERTEX_ARRAY);
+        gl.glDisableClientState(gl.GL_COLOR_ARRAY);
+        glu.destroy();
+        glu = null;
+        colors.clear();
+        colors   = null;
+        vertices.clear();
+        vertices = null;
+        System.out.println("Demo.dispose: fin");
+    }
+
     public void displayChanged(GLAutoDrawable drawable, boolean modeChanged, boolean deviceChanged) {
     }
 
diff --git a/src/demos/es1/angeles/AngelesES1.java b/src/demos/es1/angeles/AngelesES1.java
index 28369e2..a58a198 100755
--- a/src/demos/es1/angeles/AngelesES1.java
+++ b/src/demos/es1/angeles/AngelesES1.java
@@ -136,6 +136,9 @@ public class AngelesES1 implements GLEventListener {
         System.out.println("reshape ..");
     }
 
+    public void dispose(GLAutoDrawable drawable) {
+    }
+
     public void display(GLAutoDrawable drawable) {
         long tick = System.currentTimeMillis();
 
diff --git a/src/demos/es1/angeles/AngelesGL.java b/src/demos/es1/angeles/AngelesGL.java
index 7df2526..386d1db 100755
--- a/src/demos/es1/angeles/AngelesGL.java
+++ b/src/demos/es1/angeles/AngelesGL.java
@@ -168,6 +168,9 @@ public class AngelesGL implements GLEventListener {
         //System.out.println("reshape ..");
     }
 
+    public void dispose(GLAutoDrawable drawable) {
+    }
+
     public void display(GLAutoDrawable drawable) {
         long tick = System.currentTimeMillis();
 
diff --git a/src/demos/es1/angeles/AngelesGLil.java b/src/demos/es1/angeles/AngelesGLil.java
index 8e71840..415008e 100755
--- a/src/demos/es1/angeles/AngelesGLil.java
+++ b/src/demos/es1/angeles/AngelesGLil.java
@@ -180,6 +180,9 @@ public class AngelesGLil implements GLEventListener {
         //System.out.println("reshape ..");
     }
 
+    public void dispose(GLAutoDrawable drawable) {
+    }
+
     public void display(GLAutoDrawable drawable) {
         long tick = System.currentTimeMillis();
 
diff --git a/src/demos/es1/angeles/Main.java b/src/demos/es1/angeles/Main.java
index 4983619..a4e345b 100755
--- a/src/demos/es1/angeles/Main.java
+++ b/src/demos/es1/angeles/Main.java
@@ -5,11 +5,17 @@ import javax.media.nwi.*;
 import javax.media.opengl.*;
 import com.sun.javafx.newt.*;
 
-public class Main implements MouseListener {
+public class Main implements WindowListener, MouseListener {
 
     public boolean quit = false;
     public GLWindow window = null;
 
+    public void windowResized(WindowEvent e) { }
+    public void windowMoved(WindowEvent e) { }
+    public void windowDestroyNotify(WindowEvent e) {
+        quit = true;
+    }
+
     public void mouseClicked(MouseEvent e) {
         if (e.getClickCount() > 1) {
             quit=true;
@@ -57,6 +63,7 @@ public class Main implements MouseListener {
             }
             window = GLWindow.create(nWindow, caps);
 
+            window.addWindowListener(this);
             window.addMouseListener(this);
 
             window.enablePerfLog(true);
@@ -86,7 +93,7 @@ public class Main implements MouseListener {
             }
 
             // Shut things down cooperatively
-            window.close();
+            window.destroy();
             window.getFactory().shutdown();
             System.out.println("angeles.Main shut down cleanly.");
         } catch (GLException e) {
diff --git a/src/demos/es1/cube/Cube.java b/src/demos/es1/cube/Cube.java
index 1ef6aab..cc2f8e8 100644
--- a/src/demos/es1/cube/Cube.java
+++ b/src/demos/es1/cube/Cube.java
@@ -43,6 +43,8 @@ import com.sun.opengl.impl.fixed.GLFixedFuncImpl;
 import com.sun.javafx.newt.*;
 
 public class Cube implements GLEventListener {
+    boolean quit = false;
+
     public Cube () {
         this(false, false);
     }
@@ -170,9 +172,10 @@ public class Cube implements GLEventListener {
             gl.glBindBuffer(GL.GL_ARRAY_BUFFER, vboNames[3]);
             gl.glBufferData(GL.GL_ARRAY_BUFFER, cubeTexCoords.limit() * BufferUtil.SIZEOF_SHORT, cubeTexCoords, GL.GL_STATIC_DRAW);
             gl.glTexCoordPointer(2, gl.GL_SHORT, 0, 0);
+            /* issues an GL_INVALID_ENUM
             if(null!=gl2es1) {
                 gl2es1.glTexEnvi(gl2es1.GL_TEXTURE_ENV, gl2es1.GL_TEXTURE_ENV_MODE, gl2es1.GL_INCR);
-            }
+            } */
         } else {
             gl.glDisableClientState(gl.GL_TEXTURE_COORD_ARRAY);
         }
@@ -193,6 +196,10 @@ public class Cube implements GLEventListener {
         // weird effect ..: gl.glCullFace(gl.GL_FRONT);
     }
 
