Merge remote-tracking branch 'github-sgothel/master' into armv6hf

27 files changed, 995 insertions, 241 deletions

diff --git a/src/newt/classes/com/jogamp/newt/Display.java b/src/newt/classes/com/jogamp/newt/Display.java
index 7b6849a30..1e9a0e9eb 100644
--- a/src/newt/classes/com/jogamp/newt/Display.java
+++ b/src/newt/classes/com/jogamp/newt/Display.java
@@ -141,6 +141,23 @@ public abstract class Display {
      */
     public abstract String getType();
 
+    /**
+     * Sets a new {@link EDTUtil} and returns the previous one.
+     * <p>
+     * If <code>newEDTUtil</code> is <code>null</code>, 
+     * the device's default EDTUtil is created and used.
+     * </p>
+     * <p>
+     * If a previous one exists and it differs from the new one, 
+     * it's being stopped, wait-until-idle and reset to allow restart.
+     * </p>
+     * <p>
+     * If <code>newEDTUtil</code> is not null and equals the previous one,
+     * <code>null</code> is returned and no change is being made.
+     * </p>
+     */
+    public abstract EDTUtil setEDTUtil(EDTUtil newEDTUtil);
+    
     public abstract EDTUtil getEDTUtil();
 
     public abstract boolean isEDTRunning();
diff --git a/src/newt/classes/com/jogamp/newt/Window.java b/src/newt/classes/com/jogamp/newt/Window.java
index 71e86d520..e8537fec5 100644
--- a/src/newt/classes/com/jogamp/newt/Window.java
+++ b/src/newt/classes/com/jogamp/newt/Window.java
@@ -40,8 +40,20 @@ import javax.media.nativewindow.NativeWindow;
 import javax.media.nativewindow.WindowClosingProtocol;
 
 /**
- * Specifying the public Window functionality for the
- * using a Window and for shadowing one like {@link com.jogamp.newt.opengl.GLWindow}.
+ * Specifying NEWT's Window functionality:
+ * <ul>
+ *   <li>On- and offscreen windows</li>
+ *   <li>Keyboard and multi-pointer input</li>
+ *   <li>Native reparenting</li>
+ *   <li>Toggable fullscreen and decoration mode</li>
+ *   <li>Transparency</li>
+ *   <li>... and more</li>
+ * </ul>
+ * <p>
+ * One use case is {@link com.jogamp.newt.opengl.GLWindow}, which delegates 
+ * window operation to an instance of this interface while providing OpenGL 
+ * functionality.
+ * </p>
  */
 public interface Window extends NativeWindow, WindowClosingProtocol {
     public static final boolean DEBUG_MOUSE_EVENT = Debug.debug("Window.MouseEvent");
diff --git a/src/newt/classes/com/jogamp/newt/awt/NewtCanvasAWT.java b/src/newt/classes/com/jogamp/newt/awt/NewtCanvasAWT.java
index 9af4a02ae..6f0028a77 100644
--- a/src/newt/classes/com/jogamp/newt/awt/NewtCanvasAWT.java
+++ b/src/newt/classes/com/jogamp/newt/awt/NewtCanvasAWT.java
@@ -42,7 +42,9 @@ import java.security.PrivilegedAction;
 import java.util.Set;
 
 import javax.media.nativewindow.NativeWindow;
+import javax.media.nativewindow.NativeWindowFactory;
 import javax.media.nativewindow.OffscreenLayerOption;
+import javax.media.nativewindow.OffscreenLayerSurface;
 import javax.media.nativewindow.WindowClosingProtocol;
 import javax.swing.MenuSelectionManager;
 
@@ -261,17 +263,35 @@ public class NewtCanvasAWT extends java.awt.Canvas implements WindowClosingProto
     private final FocusPropertyChangeListener focusPropertyChangeListener = new FocusPropertyChangeListener();
     private volatile KeyboardFocusManager keyboardFocusManager = null;
 
-    /** sets a new NEWT child, provoking reparenting. */
-    private NewtCanvasAWT setNEWTChild(Window child) {
-        if(newtChild!=child) {
-            newtChild = child;
-            if(isDisplayable()) {
-                // reparent right away, addNotify has been called already
-                final java.awt.Container cont = AWTMisc.getContainer(this);
-                reparentWindow( (null!=child) ? true : false, cont );
-            }
+    /** 
+     * Sets a new NEWT child, provoking reparenting.
+     * <p>
+     * A previously detached <code>newChild</code> will be released to top-level status
+     * and made invisible. 
+     * </p>
+     * <p>
+     * Note: When switching NEWT child's, detaching the previous first via <code>setNEWTChild(null)</code> 
+     * produced much cleaner visual results. 
+     * </p>
+     * @return the previous attached newt child.  
+     */
+    public Window setNEWTChild(Window newChild) {
+        final Window prevChild = newtChild;
+        if(DEBUG) {
+            System.err.println("NewtCanvasAWT.setNEWTChild.0: win "+newtWinHandleToHexString(prevChild)+" -> "+newtWinHandleToHexString(newChild));
+        }
+        final java.awt.Container cont = AWTMisc.getContainer(this);
+        // remove old one
+        if(null != newtChild) {
+            reparentWindow( false, cont );
+            newtChild = null;
         }
-        return this;
+        // add new one, reparent only if ready
+        newtChild = newChild;
+        if( isDisplayable() && null != newChild) {
+            reparentWindow( true, cont );
+        }
+        return prevChild;
     }
 
     /** @return the current NEWT child */
@@ -304,13 +324,13 @@ public class NewtCanvasAWT extends java.awt.Canvas implements WindowClosingProto
             awtKeyAdapter.removeFrom(this);
             awtKeyAdapter = null;
         }
-        newtChild.setKeyboardFocusHandler(null);
         if(null != keyboardFocusManager) {
             keyboardFocusManager.removePropertyChangeListener("focusOwner", focusPropertyChangeListener);
             keyboardFocusManager = null;
         }
         
         if( null != newtChild ) {
+            newtChild.setKeyboardFocusHandler(null);
             if(attach) {
                 if(null == jawtWindow.getGraphicsConfiguration()) {
                     throw new InternalError("XXX");
@@ -358,7 +378,7 @@ public class NewtCanvasAWT extends java.awt.Canvas implements WindowClosingProto
             // if ( isShowing() == true  ) -> Container is already visible.
             System.err.println("NewtCanvasAWT.addNotify: "+newtChild+", "+this+", visible "+isVisible()+", showing "+isShowing()+
                                ", displayable "+isDisplayable()+" -> "+cont);
-        }  
+        }
         reparentWindow(true, cont);
     }
 
@@ -368,7 +388,17 @@ public class NewtCanvasAWT extends java.awt.Canvas implements WindowClosingProto
         if(DEBUG) {
             System.err.println("NewtCanvasAWT.removeNotify: "+newtChild+", from "+cont);
         }
+        final OffscreenLayerSurface ols = NativeWindowFactory.getOffscreenLayerSurface(newtChild, true);
+        if(null != ols && ols.isSurfaceLayerAttached()) {
+            ols.detachSurfaceLayer();
+        }      
         reparentWindow(false, cont);
+        
+        if(null != jawtWindow) {
+            NewtFactoryAWT.destroyNativeWindow(jawtWindow);
+            jawtWindow=null;
+        }
+        
         super.removeNotify();
     }
 