+    public void dispose(GLAutoDrawable drawable) {
+        quit=true;
+    }
+
     public void display(GLAutoDrawable drawable) {
         GLFixedFuncIf gl = GLFixedFuncUtil.getGLFixedFuncIf(drawable.getGL());
 
@@ -333,12 +340,12 @@ public class Cube implements GLEventListener {
             window.setFullscreen(true);
             window.setVisible(true);
 
-            while (window.getDuration() < 31000) {
+            while (!quit && window.getDuration() < 31000) {
                 window.display();
             }
 
             // Shut things down cooperatively
-            window.close();
+            window.destroy();
             window.getFactory().shutdown();
             System.out.println("Cube shut down cleanly.");
         } catch (Throwable t) {
diff --git a/src/demos/es1/cube/CubeImmModeSink.java b/src/demos/es1/cube/CubeImmModeSink.java
index c7536d2..235d376 100644
--- a/src/demos/es1/cube/CubeImmModeSink.java
+++ b/src/demos/es1/cube/CubeImmModeSink.java
@@ -43,6 +43,8 @@ import java.nio.*;
 import com.sun.javafx.newt.*;
 
 public class CubeImmModeSink implements GLEventListener {
+    boolean quit = false;
+
     public CubeImmModeSink () {
         this(false, false);
     }
@@ -256,6 +258,10 @@ public class CubeImmModeSink implements GLEventListener {
         // weird effect ..: gl.glCullFace(gl.GL_FRONT);
     }
 
+    public void dispose(GLAutoDrawable drawable) {
+        quit=true;
+    }
+
     public void display(GLAutoDrawable drawable) {
         GLFixedFuncIf gl = GLFixedFuncUtil.getGLFixedFuncIf(drawable.getGL());
         GL2ES1 gl2es1=null;
@@ -425,12 +431,12 @@ public class CubeImmModeSink implements GLEventListener {
 
             long curTime;
             long startTime = System.currentTimeMillis();
-            while (((curTime = System.currentTimeMillis()) - startTime) < 31000) {
+            while (!quit && ((curTime = System.currentTimeMillis()) - startTime) < 31000) {
                 window.display();
             }
 
             // Shut things down cooperatively
-            window.close();
+            window.destroy();
             window.getFactory().shutdown();
             System.out.println("CubeImmModeSink shut down cleanly.");
         } catch (Throwable t) {
diff --git a/src/demos/es1/cubefbo/FBCubes.java b/src/demos/es1/cubefbo/FBCubes.java
index f5f98f1..624bbc2 100755
--- a/src/demos/es1/cubefbo/FBCubes.java
+++ b/src/demos/es1/cubefbo/FBCubes.java
@@ -59,6 +59,8 @@ class FBCubes implements GLEventListener {
         GLFixedFuncIf gl;
         {
             GL _gl = drawable.getGL();
+            // drawable.setGL(new DebugGL2(_gl.getGL2()));
+            // _gl = drawable.getGL();
             if(!GLFixedFuncUtil.isGLFixedFuncIf(_gl)) {
                 if(_gl.isGLES2()) {
                     gl = new GLFixedFuncImpl(_gl, new FixedFuncHook(_gl.getGL2ES2()));
@@ -70,6 +72,7 @@ class FBCubes implements GLEventListener {
                 gl = GLFixedFuncUtil.getGLFixedFuncIf(_gl);
             }
         }
+
         System.out.println(gl);
 
         gl.glGetError(); // flush error ..
@@ -110,6 +113,16 @@ class FBCubes implements GLEventListener {
         this.yRot = yRot;
     }
 
+    public void dispose(GLAutoDrawable drawable) {
+        GLFixedFuncIf gl = GLFixedFuncUtil.getGLFixedFuncIf(drawable.getGL());
+        fbo1.destroy(gl);
+        fbo1=null;
+        cubeInner.dispose(drawable);
+        cubeInner=null;
+        cubeOuter.dispose(drawable);
+        cubeOuter=null;
+    }
+
     public void display(GLAutoDrawable drawable) {
         GLFixedFuncIf gl = GLFixedFuncUtil.getGLFixedFuncIf(drawable.getGL());
 
diff --git a/src/demos/es1/cubefbo/Main.java b/src/demos/es1/cubefbo/Main.java
index f245733..9d3df4e 100755
--- a/src/demos/es1/cubefbo/Main.java
+++ b/src/demos/es1/cubefbo/Main.java
@@ -5,12 +5,19 @@ import javax.media.nwi.*;
 import javax.media.opengl.*;
 import com.sun.javafx.newt.*;
 
-public class Main implements MouseListener {
+public class Main implements WindowListener, MouseListener {
 
     public boolean quit = false;
     public GLWindow window = null;
 
+    public void windowResized(WindowEvent e) { }
+    public void windowMoved(WindowEvent e) { }
+    public void windowDestroyNotify(WindowEvent e) {
+        quit = true;
+    }
+
     public void mouseClicked(MouseEvent e) {
+        System.out.println("mouseevent: "+e);
         switch(e.getClickCount()) {
             case 1:
                 if(null!=window) {
@@ -57,6 +64,7 @@ public class Main implements MouseListener {
             }
             window = GLWindow.create(nWindow, caps);
 
+            window.addWindowListener(this);
             window.addMouseListener(this);
 
             window.enablePerfLog(true);
@@ -73,7 +81,7 @@ public class Main implements MouseListener {
             }
 
             // Shut things down cooperatively
-            window.close();
+            window.destroy();
             window.getFactory().shutdown();
             System.out.println("cubefbo.Main shut down cleanly.");
         } catch (GLException e) {
diff --git a/src/demos/es2/RedSquare.java b/src/demos/es2/RedSquare.java
index de7563e..b224233 100755
--- a/src/demos/es2/RedSquare.java
+++ b/src/demos/es2/RedSquare.java
@@ -80,7 +80,7 @@ public class RedSquare implements MouseListener, GLEventListener {
             }
 
             // Shut things down cooperatively
-            window.close();
+            window.destroy();
             window.getFactory().shutdown();
             System.out.println("RedSquare shut down cleanly.");
         } catch (Throwable t) {
@@ -189,6 +189,16 @@ public class RedSquare implements MouseListener, GLEventListener {
         st.glUseProgram(gl, false);
     }
 
+    public void dispose(GLAutoDrawable drawable) {
+        GL2ES2 gl = drawable.getGL().getGL2ES2();
+
+        st.destroy(gl);
+        st=null;
+        pmvMatrix.destroy();
+        pmvMatrix=null;
+        quit=true;
+    }
+
     public void display(GLAutoDrawable drawable) {
         GL2ES2 gl = drawable.getGL().getGL2ES2();
 
diff --git a/src/demos/es2/openmax/Cube.java b/src/demos/es2/openmax/Cube.java
index 1e194bc..d782bd3 100644
--- a/src/demos/es2/openmax/Cube.java
+++ b/src/demos/es2/openmax/Cube.java
@@ -43,6 +43,8 @@ import java.nio.*;
 import com.sun.javafx.newt.*;
 
 public class Cube implements GLEventListener {
+    boolean quit = false;
+
     public Cube () {
         this(false, false);
     }
@@ -212,6 +214,10 @@ public class Cube implements GLEventListener {
         // weird effect ..: gl.glCullFace(gl.GL_FRONT);
     }
 
+    public void dispose(GLAutoDrawable drawable) {
+        quit=true;
+    }
+
     public void display(GLAutoDrawable drawable) {
         GLFixedFuncIf gl = GLFixedFuncUtil.getGLFixedFuncIf(drawable.getGL());
 
@@ -352,12 +358,12 @@ public class Cube implements GLEventListener {
             window.setFullscreen(true);
             window.setVisible(true);
 
-            while (window.getDuration() < 31000) {
+            while (!quit && window.getDuration() < 31000) {
                 window.display();
             }
 
             // Shut things down cooperatively
-            window.close();
+            window.destroy();
             window.getFactory().shutdown();
             System.out.println("Cube shut down cleanly.");
         } catch (Throwable t) {
diff --git a/src/demos/es2/openmax/MovieCube.java b/src/demos/es2/openmax/MovieCube.java
index 1c98f70..7e6c588 100755
--- a/src/demos/es2/openmax/MovieCube.java
+++ b/src/demos/es2/openmax/MovieCube.java
@@ -113,10 +113,10 @@ public class MovieCube implements MouseListener, GLEventListener, OMXEventListen
 