@@ -376,14 +406,19 @@ public class NewtCanvasAWT extends java.awt.Canvas implements WindowClosingProto
       if(null==newtChild) {
         return; // nop
       }
+      if(DEBUG) {
+          System.err.println("NewtCanvasAWT.reparentWindow.0: add="+add+", win "+newtWinHandleToHexString(newtChild)+", EDTUtil: cur "+newtChild.getScreen().getDisplay().getEDTUtil());
+      }
 
       newtChild.setFocusAction(null); // no AWT focus traversal ..
       if(add) {
-          jawtWindow = NewtFactoryAWT.getNativeWindow(this, newtChild.getRequestedCapabilities());          
-          jawtWindow.setShallUseOffscreenLayer(shallUseOffscreenLayer);
           if(DEBUG) {
             System.err.println("NewtCanvasAWT.reparentWindow: newtChild: "+newtChild);
           }
+          if(null == jawtWindow) {
+              jawtWindow = NewtFactoryAWT.getNativeWindow(this, newtChild.getRequestedCapabilities());          
+              jawtWindow.setShallUseOffscreenLayer(shallUseOffscreenLayer);
+          }            
           final int w;
           final int h;
           if(isPreferredSizeSet()) {
@@ -407,19 +442,17 @@ public class NewtCanvasAWT extends java.awt.Canvas implements WindowClosingProto
           newtChild.setVisible(true);
           configureNewtChild(true);
           newtChild.sendWindowEvent(WindowEvent.EVENT_WINDOW_RESIZED); // trigger a resize/relayout to listener
-          newtChild.windowRepaint(0, 0, w, h);
           
           // force this AWT Canvas to be focus-able, 
           // since this it is completely covered by the newtChild (z-order).
           setFocusable(true);        
       } else {
-          configureNewtChild(false);          
+          configureNewtChild(false);
           newtChild.setVisible(false);
           newtChild.reparentWindow(null);
-          if(null != jawtWindow) {
-              NewtFactoryAWT.destroyNativeWindow(jawtWindow);
-              jawtWindow=null;
-          }
+      }
+      if(DEBUG) {
+          System.err.println("NewtCanvasAWT.reparentWindow.X: add="+add+", win "+newtWinHandleToHexString(newtChild)+", EDTUtil: cur "+newtChild.getScreen().getDisplay().getEDTUtil());
       }
     }
 
@@ -563,5 +596,12 @@ public class NewtCanvasAWT extends java.awt.Canvas implements WindowClosingProto
       }
     }
   }
+  
+  static String newtWinHandleToHexString(Window w) {
+      return null != w ? toHexString(w.getWindowHandle()) : "nil";
+  }
+  static String toHexString(long l) {
+      return "0x"+Long.toHexString(l);
+  }
 }
 
diff --git a/src/newt/classes/com/jogamp/newt/event/KeyEvent.java b/src/newt/classes/com/jogamp/newt/event/KeyEvent.java
index 44fcea49c..4db661eeb 100644
--- a/src/newt/classes/com/jogamp/newt/event/KeyEvent.java
+++ b/src/newt/classes/com/jogamp/newt/event/KeyEvent.java
@@ -43,7 +43,7 @@ public class KeyEvent extends InputEvent
      this.keyChar=keyChar;
  }
 
- /** Only valid if delivered via {@link KeyListener#keyPressed(KeyEvent)} */
+ /** Only valid on all platforms at {@link KeyListener#keyTyped(KeyEvent)} */
  public char getKeyChar() {
     return keyChar;
  }
diff --git a/src/newt/classes/com/jogamp/newt/opengl/GLWindow.java b/src/newt/classes/com/jogamp/newt/opengl/GLWindow.java
index f08fbc8fa..0fc1b4e89 100644
--- a/src/newt/classes/com/jogamp/newt/opengl/GLWindow.java
+++ b/src/newt/classes/com/jogamp/newt/opengl/GLWindow.java
@@ -53,6 +53,7 @@ import javax.media.opengl.GLCapabilitiesImmutable;
 import javax.media.opengl.GLContext;
 import javax.media.opengl.GLDrawableFactory;
 import javax.media.opengl.GLEventListener;
+import javax.media.opengl.GLException;
 import javax.media.opengl.GLProfile;
 
 import jogamp.newt.WindowImpl;
@@ -62,6 +63,7 @@ import jogamp.opengl.GLDrawableImpl;
 
 import com.jogamp.common.GlueGenVersion;
 import com.jogamp.common.util.VersionUtil;
+import com.jogamp.common.util.locks.RecursiveLock;
 import com.jogamp.newt.NewtFactory;
 import com.jogamp.newt.Screen;
 import com.jogamp.newt.Window;
@@ -87,13 +89,6 @@ import com.jogamp.opengl.JoglVersion;
  * you can inject {@link javax.media.opengl.GLRunnable} objects
  * via {@link #invoke(boolean, javax.media.opengl.GLRunnable)} to the OpenGL command stream.<br>
  * </p>
- * <p>
- * NOTE: [MT-0] Methods utilizing [volatile] drawable/context are not synchronized.
-         In case any of the methods are called outside of a locked state
-         extra care should be added. Maybe we shall expose locking facilities to the user.
-         However, since the user shall stick to the GLEventListener model while utilizing
-         GLAutoDrawable implementations, she is safe due to the implicit locked state.
- * </p>    
  */
 public class GLWindow extends GLAutoDrawableBase implements GLAutoDrawable, Window, NEWTEventConsumer, FPSCounter {
     private final WindowImpl window;
@@ -102,7 +97,7 @@ public class GLWindow extends GLAutoDrawableBase implements GLAutoDrawable, Wind
      * Constructor. Do not call this directly -- use {@link #create()} instead.
      */
     protected GLWindow(Window window) {
-        super(null, null);
+        super(null, null, false);
         this.window = (WindowImpl) window;
         this.window.setHandleDestroyNotify(false);
         window.addWindowListener(new WindowAdapter() {
@@ -124,6 +119,11 @@ public class GLWindow extends GLAutoDrawableBase implements GLAutoDrawable, Wind
         this.window.setLifecycleHook(new GLLifecycleHook());
     }
 
+    @Override
+    public final Object getUpstreamWidget() {
+        return window;
+    }
+    
     /**
      * Creates a new GLWindow attaching a new Window referencing a
      * new default Screen and default Display with the given GLCapabilities.
@@ -426,23 +426,23 @@ public class GLWindow extends GLAutoDrawableBase implements GLAutoDrawable, Wind
         @Override
         public synchronized void destroyActionInLock() {
             if(Window.DEBUG_IMPLEMENTATION) {
-                String msg = "GLWindow.destroy() "+Thread.currentThread()+", start";
+                String msg = "GLWindow.destroy() "+WindowImpl.getThreadName()+", start";
                 System.err.println(msg);
                 //Exception e1 = new Exception(msg);
                 //e1.printStackTrace();
             }
 
-            defaultDestroyOp();
+            destroyImplInLock();
 
             if(Window.DEBUG_IMPLEMENTATION) {
-                System.err.println("GLWindow.destroy() "+Thread.currentThread()+", fin");
+                System.err.println("GLWindow.destroy() "+WindowImpl.getThreadName()+", fin");
             }
         }
 