             // Shut things down cooperatively
             if(null!=movie) {
-                movie.dispose(null);
+                movie.destroy(window.getGL());
                 movie=null;
             }
-            window.close();
+            window.destroy();
             window.getFactory().shutdown();
             System.out.println("MovieCube shut down cleanly.");
         } catch (Throwable t) {
@@ -183,6 +183,16 @@ public class MovieCube implements MouseListener, GLEventListener, OMXEventListen
         System.out.println("reshape "+width+"x"+height);
     }
 
+    public void dispose(GLAutoDrawable drawable) {
+        GL2ES2 gl = drawable.getGL().getGL2ES2();
+
+        movie.destroy(gl);
+        movie=null;
+        cube.dispose(drawable);
+        cube=null;
+        quit=true;
+    }
+
     public void display(GLAutoDrawable drawable) {
         GLFixedFuncIf gl = GLFixedFuncUtil.getGLFixedFuncIf(drawable.getGL());
 
diff --git a/src/demos/es2/openmax/MovieSimple.java b/src/demos/es2/openmax/MovieSimple.java
index a58156b..c626bc2 100755
--- a/src/demos/es2/openmax/MovieSimple.java
+++ b/src/demos/es2/openmax/MovieSimple.java
@@ -48,7 +48,6 @@ import java.net.*;
 import com.sun.javafx.newt.*;
 
 public class MovieSimple implements MouseListener, GLEventListener, OMXEventListener {
-
     private GLWindow window;
     private boolean quit = false;
     private boolean rotate = false;
@@ -119,10 +118,10 @@ public class MovieSimple implements MouseListener, GLEventListener, OMXEventList
 
             // Shut things down cooperatively
             if(null!=movie) {
-                movie.dispose(null);
+                movie.destroy(window.getGL());
                 movie=null;
             }
-            window.close();
+            window.destroy();
             window.getFactory().shutdown();
             System.out.println("MovieSimple shut down cleanly.");
         } catch (Throwable t) {
@@ -278,6 +277,18 @@ public class MovieSimple implements MouseListener, GLEventListener, OMXEventList
         st.glUseProgram(gl, false);
     }
 
+    public void dispose(GLAutoDrawable drawable) {
+        GL2ES2 gl = drawable.getGL().getGL2ES2();
+
+        movie.destroy(gl);
+        movie=null;
+        pmvMatrix.destroy();
+        pmvMatrix=null;
+        st.destroy(gl);
+        st=null;
+        quit=true;
+    }
+
     public void display(GLAutoDrawable drawable) {
         GL2ES2 gl = drawable.getGL().getGL2ES2();
 
diff --git a/src/demos/es2/perftst/Perftst.java b/src/demos/es2/perftst/Perftst.java
index d67f827..d27ba9e 100755
--- a/src/demos/es2/perftst/Perftst.java
+++ b/src/demos/es2/perftst/Perftst.java
@@ -72,7 +72,7 @@ public class Perftst implements MouseListener, GLEventListener {
             window.display();
 
             // Shut things down cooperatively
-            window.close();
+            window.destroy();
             window.getFactory().shutdown();
             System.out.println("Perftst shut down cleanly.");
         } catch (Throwable t) {
@@ -139,6 +139,17 @@ public class Perftst implements MouseListener, GLEventListener {
         st.glUseProgram(gl, false);
     }
 
+    public void dispose(GLAutoDrawable drawable) {
+        GL2ES2 gl = drawable.getGL().getGL2ES2();
+
+        st.destroy(gl);
+        st=null;
+        pmvMatrix.destroy();
+        pmvMatrix=null;
+        quit=true;
+    }
+
+
     public void display(GLAutoDrawable drawable) {
         pmod.run(drawable, 10);
     }
diff --git a/src/demos/fullscreen/FullscreenWorkaround.java b/src/demos/fullscreen/FullscreenWorkaround.java
index 39c689c..b337db7 100755
--- a/src/demos/fullscreen/FullscreenWorkaround.java
+++ b/src/demos/fullscreen/FullscreenWorkaround.java
@@ -75,6 +75,9 @@ public class FullscreenWorkaround implements GLEventListener {
     }
   }
 
+  public void dispose(GLAutoDrawable drawable) {
+  }
+
   public void display(GLAutoDrawable drawable) {}
   public void reshape(GLAutoDrawable drawable, int x, int y, int w, int h) {}
   public void displayChanged(GLAutoDrawable drawable, boolean modeChanged, boolean deviceChanged) {}
diff --git a/src/demos/gears/Gears.java b/src/demos/gears/Gears.java
index ba02ef4..4b2e431 100644
--- a/src/demos/gears/Gears.java
+++ b/src/demos/gears/Gears.java
@@ -127,6 +127,10 @@ public class Gears implements GLEventListener, MouseListener, MouseMotionListene
     gl.glTranslatef(0.0f, 0.0f, -40.0f);
   }
 