         @Override
         public synchronized void resetCounter() {
             if(Window.DEBUG_IMPLEMENTATION) {
-                System.err.println("GLWindow.resetCounter() "+Thread.currentThread());
+                System.err.println("GLWindow.resetCounter() "+WindowImpl.getThreadName());
             }
             GLWindow.this.resetFPSCounter();
         }
@@ -452,7 +452,7 @@ public class GLWindow extends GLAutoDrawableBase implements GLAutoDrawable, Wind
             long t0;
             if(Window.DEBUG_IMPLEMENTATION) {
                 t0 = System.nanoTime();
-                System.err.println("GLWindow.setVisibleActionPost("+visible+", "+nativeWindowCreated+") "+Thread.currentThread()+", start");
+                System.err.println("GLWindow.setVisibleActionPost("+visible+", "+nativeWindowCreated+") "+WindowImpl.getThreadName()+", start");
             } else {
                 t0 = 0;
             }
@@ -479,7 +479,7 @@ public class GLWindow extends GLAutoDrawableBase implements GLAutoDrawable, Wind
                 context.setContextCreationFlags(additionalCtxCreationFlags);
             }
             if(Window.DEBUG_IMPLEMENTATION) {
-                System.err.println("GLWindow.setVisibleActionPost("+visible+", "+nativeWindowCreated+") "+Thread.currentThread()+", fin: dt "+ (System.nanoTime()-t0)/1e6 +"ms");
+                System.err.println("GLWindow.setVisibleActionPost("+visible+", "+nativeWindowCreated+") "+WindowImpl.getThreadName()+", fin: dt "+ (System.nanoTime()-t0)/1e6 +"ms");
             }
         }
 
@@ -509,6 +509,11 @@ public class GLWindow extends GLAutoDrawableBase implements GLAutoDrawable, Wind
 
     private GLContext sharedContext = null;
 
+    @Override
+    protected final RecursiveLock getLock() {
+        return window.getLock();
+    }
+    
     /**
      * Specifies an {@link javax.media.opengl.GLContext OpenGL context} to share with.<br>
      * At native creation, {@link #setVisible(boolean) setVisible(true)},
@@ -531,19 +536,18 @@ public class GLWindow extends GLAutoDrawableBase implements GLAutoDrawable, Wind
             return;
         }
 
-        window.lockWindow(); // sync: context/drawable could have been recreated/destroyed while animating
+        final RecursiveLock lock = window.getLock();
+        lock.lock(); // sync: context/drawable could have been recreated/destroyed while animating
         try {
-            if( null == context && 0<getWidth()*getHeight() ) {
-                // retry drawable and context creation
-                setVisible(true);
-            }
-
             if( null != context ) {
                 // surface is locked/unlocked implicit by context's makeCurrent/release
                 helper.invokeGL(drawable, context, defaultDisplayAction, defaultInitAction);
+            } else if( 0<getWidth()*getHeight() ) {
+                // retry drawable and context creation, will itself issue resize -> display
+                setVisible(true);
             }
         } finally {
-            window.unlockWindow();
+            lock.unlock();
         }
     }
 
@@ -553,7 +557,7 @@ public class GLWindow extends GLAutoDrawableBase implements GLAutoDrawable, Wind
     private GLDrawableFactory factory;
 
     @Override
-    public GLDrawableFactory getFactory() {
+    public final GLDrawableFactory getFactory() {
         return factory;
     }
 
@@ -561,6 +565,11 @@ public class GLWindow extends GLAutoDrawableBase implements GLAutoDrawable, Wind
     public final void setRealized(boolean realized) {
     }
 
+    @Override
+    public final void swapBuffers() throws GLException {
+         defaultSwapBuffers();
+    }
+    
     //----------------------------------------------------------------------
     // NEWTEventConsumer
     //
@@ -762,7 +771,7 @@ public class GLWindow extends GLAutoDrawableBase implements GLAutoDrawable, Wind
         System.err.println(GlueGenVersion.getInstance());
         System.err.println(JoglVersion.getInstance());
 
-        System.err.println(JoglVersion.getDefaultOpenGLInfo(null, true).toString());
+        System.err.println(JoglVersion.getDefaultOpenGLInfo(null, null, true).toString());
 