+  public void dispose(GLAutoDrawable drawable) {
+    System.out.println("Gears.dispose: "+drawable);
+  }
+
   public void display(GLAutoDrawable drawable) {
     // Turn the gears' teeth
     angle += 2.0f;
diff --git a/src/demos/hdr/HDR.java b/src/demos/hdr/HDR.java
index 5aedd53..2c86f30 100755
--- a/src/demos/hdr/HDR.java
+++ b/src/demos/hdr/HDR.java
@@ -379,6 +379,9 @@ public class HDR extends Demo {
     initComplete = true;
   }
 
+  public void dispose(GLAutoDrawable drawable) {
+  }
+
   public void display(GLAutoDrawable drawable) {
     //      printThreadName("display for Listener");
 
diff --git a/src/demos/hwShadowmapsSimple/HWShadowmapsSimple.java b/src/demos/hwShadowmapsSimple/HWShadowmapsSimple.java
index f287053..160e363 100644
--- a/src/demos/hwShadowmapsSimple/HWShadowmapsSimple.java
+++ b/src/demos/hwShadowmapsSimple/HWShadowmapsSimple.java
@@ -322,6 +322,11 @@ public class HWShadowmapsSimple extends Demo {
 
   }
 
+  public void dispose(GLAutoDrawable drawable) {
+    glu = null;
+    glut = null;
+  }
+
   public void display(GLAutoDrawable drawable) {
     viewer.update();
 
@@ -442,6 +447,9 @@ public class HWShadowmapsSimple extends Demo {
       fullyInitialized = true;
     }
 
+    public void dispose(GLAutoDrawable drawable) {
+    }
+
     public void display(GLAutoDrawable drawable) {
       GL2 gl = drawable.getGL().getGL2();
 
diff --git a/src/demos/infiniteShadowVolumes/InfiniteShadowVolumes.java b/src/demos/infiniteShadowVolumes/InfiniteShadowVolumes.java
index 9e648d3..ef4d67a 100644
--- a/src/demos/infiniteShadowVolumes/InfiniteShadowVolumes.java
+++ b/src/demos/infiniteShadowVolumes/InfiniteShadowVolumes.java
@@ -317,6 +317,22 @@ public class InfiniteShadowVolumes extends Demo {
     //      glutAddMenuEntry("quit [<esc>]", 27);
   }
 
+  public void dispose(GLAutoDrawable drawable) {
+    GL2 gl = drawable.getGL().getGL2();
+
+    gl.glDeleteLists(faceDisplayList, 1);
+    faceDisplayList=0;
+
+    int[] tmp = new int[1];
+    tmp[0]=wallTexObject;
+    gl.glDeleteTextures(1, tmp, 0);
+    wallTexObject = 0;
+
+    objectManip = null;
+    lightManip = null;
+    viewer = null;
+  }
+
   public void display(GLAutoDrawable drawable) {
     GL2 gl = drawable.getGL().getGL2();
 
diff --git a/src/demos/j2d/CustomText.java b/src/demos/j2d/CustomText.java
index 5072579..bfcbc79 100755
--- a/src/demos/j2d/CustomText.java
+++ b/src/demos/j2d/CustomText.java
@@ -237,6 +237,9 @@ public class CustomText extends Demo {
     gl.setSwapInterval(0);
   }
 
+  public void dispose(GLAutoDrawable drawable) {
+  }
+
   public void display(GLAutoDrawable drawable) {
     time.update();
 
diff --git a/src/demos/j2d/FlyingText.java b/src/demos/j2d/FlyingText.java
index 82ae950..f46dac2 100755
--- a/src/demos/j2d/FlyingText.java
+++ b/src/demos/j2d/FlyingText.java
@@ -277,6 +277,13 @@ public class FlyingText extends Demo {
     gl.setSwapInterval(0);
   }
 
+  public void dispose(GLAutoDrawable drawable) {
+    backgroundTexture = null;
+    renderer = null;
+    fps = null;
+    time = null;
+  }
+
   public void display(GLAutoDrawable drawable) {
     time.update();
 
diff --git a/src/demos/j2d/TestOverlay.java b/src/demos/j2d/TestOverlay.java
index a5a6fa6..59dcd8f 100755
--- a/src/demos/j2d/TestOverlay.java
+++ b/src/demos/j2d/TestOverlay.java
@@ -124,6 +124,13 @@ public class TestOverlay implements GLEventListener {
     font = new Font("SansSerif", Font.BOLD, 36);
   }
 