         final GLProfile glp = GLProfile.getDefault();
         final GLCapabilitiesImmutable caps = new GLCapabilities( glp );
diff --git a/src/newt/classes/com/jogamp/newt/swt/NewtCanvasSWT.java b/src/newt/classes/com/jogamp/newt/swt/NewtCanvasSWT.java
new file mode 100644
index 000000000..f45b864fa
--- /dev/null
+++ b/src/newt/classes/com/jogamp/newt/swt/NewtCanvasSWT.java
@@ -0,0 +1,508 @@
+/**
+ * Copyright 2012 JogAmp Community. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modification, are
+ * permitted provided that the following conditions are met:
+ * 
+ *    1. Redistributions of source code must retain the above copyright notice, this list of
+ *       conditions and the following disclaimer.
+ * 
+ *    2. Redistributions 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.
+ * 
+ * THIS SOFTWARE IS PROVIDED BY JogAmp Community ``AS IS'' AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+ * FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL JogAmp Community OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ * 
+ * The views and conclusions contained in the software and documentation are those of the
+ * authors and should not be interpreted as representing official policies, either expressed
+ * or implied, of JogAmp Community.
+ */
+
+
+package com.jogamp.newt.swt;
+
+import javax.media.nativewindow.AbstractGraphicsConfiguration;
+import javax.media.nativewindow.AbstractGraphicsDevice;
+import javax.media.nativewindow.AbstractGraphicsScreen;
+import javax.media.nativewindow.Capabilities;
+import javax.media.nativewindow.CapabilitiesImmutable;
+import javax.media.nativewindow.GraphicsConfigurationFactory;
+import javax.media.nativewindow.NativeSurface;
+import javax.media.nativewindow.NativeWindow;
+import javax.media.nativewindow.NativeWindowException;
+import javax.media.nativewindow.NativeWindowFactory;
+import javax.media.nativewindow.SurfaceUpdatedListener;
+import javax.media.nativewindow.WindowClosingProtocol;
+import javax.media.nativewindow.util.Insets;
+import javax.media.nativewindow.util.InsetsImmutable;
+import javax.media.nativewindow.util.Point;
+
+import jogamp.nativewindow.macosx.OSXUtil;
+import jogamp.newt.Debug;
+
+import org.eclipse.swt.SWT;
+import org.eclipse.swt.events.ControlAdapter;
+import org.eclipse.swt.events.ControlEvent;
+import org.eclipse.swt.events.PaintEvent;
+import org.eclipse.swt.events.PaintListener;
+import org.eclipse.swt.graphics.Rectangle;
+import org.eclipse.swt.widgets.Canvas;
+import org.eclipse.swt.widgets.Composite;
+
+import com.jogamp.nativewindow.swt.SWTAccessor;
+import com.jogamp.newt.Display;
+import com.jogamp.newt.Window;
+import com.jogamp.newt.event.WindowEvent;
+import com.jogamp.newt.util.EDTUtil;
+
+public class NewtCanvasSWT extends Canvas implements WindowClosingProtocol {
+    private static final boolean DEBUG = Debug.debug("Window");
+    private static final boolean isOSX = NativeWindowFactory.TYPE_MACOSX == NativeWindowFactory.getNativeWindowType(false);
+    
+    /** SWT EDTUtil associated w/ parent's SWT Display */
+    private final EDTUtil swtEDTUtil;
+    
+    private final AbstractGraphicsScreen screen;     
+    
+    private WindowClosingMode newtChildCloseOp = WindowClosingMode.DISPOSE_ON_CLOSE;
+    private volatile Rectangle clientArea;
+
+    private volatile SWTNativeWindow nativeWindow;
+    private volatile Window newtChild = null;
+
+    /** 
+     * Creates an instance using {@link #NewtCanvasSWT(Composite, int, Window)} 
+     * on the SWT thread.
+     * 
+     * <p>
+     * Note: The NEWT child {@link Display}'s {@link EDTUtil} is being set to an SWT conform implementation
+     *       via {@link Display#setEDTUtil(EDTUtil)}. 
+     * </p>
+     * 
+     * @param parent the SWT composite
+     * @param style additional styles to SWT#NO_BACKGROUND 
+     * @param child optional preassigned {@link #Window}, maybe null 
+     * @return a new instance
+     */
+    public static NewtCanvasSWT create(final Composite parent, final int style, final Window child) {
+        final NewtCanvasSWT[] res = new NewtCanvasSWT[] { null }; 
+        parent.getDisplay().syncExec( new Runnable() {
+           public void run() {
+               res[0] = new NewtCanvasSWT( parent, style, child);
+           }
+        });
+        return res[0];
+    }
+    
+    /**
+     * Instantiates a NewtCanvas with a NEWT child.
+     * 
+     * <p>
+     * Note: The NEWT child {@link Display}'s {@link EDTUtil} is being set to an SWT conform implementation
+     *       via {@link Display#setEDTUtil(EDTUtil)}. 
+     * </p>
+     * 
+     * @param parent the SWT composite
+     * @param style additional styles to SWT#NO_BACKGROUND 
+     * @param child optional preassigned {@link #Window}, maybe null 
+     */
+    public NewtCanvasSWT(final Composite parent, final int style, Window child) {
+        super(parent, style | SWT.NO_BACKGROUND);
+        
+        swtEDTUtil = new SWTEDTUtil(parent.getDisplay());
+
+        SWTAccessor.setRealized(this, true);
+
+        clientArea = getClientArea();
+
+        final AbstractGraphicsDevice device = SWTAccessor.getDevice(this);
+        screen = SWTAccessor.getScreen(device, 0);
+        nativeWindow = null;
+        
+        if(null != child) {
+            setNEWTChild(child);
+        }
+        
+        /* Register SWT listeners (e.g. PaintListener) to render/resize GL surface. */
+        /* TODO: verify that these do not need to be manually de-registered when destroying the SWT component */
+        addPaintListener(new PaintListener() {
+            @Override
+            public void paintControl(final PaintEvent arg0) {
+                if( null != nativeWindow || validateNative() ) {
+                    if( null !=newtChild ) {
+                        newtChild.windowRepaint(0, 0, clientArea.width, clientArea.height);
+                    }
+                }
+            }
+        });
+
+        addControlListener(new ControlAdapter() {
+            @Override
+            public void controlResized(final ControlEvent arg0) {
+                updateSizeCheck();
+            }
+        });
+    }
+    
+    /** assumes nativeWindow == null ! */
+    protected final boolean validateNative() {
+        if( isDisposed() ) {
+            return false;
+        }
+        updateSizeCheck();
+        final Rectangle nClientArea = clientArea;
+        if(0 == nClientArea.width * nClientArea.height) {
+            return false;
+        }
+        
+        /* Native handle for the control, used to associate with GLContext */
+        final long nativeWindowHandle = SWTAccessor.getWindowHandle(this);
+        final int visualID = SWTAccessor.getNativeVisualID(screen.getDevice(), nativeWindowHandle);
+        final boolean visualIDValid = NativeWindowFactory.isNativeVisualIDValidForProcessing(visualID);
+        if(DEBUG) {
+            System.err.println("NewtCanvasSWT.validateNative() windowHandle 0x"+Long.toHexString(nativeWindowHandle)+", visualID 0x"+Integer.toHexString(visualID)+", valid "+visualIDValid);
+        }        
+        if( visualIDValid ) {
+            /* Get the nativewindow-Graphics Device associated with this control (which is determined by the parent Composite). 
+             * Note: SWT is owner of the native handle, hence no closing operation will be a NOP. */
+            final CapabilitiesImmutable caps = new Capabilities();
+            final GraphicsConfigurationFactory factory = GraphicsConfigurationFactory.getFactory(screen.getDevice(), caps);
+            final AbstractGraphicsConfiguration config = factory.chooseGraphicsConfiguration( caps, caps, null, screen, visualID );
+            if(DEBUG) {
+                System.err.println("NewtCanvasSWT.validateNative() factory: "+factory+", windowHandle 0x"+Long.toHexString(nativeWindowHandle)+", visualID 0x"+Integer.toHexString(visualID)+", chosen config: "+config);
+                // Thread.dumpStack();
+            }        
+            if (null == config) {
+                throw new NativeWindowException("Error choosing GraphicsConfiguration creating window: "+this);
+            }
+
+            nativeWindow = new SWTNativeWindow(config, nativeWindowHandle);
+            reparentWindow( true );
+        }
+
+        return null != nativeWindow;
+    }
+    
+    protected final void updateSizeCheck() {
+        final Rectangle oClientArea = clientArea;
+        final Rectangle nClientArea = getClientArea();
+        if ( nClientArea != null && 
+             ( nClientArea.width != oClientArea.width || nClientArea.height != oClientArea.height )
+           ) {
+            clientArea = nClientArea; // write back new value
+            if( null != newtChild ) {
+                newtChild.setSize(clientArea.width, clientArea.height);
+            }
+        }
+    }
+
+    @Override
+    public void update() {
+        // don't paint background etc .. nop avoids flickering
+    }
+    
+    /**
+     * Destroys this resource:
+     * <ul>
+     *   <li> Make the NEWT Child invisible </li>
+     *   <li> Disconnects the NEWT Child from this Canvas NativeWindow, reparent to NULL </li>
+     *   <li> Issues <code>destroy()</code> on the NEWT Child</li>
+     *   <li> Remove reference to the NEWT Child</li>
+     * </ul>
+     * @see Window#destroy()
+     */
+    @Override
+    public void dispose() {
+        if( null != newtChild ) {
+            if(DEBUG) {
+                System.err.println("NewtCanvasSWT.dispose.0: EDTUtil cur "+newtChild.getScreen().getDisplay().getEDTUtil()+
+                                   ",\n\t"+newtChild);
+            }
+            configureNewtChild(false);
+            newtChild.setVisible(false);
+            newtChild.reparentWindow(null);
+            newtChild.destroy();
+            newtChild = null;
+        }
+        nativeWindow = null;
+        super.dispose();            
+    }
+    
+    /** @return this SWT Canvas NativeWindow representation, may be null in case it has not been realized. */
+    public NativeWindow getNativeWindow() { return nativeWindow; }
+    
+    public WindowClosingMode getDefaultCloseOperation() {
+        return newtChildCloseOp; // FIXME
+    }
+
+    public WindowClosingMode setDefaultCloseOperation(WindowClosingMode op) {
+        return newtChildCloseOp = op; // FIXME
+    }
+
+
+    boolean isParent() {
+        return null!=newtChild ;        
+    }
+
+    boolean isFullscreen() {
+        return null != newtChild && newtChild.isFullscreen();
+    }
+
+    /** 
+     * Sets a new NEWT child, provoking reparenting.
+     * <p>
+     * A previously detached <code>newChild</code> will be released to top-level status
+     * and made invisible. 
+     * </p>
+     * <p>
+     * Note: When switching NEWT child's, detaching the previous first via <code>setNEWTChild(null)</code> 
+     * produced much cleaner visual results. 
+     * </p>
+     * <p>
+     * Note: The NEWT child {@link Display}'s {@link EDTUtil} is being set to an SWT conform implementation
+     *       via {@link Display#setEDTUtil(EDTUtil)}. 
+     * </p>
+     * @return the previous attached newt child.  
+     */
+    public Window setNEWTChild(final Window newChild) {
+        final Window prevChild = newtChild;
+        if(DEBUG) {
+            System.err.println("NewtCanvasSWT.setNEWTChild.0: win "+newtWinHandleToHexString(prevChild)+" -> "+newtWinHandleToHexString(newChild));
+        }
+        // remove old one
+        if(null != newtChild) {
+            reparentWindow( false );
+            newtChild = null;
+        }
+        // add new one, reparent only if ready
+        newtChild = newChild;
+        if(null != nativeWindow && null != newChild) {
+            reparentWindow( true );
+        }
+        return prevChild;        
+    }
+    
+    /** @return the current NEWT child */
+    public Window getNEWTChild() {
+        return newtChild;
+    }
+    
+    @Override
+    public boolean setParent(Composite parent) {
+        return super.setParent(parent);
+    }
+
+    /* package */ void configureNewtChild(boolean attach) {
+
+        if( null != newtChild ) {
+            newtChild.setKeyboardFocusHandler(null);
+            if(attach) {            
+                newtChildCloseOp = newtChild.setDefaultCloseOperation(WindowClosingMode.DO_NOTHING_ON_CLOSE);                
+            } else {
+                newtChild.setFocusAction(null);
+                newtChild.setDefaultCloseOperation(newtChildCloseOp);                
+            }
+        }
+    }
+
+    void reparentWindow(boolean add) {
+        if( null == newtChild ) {
+            return; // nop
+        }
+        if(DEBUG) {
+            System.err.println("NewtCanvasSWT.reparentWindow.0: add="+add+", win "+newtWinHandleToHexString(newtChild)+", EDTUtil: cur "+newtChild.getScreen().getDisplay().getEDTUtil());
+        }
+        
+        newtChild.setFocusAction(null); // no AWT focus traversal ..
+        if(add) {
+            updateSizeCheck();
+            final int w = clientArea.width;
+            final int h = clientArea.height;
+            
+            newtChild.getScreen().getDisplay().setEDTUtil(swtEDTUtil);
+            
+            newtChild.setSize(w, h);
+            newtChild.reparentWindow(nativeWindow);
+            newtChild.setVisible(true);
+            configureNewtChild(true);
+            newtChild.sendWindowEvent(WindowEvent.EVENT_WINDOW_RESIZED); // trigger a resize/relayout to listener
+
+            // force this SWT Canvas to be focus-able, 
+            // since this it is completely covered by the newtChild (z-order).
+            setEnabled(true);
+        } else {
+            configureNewtChild(false);
+            newtChild.setVisible(false);
+            newtChild.reparentWindow(null);
+        }
+        if(DEBUG) {
+            System.err.println("NewtCanvasSWT.reparentWindow.X: add="+add+", win "+newtWinHandleToHexString(newtChild)+", EDTUtil: cur "+newtChild.getScreen().getDisplay().getEDTUtil());
+        }
+    }
+
+    private final void requestFocusNEWTChild() {
+        if( null != newtChild ) {
+            newtChild.setFocusAction(null);
+            newtChild.requestFocus();
+        }
+    }
+    
+    @Override
+    public boolean forceFocus() {
+        final boolean res = NewtCanvasSWT.super.forceFocus();
+        requestFocusNEWTChild();
+        return res;        
+    }
+        
+    private class SWTNativeWindow implements NativeWindow {
+        private final AbstractGraphicsConfiguration config;
+        private final long nativeWindowHandle;
+        private final InsetsImmutable insets; // only required to allow proper client position calculation on OSX
+        
+        public SWTNativeWindow(AbstractGraphicsConfiguration config, long nativeWindowHandle) {
+            this.config = config;
+            this.nativeWindowHandle = nativeWindowHandle;
+            if(isOSX) {
+                this.insets = OSXUtil.GetInsets(nativeWindowHandle);
+            } else {
+                this.insets = new Insets(0, 0, 0, 0);
+            }
+        }
+        
+        @Override
+        public int lockSurface() throws NativeWindowException, RuntimeException {
+            return NativeSurface.LOCK_SUCCESS;
+        }
+
+        @Override
+        public void unlockSurface() { }
+
+        @Override
+        public boolean isSurfaceLockedByOtherThread() {
+            return false;
+        }
+
+        @Override
+        public Thread getSurfaceLockOwner() {
+            return null;
+        }
+
+        @Override
+        public boolean surfaceSwap() {
+            return false;
+        }
+
+        @Override
+        public void addSurfaceUpdatedListener(SurfaceUpdatedListener l) { }
+
+        @Override
+        public void addSurfaceUpdatedListener(int index, SurfaceUpdatedListener l) throws IndexOutOfBoundsException {
+        }
+
+        @Override
+        public void removeSurfaceUpdatedListener(SurfaceUpdatedListener l) { }
+
+        @Override
+        public long getSurfaceHandle() {            
+            return 0;
+        }
+
+        @Override
+        public int getWidth() {
+            return clientArea.width;
+        }
+
+        @Override
+        public int getHeight() {
+            return clientArea.height;
+        }
+
+        @Override
+        public AbstractGraphicsConfiguration getGraphicsConfiguration() {
+            return config;
+        }
+
+        @Override
+        public long getDisplayHandle() {
+            return config.getScreen().getDevice().getHandle();
+        }
+
+        @Override
+        public int getScreenIndex() {
+            return config.getScreen().getIndex();
+        }
+
+        @Override
+        public void surfaceUpdated(Object updater, NativeSurface ns, long when) { }            
+
+        @Override
+        public void destroy() { }
+
+        @Override
+        public NativeWindow getParent() {
+            return null;
+        }
+
+        @Override
+        public long getWindowHandle() {
+            return nativeWindowHandle;
+        }
+
+        @Override
+        public InsetsImmutable getInsets() {
+            return insets;
+        }
+
+        @Override
+        public int getX() {
+            return 0;
+        }
+
+        @Override
+        public int getY() {
+            return 0;
+        }
+
+        @Override
+        public Point getLocationOnScreen(Point point) {
+            if( isOSX ) {
+                final Point los = OSXUtil.GetLocationOnScreen(nativeWindowHandle, false, 0, 0);
+                // top-level position -> client window position
+                los.setX(los.getX() + insets.getLeftWidth());
+                los.setY(los.getY() + insets.getTopHeight());                
+                if(null!=point) {
+                  return point.translate(los);
+                } else {
+                  return los;
+                }
+            } else {
+                // client position on 'normal' windowing systems is 0/0
+                if(null == point) {
+                    point = new Point(0, 0);                    
+                }
+                return point;
+            }
+        }
+
+        @Override
+        public boolean hasFocus() {
+            return isFocusControl();
+        }        
+    };
+
+    static String newtWinHandleToHexString(Window w) {
+        return null != w ? toHexString(w.getWindowHandle()) : "nil";
+    }
+    static String toHexString(long l) {
+        return "0x"+Long.toHexString(l);
+    }
+}
+
diff --git a/src/newt/classes/com/jogamp/newt/swt/SWTEDTUtil.java b/src/newt/classes/com/jogamp/newt/swt/SWTEDTUtil.java
new file mode 100644
index 000000000..3538caad2
--- /dev/null
+++ b/src/newt/classes/com/jogamp/newt/swt/SWTEDTUtil.java
@@ -0,0 +1,99 @@
+/**
+ * Copyright 2012 JogAmp Community. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modification, are
+ * permitted provided that the following conditions are met:
+ *
+ *    1. Redistributions of source code must retain the above copyright notice, this list of
+ *       conditions and the following disclaimer.
+ *
+ *    2. Redistributions 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.
+ *
+ * THIS SOFTWARE IS PROVIDED BY JogAmp Community ``AS IS'' AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+ * FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL JogAmp Community OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * The views and conclusions contained in the software and documentation are those of the
+ * authors and should not be interpreted as representing official policies, either expressed
+ * or implied, of JogAmp Community.
+ */
+package com.jogamp.newt.swt;
+
+import org.eclipse.swt.widgets.Display;
+
+import com.jogamp.newt.util.EDTUtil;
+
+/**
+ * Simple {@link EDTUtil} implementation utilizing the SWT UI thread
+ * of the given {@link Display}.
+ */
+public class SWTEDTUtil implements EDTUtil {
+    private final Display swtDisplay;
+    
+    public SWTEDTUtil(Display swtDisplay) {
+        this.swtDisplay = swtDisplay;
+    }
+    
+    public final Display getDisplay() {
+        return swtDisplay;
+    }
+    
+    @Override
+    public long getPollPeriod() {
+        return 0;
+    }
+
+    @Override
+    public void setPollPeriod(long ms) {
+    }
+
+    @Override
+    public void reset() {
+    }
+
+    @Override
+    public void start() {
+    }
+
+    @Override
+    public boolean isCurrentThreadEDT() {
+        return swtDisplay.getThread() == Thread.currentThread();
+    }
+
+    @Override
+    public boolean isRunning() {
+        return true;
+    }
+
+    @Override
+    public void invokeStop(Runnable finalTask) {
+        swtDisplay.syncExec(finalTask);
+    }
+
+    @Override
+    public void invoke(boolean wait, Runnable task) {
+        if(wait) {
+            swtDisplay.syncExec(task);
+        } else {
+            swtDisplay.asyncExec(task);
+        }
+    }
+
+    @Override
+    public void waitUntilIdle() {
+        // all sync ..
+    }
+
+    @Override
+    public void waitUntilStopped() {
+        // all sync ..
+    }
+}
diff --git a/src/newt/classes/jogamp/newt/DefaultEDTUtil.java b/src/newt/classes/jogamp/newt/DefaultEDTUtil.java
index fd757fba6..bdbe96070 100644
--- a/src/newt/classes/jogamp/newt/DefaultEDTUtil.java
+++ b/src/newt/classes/jogamp/newt/DefaultEDTUtil.java
@@ -340,7 +340,7 @@ public class DefaultEDTUtil implements EDTUtil {
                     }
                 }
                 if(DEBUG) {
-                    System.err.println(getName()+": EDT run() EXIT "+ getName()+", "+error);
+                    System.err.println(getName()+": EDT run() EXIT "+ getName()+", exception: "+error);
                 }
                 if(null!=error) {
                     throw error;
diff --git a/src/newt/classes/jogamp/newt/DisplayImpl.java b/src/newt/classes/jogamp/newt/DisplayImpl.java
index a0bbcc264..b178bb5d3 100644
--- a/src/newt/classes/jogamp/newt/DisplayImpl.java
+++ b/src/newt/classes/jogamp/newt/DisplayImpl.java
@@ -101,7 +101,9 @@ public abstract class DisplayImpl extends Display {
                 display.hashCode = display.fqname.hashCode();
                 displayList.add(display);
             }
-            display.createEDTUtil();
+            if(null == display.edtUtil) {
+                display.setEDTUtil(null); // device's default if EDT is used, or null        
+            }
             if(DEBUG) {
                 System.err.println("Display.create() NEW: "+display+" "+getThreadName());
             }
@@ -168,15 +170,45 @@ public abstract class DisplayImpl extends Display {
         return true; 
     }
 