+  public void dispose(GLAutoDrawable drawable) {
+    font = null;
+    overlay = null;
+    time = null;
+    position = null;
+  }
+
   public void display(GLAutoDrawable drawable) {
     if (startTime == 0) {
       startTime = System.currentTimeMillis();
diff --git a/src/demos/j2d/TestTextRenderer.java b/src/demos/j2d/TestTextRenderer.java
index 035f3fd..4737ac5 100755
--- a/src/demos/j2d/TestTextRenderer.java
+++ b/src/demos/j2d/TestTextRenderer.java
@@ -124,6 +124,12 @@ public class TestTextRenderer implements GLEventListener {
     fps = new FPSCounter(drawable, 36);
   }
 
+  public void dispose(GLAutoDrawable drawable) {
+    renderer = null;
+    position = null;
+    time = null;
+  }
+
   public void display(GLAutoDrawable drawable) {
     time.update();
 
diff --git a/src/demos/j2d/TestTextureRenderer.java b/src/demos/j2d/TestTextureRenderer.java
index 79cfd44..13afdfe 100755
--- a/src/demos/j2d/TestTextureRenderer.java
+++ b/src/demos/j2d/TestTextureRenderer.java
@@ -141,6 +141,13 @@ public class TestTextureRenderer implements GLEventListener {
     renderer.markDirty(textBounds.x, textBounds.y, textBounds.width, textBounds.height);
   }
 
+  public void dispose(GLAutoDrawable drawable) {
+    renderer = null;
+    textBounds = null;
+    position = null;
+    time = null;
+  }
+
   public void display(GLAutoDrawable drawable) {
     if (startTime == 0) {
       startTime = System.currentTimeMillis();
diff --git a/src/demos/j2d/TextCube.java b/src/demos/j2d/TextCube.java
index 27d2541..1ef3144 100755
--- a/src/demos/j2d/TextCube.java
+++ b/src/demos/j2d/TextCube.java
@@ -120,6 +120,9 @@ public class TextCube extends Demo {
 //    gl.setSwapInterval(0);
   }
 
+  public void dispose(GLAutoDrawable drawable) {
+  }
+
   public void display(GLAutoDrawable drawable) {
     GL2 gl = drawable.getGL().getGL2();
     gl.glClear(GL2.GL_COLOR_BUFFER_BIT | GL2.GL_DEPTH_BUFFER_BIT);
diff --git a/src/demos/j2d/TextFlow.java b/src/demos/j2d/TextFlow.java
index 478f0bb..91951e0 100755
--- a/src/demos/j2d/TextFlow.java
+++ b/src/demos/j2d/TextFlow.java
@@ -148,6 +148,11 @@ public class TextFlow extends Demo {
     ((SystemTime) time).rebase();
   }
 
+  public void dispose(GLAutoDrawable drawable) {
+    renderer = null;
+    time = null;
+  }
+
   public void display(GLAutoDrawable drawable) {
     time.update();
 
diff --git a/src/demos/misc/Picking.java b/src/demos/misc/Picking.java
index 9d50284..1c05178 100755
--- a/src/demos/misc/Picking.java
+++ b/src/demos/misc/Picking.java
@@ -82,6 +82,9 @@ public class Picking
       glu.gluOrtho2D(0.0f,1.0f,0.0f,1.0f);
     }
 
+    public void dispose(GLAutoDrawable drawable) {
+    }
+
     public void display(GLAutoDrawable drawable) 
     {
       GL2 gl = drawable.getGL().getGL2();
diff --git a/src/demos/multisample/Multisample.java b/src/demos/multisample/Multisample.java
index 2fb76b3..91f57c3 100755
--- a/src/demos/multisample/Multisample.java
+++ b/src/demos/multisample/Multisample.java
@@ -137,6 +137,9 @@ public class Multisample {
       gl.glOrtho(-1, 1, -1, 1, -1, 1);
     }
 
+    public void dispose(GLAutoDrawable drawable) {
+    }
+
     public void display(GLAutoDrawable drawable) {
       GL2 gl = drawable.getGL().getGL2();
 
diff --git a/src/demos/nurbs/curveapp/GLListener.java b/src/demos/nurbs/curveapp/GLListener.java
index 27d8f5f..3a1f47a 100755
--- a/src/demos/nurbs/curveapp/GLListener.java
+++ b/src/demos/nurbs/curveapp/GLListener.java
@@ -52,6 +52,13 @@ public class GLListener implements GLEventListener {
     gl.glClearColor(1, 1, 1, 1);
   }
 