-    protected void createEDTUtil() {
+    protected EDTUtil createEDTUtil() {
+        final EDTUtil def;
         if(NewtFactory.useEDT()) {
-            edtUtil = new DefaultEDTUtil(Thread.currentThread().getThreadGroup(), "Display-"+getFQName(), dispatchMessagesRunnable);            
+            def = new DefaultEDTUtil(Thread.currentThread().getThreadGroup(), "Display-"+getFQName(), dispatchMessagesRunnable);            
             if(DEBUG) {
-                System.err.println("Display.createNative("+getFQName()+") Create EDTUtil: "+edtUtil.getClass().getName());
+                System.err.println("Display.createNative("+getFQName()+") Create EDTUtil: "+def.getClass().getName());
             }
+        } else {
+            def = null;
         }
+        return def;
     }
 
+    @Override
+    public EDTUtil setEDTUtil(EDTUtil newEDTUtil) {        
+        if(null == newEDTUtil) {
+            newEDTUtil = createEDTUtil();
+        }
+        if( newEDTUtil == edtUtil ) {
+            if(DEBUG) {
+                System.err.println("Display.setEDTUtil: "+newEDTUtil+" - keep!");
+            }
+            return null; // no change
+        }
+        final EDTUtil oldEDTUtil = edtUtil;
+        if(DEBUG) {
+            System.err.println("Display.setEDTUtil: "+oldEDTUtil+" -> "+newEDTUtil);
+        }
+        if(null != oldEDTUtil) {
+            stopEDT( new Runnable() { public void run() {} } );
+            // ready for restart ..
+            oldEDTUtil.waitUntilStopped();
+            oldEDTUtil.reset();
+        }
+        edtUtil = newEDTUtil;
+        return oldEDTUtil;
+    }
+
+    @Override
     public final EDTUtil getEDTUtil() {
         return edtUtil;
     }
@@ -355,24 +387,39 @@ public abstract class DisplayImpl extends Display {
     DispatchMessagesRunnable dispatchMessagesRunnable = new DispatchMessagesRunnable();
 
     final void dispatchMessage(final NEWTEventTask eventTask) {
-        NEWTEvent event = eventTask.get();
-        if(null == event) {
-            // Ooops ?
-            System.err.println("Warning: event of eventTask is NULL");
-            Thread.dumpStack();
-            return;
-        }
-        Object source = event.getSource();
-        if(source instanceof NEWTEventConsumer) {
-            NEWTEventConsumer consumer = (NEWTEventConsumer) source ;
-            if(!consumer.consumeEvent(event)) {
-                // enqueue for later execution
-                enqueueEvent(false, event);
+        final NEWTEvent event = eventTask.get();
+        try { 
+            if(null == event) {
+                // Ooops ?
+                System.err.println("Warning: event of eventTask is NULL");
+                Thread.dumpStack();
+                return;
+            }
+            final Object source = event.getSource();        
+            if(source instanceof NEWTEventConsumer) {
+                final NEWTEventConsumer consumer = (NEWTEventConsumer) source ;
+                if(!consumer.consumeEvent(event)) {
+                    // enqueue for later execution
+                    enqueueEvent(false, event);
+                }
+            } else {
+                throw new RuntimeException("Event source not NEWT: "+source.getClass().getName()+", "+source);
+            }
+        } catch (Throwable t) {
+            final RuntimeException re;
+            if(t instanceof RuntimeException) {
+                re = (RuntimeException) t;
+            } else {
+                re = new RuntimeException(t);
+            }
+            if( eventTask.isCallerWaiting() ) {
+                // propagate exception to caller
+                eventTask.setException(re);
+            } else {
+                throw re;
             }
-        } else {
-            throw new RuntimeException("Event source not NEWT: "+source.getClass().getName()+", "+source);
         }
-        eventTask.notifyIssuer();        
+        eventTask.notifyCaller();        
     }
     
     public void dispatchMessages() {
@@ -423,8 +470,8 @@ public abstract class DisplayImpl extends Display {
             return;
         }
         
-        Object lock = new Object();
-        NEWTEventTask eTask = new NEWTEventTask(e, wait?lock:null);
+        final Object lock = new Object();
+        final NEWTEventTask eTask = new NEWTEventTask(e, wait?lock:null);
         synchronized(lock) {
             synchronized(eventsLock) {
                 events.add(eTask);
@@ -437,7 +484,10 @@ public abstract class DisplayImpl extends Display {
                 } catch (InterruptedException ie) {
                     throw new RuntimeException(ie);
                 }
-            }
+                if( null != eTask.getException() ) {
+                    throw eTask.getException();
+                }
+            }            
         }
     }
 
diff --git a/src/newt/classes/jogamp/newt/OffscreenWindow.java b/src/newt/classes/jogamp/newt/OffscreenWindow.java
index 050e24b6c..ba98ca3af 100644
--- a/src/newt/classes/jogamp/newt/OffscreenWindow.java
+++ b/src/newt/classes/jogamp/newt/OffscreenWindow.java
@@ -34,15 +34,25 @@
 
 package jogamp.newt;
 
-import javax.media.nativewindow.*;
+import javax.media.nativewindow.AbstractGraphicsConfiguration;
+import javax.media.nativewindow.AbstractGraphicsScreen;
+import javax.media.nativewindow.GraphicsConfigurationFactory;
+import javax.media.nativewindow.MutableSurface;
+import javax.media.nativewindow.NativeWindowException;
+import javax.media.nativewindow.ProxySurface;
+import javax.media.nativewindow.VisualIDHolder;
 import javax.media.nativewindow.util.Insets;
 import javax.media.nativewindow.util.Point;
 
-public class OffscreenWindow extends WindowImpl implements SurfaceChangeable {
+public class OffscreenWindow extends WindowImpl implements MutableSurface {
 
     long surfaceHandle = 0;
-
+    ProxySurface.UpstreamSurfaceHook upstreamHook;
+    ProxySurface dummySurface;
+    
     public OffscreenWindow() {
+        upstreamHook = null;
+        dummySurface = null;
     }
 
     static long nextWindowHandle = 0x100; // start here - a marker
@@ -52,8 +62,19 @@ public class OffscreenWindow extends WindowImpl implements SurfaceChangeable {
             throw new NativeWindowException("Capabilities is onscreen");
         }
         final AbstractGraphicsScreen aScreen = getScreen().getGraphicsScreen();
-        final AbstractGraphicsConfiguration cfg = GraphicsConfigurationFactory.getFactory(aScreen.getDevice()).chooseGraphicsConfiguration(
-                                                         capsRequested, capsRequested, capabilitiesChooser, aScreen);
+        /** Cannot use OpenGL here ..
+        if(capsRequested instanceof GLCapabilitiesImmutable) {
+            final GLCapabilitiesImmutable caps = (GLCapabilitiesImmutable) capsRequested;
+            if(caps.isFBO() && GLContext.isFBOAvailable(aScreen.getDevice(), caps.getGLProfile()) ) {
+                final GLDrawableFactoryImpl factory = (GLDrawableFactoryImpl) GLDrawableFactory.getFactory(caps.getGLProfile());
+                final GLCapabilitiesImmutable dummyCaps = GLGraphicsConfigurationUtil.fixOnscreenGLCapabilities(caps);
+                final ProxySurface dummySurface = factory.createDummySurfaceImpl(aScreen.getDevice(), false, dummyCaps, null, 64, 64);
+                upstreamHook = dummySurface.getUpstreamSurfaceHook();
+                dummySurface.createNotify();
+            }
+        } */
+        final AbstractGraphicsConfiguration cfg = GraphicsConfigurationFactory.getFactory(aScreen.getDevice(), capsRequested).chooseGraphicsConfiguration(
+                                                         capsRequested, capsRequested, capabilitiesChooser, aScreen, VisualIDHolder.VID_UNDEFINED);
         if (null == cfg) {
             throw new NativeWindowException("Error choosing GraphicsConfiguration creating window: "+this);
         }
@@ -68,13 +89,14 @@ public class OffscreenWindow extends WindowImpl implements SurfaceChangeable {
         // nop
     }
 
-    public void surfaceSizeChanged(int width, int height) {
-         sizeChanged(false, width, height, false);
-    }
-    
     @Override
     public synchronized void destroy() {
         super.destroy();
+        if(null != dummySurface) {
+            dummySurface.destroyNotify();
+            dummySurface = null;
+            upstreamHook = null;
+        }
         surfaceHandle = 0;
     }
 
@@ -84,8 +106,12 @@ public class OffscreenWindow extends WindowImpl implements SurfaceChangeable {
 
     @Override
     public long getSurfaceHandle() {
+        if(null != dummySurface) {
+            return dummySurface.getSurfaceHandle();
+            // return upstreamHook.getWidth();
+        }
         return surfaceHandle;
-    }
+    }        
 
     protected void requestFocusImpl(boolean reparented) {
     }
diff --git a/src/newt/classes/jogamp/newt/WindowImpl.java b/src/newt/classes/jogamp/newt/WindowImpl.java
index e49f91abd..606101ade 100644
--- a/src/newt/classes/jogamp/newt/WindowImpl.java
+++ b/src/newt/classes/jogamp/newt/WindowImpl.java
@@ -445,9 +445,14 @@ public abstract class WindowImpl implements Window, NEWTEventConsumer
     protected abstract void closeNativeImpl();
 
     /** 
-     * The native implementation must invoke {@link #focusChanged(boolean, boolean)}
-     * to change the focus state, if <code>force == false</code>. 
-     * This may happen asynchronous within {@link #TIMEOUT_NATIVEWINDOW}.
+     * Async request which shall be performed within {@link #TIMEOUT_NATIVEWINDOW}.
+     * <p>
+     * If if <code>force == false</code> the native implementation 
+     * may only request focus if not yet owner.</p>
+     * <p>
+     * {@link #focusChanged(boolean, boolean)} should be called
+     * to notify about the focus traversal. 
+     * </p> 
      * 
      * @param force if true, bypass {@link #focusChanged(boolean, boolean)} and force focus request
      */
@@ -564,9 +569,11 @@ public abstract class WindowImpl implements Window, NEWTEventConsumer
 
     @Override
     public final int lockSurface() throws NativeWindowException, RuntimeException {
-        windowLock.lock();
-        surfaceLock.lock();
-        int res = surfaceLock.getHoldCount() == 1 ? LOCK_SURFACE_NOT_READY : LOCK_SUCCESS; // new lock ?
+        final RecursiveLock _wlock = windowLock;
+        final RecursiveLock _slock = surfaceLock;
+        _wlock.lock();
+        _slock.lock();
+        int res = _slock.getHoldCount() == 1 ? LOCK_SURFACE_NOT_READY : LOCK_SUCCESS; // new lock ?
 
         if ( LOCK_SURFACE_NOT_READY == res ) {
             try {
@@ -583,8 +590,8 @@ public abstract class WindowImpl implements Window, NEWTEventConsumer
                 }
             } finally {
                 if (LOCK_SURFACE_NOT_READY >= res) {
-                    surfaceLock.unlock();
-                    windowLock.unlock();
+                    _slock.unlock();
+                    _wlock.unlock();
                 }
             }
         }
@@ -593,10 +600,12 @@ public abstract class WindowImpl implements Window, NEWTEventConsumer
 