+  public void dispose(GLAutoDrawable drawable) {
+    this.gl = null;
+    this.glu = null;
+    this.glut=null;
+    this.nurbs = null;
+  }
+
   /* (non-Javadoc)
    * @see javax.media.opengl.GLEventListener#display(javax.media.opengl.GLAutoDrawable)
    */
diff --git a/src/demos/nurbs/surfaceapp/GLListener.java b/src/demos/nurbs/surfaceapp/GLListener.java
index ca266f0..ced405d 100755
--- a/src/demos/nurbs/surfaceapp/GLListener.java
+++ b/src/demos/nurbs/surfaceapp/GLListener.java
@@ -128,6 +128,13 @@ public class GLListener implements GLEventListener {
     gl.glHint(GL2.GL_PERSPECTIVE_CORRECTION_HINT, GL2.GL_NICEST);
   }
 
+  public void dispose(GLAutoDrawable drawable) {
+    this.gl = null;
+    this.glu = null;
+    this.glut=null;
+    this.nurbs = null;
+  }
+
   /* (non-Javadoc)
    * @see javax.media.opengl.GLEventListener#display(javax.media.opengl.GLAutoDrawable)
    */
diff --git a/src/demos/particles/engine/GLComponent.java b/src/demos/particles/engine/GLComponent.java
index 52bf6af..1b56f85 100755
--- a/src/demos/particles/engine/GLComponent.java
+++ b/src/demos/particles/engine/GLComponent.java
@@ -70,6 +70,10 @@ public class GLComponent extends GLCanvas implements GLEventListener {
         return caps;
     }
     
+    public void dispose(GLAutoDrawable drawable) {
+        this.engine=null;
+    }
+
     public void display(GLAutoDrawable drawable) {
         final GL2 gl = drawable.getGL().getGL2();
         engine.draw(gl);
diff --git a/src/demos/printext/PrintExt.java b/src/demos/printext/PrintExt.java
index 0d5e101..d2abe17 100755
--- a/src/demos/printext/PrintExt.java
+++ b/src/demos/printext/PrintExt.java
@@ -49,6 +49,9 @@ public class PrintExt {
       runExit();
     }
 
+    public void dispose(GLAutoDrawable drawable) {
+    }
+
     public void display(GLAutoDrawable drawable) {
     }
 
diff --git a/src/demos/proceduralTexturePhysics/ProceduralTexturePhysics.java b/src/demos/proceduralTexturePhysics/ProceduralTexturePhysics.java
index 4514238..f4dc264 100644
--- a/src/demos/proceduralTexturePhysics/ProceduralTexturePhysics.java
+++ b/src/demos/proceduralTexturePhysics/ProceduralTexturePhysics.java
@@ -219,6 +219,13 @@ public class ProceduralTexturePhysics extends Demo {
         }
     }
 
+    public void dispose(GLAutoDrawable drawable) {
+        water.destroy();
+        water = null;
+        viewer = null;
+        timer = null;
+    }
+
     public void display(GLAutoDrawable drawable) {
         if (++frameCount == 30) {
             timer.stop();
diff --git a/src/demos/proceduralTexturePhysics/Water.java b/src/demos/proceduralTexturePhysics/Water.java
index cf3287a..8304b6a 100644
--- a/src/demos/proceduralTexturePhysics/Water.java
+++ b/src/demos/proceduralTexturePhysics/Water.java
@@ -445,6 +445,9 @@ public class Water {
       initOpenGL(gl);
     }
 
+    public void dispose(GLAutoDrawable drawable) {
+    }
+
     public void display(GLAutoDrawable drawable) {
 
       GL2 gl = drawable.getGL().getGL2();
diff --git a/src/demos/tess/Tess.java b/src/demos/tess/Tess.java
index c7bde54..1137c15 100644
--- a/src/demos/tess/Tess.java
+++ b/src/demos/tess/Tess.java
@@ -186,6 +186,10 @@ public class Tess {
         public void displayChanged(GLAutoDrawable drawable, boolean modeChanged, boolean deviceChanged) {
         }
 
+        public void dispose(GLAutoDrawable drawable) {
+            gl = null;
+        }
+
         public void display(GLAutoDrawable drawable) {
             gl.glClear(GL2.GL_COLOR_BUFFER_BIT);
             gl.glColor3d(1.0, 1.0, 1.0);
diff --git a/src/demos/testContextDestruction/TestContextDestruction.java b/src/demos/testContextDestruction/TestContextDestruction.java
index 64cc4a7..d0c3a8f 100755
--- a/src/demos/testContextDestruction/TestContextDestruction.java
+++ b/src/demos/testContextDestruction/TestContextDestruction.java
@@ -216,6 +216,9 @@ public class TestContextDestruction {
       reshape(drawable, 0, 0, drawable.getWidth(), drawable.getHeight());
     }
 
+    public void dispose(GLAutoDrawable drawable) {
+    }
+
     public void display(GLAutoDrawable drawable) {
       angle += 2.0f;
 
diff --git a/src/demos/testContextSharing/TestContextSharing.java b/src/demos/testContextSharing/TestContextSharing.java
index ac1a0ff..84faf6f 100644
--- a/src/demos/testContextSharing/TestContextSharing.java
+++ b/src/demos/testContextSharing/TestContextSharing.java
@@ -122,6 +122,9 @@ public class TestContextSharing {
       gl.glEnable(GL2.GL_NORMALIZE);
     }
 
+    public void dispose(GLAutoDrawable drawable) {
+    }
+
     public void display(GLAutoDrawable drawable) {
       GL2 gl = drawable.getGL().getGL2();
 
diff --git a/src/demos/texture/TestSubImage.java b/src/demos/texture/TestSubImage.java
index 3ff20d1..0024e50 100755
--- a/src/demos/texture/TestSubImage.java
+++ b/src/demos/texture/TestSubImage.java
@@ -109,6 +109,9 @@ public class TestSubImage {
       gl.glLoadIdentity();
     }
 
+    public void dispose(GLAutoDrawable drawable) {
+    }
+
     public void display(GLAutoDrawable drawable) {
       GL2 gl = drawable.getGL().getGL2();
       gl.glClear(GL.GL_COLOR_BUFFER_BIT | GL.GL_DEPTH_BUFFER_BIT);
diff --git a/src/demos/texture/TestTexture.java b/src/demos/texture/TestTexture.java
index 85876a3..3ece9ef 100755
--- a/src/demos/texture/TestTexture.java
+++ b/src/demos/texture/TestTexture.java
@@ -166,6 +166,9 @@ public class TestTexture implements GLEventListener {
     gl.glLoadIdentity();
   }
 
+  public void dispose(GLAutoDrawable drawable) {
+  }
+
   public void display(GLAutoDrawable drawable) {
     GL2 gl = drawable.getGL().getGL2();
     gl.glClear(GL.GL_COLOR_BUFFER_BIT | GL.GL_DEPTH_BUFFER_BIT);
diff --git a/src/demos/vertexArrayRange/VertexArrayRange.java b/src/demos/vertexArrayRange/VertexArrayRange.java
index cffe305..c97428b 100644
--- a/src/demos/vertexArrayRange/VertexArrayRange.java
+++ b/src/demos/vertexArrayRange/VertexArrayRange.java
@@ -460,6 +460,9 @@ public class VertexArrayRange extends Demo {
     }
   }
 
+  public void dispose(GLAutoDrawable drawable) {
+  }
+
   public void display(GLAutoDrawable drawable) {
     GL2 gl = drawable.getGL().getGL2();
 
diff --git a/src/demos/vertexBufferObject/VertexBufferObject.java b/src/demos/vertexBufferObject/VertexBufferObject.java
index 27ab5e8..9998f15 100644
--- a/src/demos/vertexBufferObject/VertexBufferObject.java
+++ b/src/demos/vertexBufferObject/VertexBufferObject.java
@@ -463,6 +463,9 @@ public class VertexBufferObject extends Demo {
     }
   }
 
+  public void dispose(GLAutoDrawable drawable) {
+  }
+
   public void display(GLAutoDrawable drawable) {
     if (!initComplete) {
       return;
diff --git a/src/demos/vertexProgRefract/VertexProgRefract.java b/src/demos/vertexProgRefract/VertexProgRefract.java
index 408ec53..693d0a2 100644
--- a/src/demos/vertexProgRefract/VertexProgRefract.java
+++ b/src/demos/vertexProgRefract/VertexProgRefract.java
@@ -348,6 +348,9 @@ public class VertexProgRefract extends Demo {
     initComplete = true;
   }
 
+  public void dispose(GLAutoDrawable drawable) {
+  }
+
   public void display(GLAutoDrawable drawable) {
     if (!initComplete) {
       return;
diff --git a/src/demos/vertexProgWarp/VertexProgWarp.java b/src/demos/vertexProgWarp/VertexProgWarp.java
index 1e51beb..03f42ae 100644
--- a/src/demos/vertexProgWarp/VertexProgWarp.java
+++ b/src/demos/vertexProgWarp/VertexProgWarp.java
@@ -245,6 +245,9 @@ public class VertexProgWarp extends Demo {
     initComplete = true;
   }
 
+  public void dispose(GLAutoDrawable drawable) {
+  }
+
   public void display(GLAutoDrawable drawable) {
     if (!initComplete) {
       return;