     @Override
     public final void unlockSurface() {
-        surfaceLock.validateLocked();
-        windowLock.validateLocked();
+        final RecursiveLock _slock = surfaceLock;
+        final RecursiveLock _wlock = windowLock;
+        _slock.validateLocked();
+        _wlock.validateLocked();
 
-        if (surfaceLock.getHoldCount() == 1) {
+        if (_slock.getHoldCount() == 1) {
             final AbstractGraphicsDevice adevice = getGraphicsConfiguration().getScreen().getDevice();
             try {
                 unlockSurfaceImpl();
@@ -604,8 +613,8 @@ public abstract class WindowImpl implements Window, NEWTEventConsumer
                 adevice.unlock();
             }
         }
-        surfaceLock.unlock();
-        windowLock.unlock();
+        _slock.unlock();
+        _wlock.unlock();
     }
 
     @Override
@@ -618,21 +627,10 @@ public abstract class WindowImpl implements Window, NEWTEventConsumer
         return surfaceLock.getOwner();
     }
 
-    public final void lockWindow() {
-        windowLock.lock();        
-    }
-    public final void unlockWindow() {
-        windowLock.unlock();
+    public final RecursiveLock getLock() {
+        return windowLock;
     }
     
-    public final boolean isWindowLockedByOtherThread() {
-        return windowLock.isLockedByOtherThread();
-    }
-
-    public final Thread getWindowLockOwner() {
-        return windowLock.getOwner();
-    }
-
     public long getSurfaceHandle() {
         return windowHandle; // default: return window handle
     }
@@ -670,11 +668,12 @@ public abstract class WindowImpl implements Window, NEWTEventConsumer
     public Point getLocationOnScreen(Point storage) {
         if(isNativeValid()) {
             Point d;
-            windowLock.lock();
+            final RecursiveLock _lock = windowLock;
+            _lock.lock();
             try {
                 d = getLocationOnScreenImpl(0, 0);
             } finally {
-                windowLock.unlock();
+                _lock.unlock();
             }
             if(null!=d) {
                 if(null!=storage) {
@@ -717,7 +716,8 @@ public abstract class WindowImpl implements Window, NEWTEventConsumer
         boolean nativeWindowCreated = false;
         boolean madeVisible = false;
         
-        windowLock.lock();
+        final RecursiveLock _lock = windowLock;
+        _lock.lock();
         try {
             if(null!=lifecycleHook) {
                 lifecycleHook.resetCounter();
@@ -739,7 +739,7 @@ public abstract class WindowImpl implements Window, NEWTEventConsumer
                     madeVisible = nativeWindowCreated;
                 }
                 // always flag visible, allowing a retry ..
-                WindowImpl.this.visible = true;                
+                WindowImpl.this.visible = true;      
             } else if(WindowImpl.this.visible != visible) {
                 if(isNativeValid()) {
                     setVisibleImpl(visible, getX(), getY(), getWidth(), getHeight());
@@ -766,7 +766,7 @@ public abstract class WindowImpl implements Window, NEWTEventConsumer
                 System.err.println("Window setVisible: END ("+getThreadName()+") "+getX()+"/"+getY()+" "+getWidth()+"x"+getHeight()+", fs "+fullscreen+", windowHandle "+toHexString(windowHandle)+", visible: "+WindowImpl.this.visible+", nativeWindowCreated: "+nativeWindowCreated+", madeVisible: "+madeVisible);
             }
         } finally {
-            windowLock.unlock();
+            _lock.unlock();
         }
         if( nativeWindowCreated || madeVisible ) {
             sendWindowEvent(WindowEvent.EVENT_WINDOW_RESIZED); // trigger a resize/relayout and repaint to listener
@@ -801,7 +801,8 @@ public abstract class WindowImpl implements Window, NEWTEventConsumer
 
         public final void run() {
             boolean recreate = false;
-            windowLock.lock();
+            final RecursiveLock _lock = windowLock;
+            _lock.lock();
             try {
                 if ( !isFullscreen() && ( getWidth() != width || getHeight() != height ) ) {
                     recreate = isNativeValid() && !getGraphicsConfiguration().getChosenCapabilities().isOnscreen();
@@ -842,7 +843,7 @@ public abstract class WindowImpl implements Window, NEWTEventConsumer
                 if(recreate) {
                     screen.removeReference(); // bring back ref-count
                 }
-                windowLock.unlock();
+                _lock.unlock();
             }
         }
     }
@@ -863,7 +864,8 @@ public abstract class WindowImpl implements Window, NEWTEventConsumer
             if(null!=lifecycleHook) {
                 lifecycleHook.destroyActionPreLock();
             }
-            windowLock.lock();
+            final RecursiveLock _lock = windowLock;
+            _lock.lock();
             try {
                 if(DEBUG_IMPLEMENTATION) {
                     System.err.println("Window DestroyAction() "+getThreadName());
@@ -917,7 +919,7 @@ public abstract class WindowImpl implements Window, NEWTEventConsumer
                 hasFocus = false;
                 parentWindowHandle = 0;
 
-                windowLock.unlock();
+                _lock.unlock();
             }
             if(animatorPaused) {
                 lifecycleHook.resumeRenderingAction();
@@ -1002,8 +1004,9 @@ public abstract class WindowImpl implements Window, NEWTEventConsumer
             int width = getWidth();
             int height = getHeight();
             boolean wasVisible;
-
-            windowLock.lock();
+            
+            final RecursiveLock _lock = windowLock;
+            _lock.lock();
             try {
                 if(isNativeValid()) {
                     // force recreation if offscreen, since it may become onscreen
@@ -1220,7 +1223,7 @@ public abstract class WindowImpl implements Window, NEWTEventConsumer
                     System.err.println("Window.reparentWindow: END-1 ("+getThreadName()+") windowHandle "+toHexString(windowHandle)+", visible: "+visible+", parentWindowHandle "+toHexString(parentWindowHandle)+", parentWindow "+ Display.hashCodeNullSafe(parentWindow)+" "+x+"/"+y+" "+width+"x"+height);
                 }
             } finally {
-                windowLock.unlock();
+                _lock.unlock();
             }
             if(wasVisible) {
                 switch (operation) {
@@ -1245,7 +1248,8 @@ public abstract class WindowImpl implements Window, NEWTEventConsumer
 
     private class ReparentActionRecreate implements Runnable {
         public final void run() {
-            windowLock.lock();
+            final RecursiveLock _lock = windowLock;
+            _lock.lock();
             try {
                 visible = true;
                 if(DEBUG_IMPLEMENTATION) {
@@ -1253,7 +1257,7 @@ public abstract class WindowImpl implements Window, NEWTEventConsumer
                 }
                 setVisible(true); // native creation
             } finally {
-                windowLock.unlock();
+                _lock.unlock();
             }
         }
     }
@@ -1291,7 +1295,8 @@ public abstract class WindowImpl implements Window, NEWTEventConsumer
         }
 
         public final void run() {
-            windowLock.lock();
+            final RecursiveLock _lock = windowLock;
+            _lock.lock();
             try {
                 if(WindowImpl.this.undecorated != undecorated) {
                     // set current state
@@ -1311,7 +1316,7 @@ public abstract class WindowImpl implements Window, NEWTEventConsumer
                     }
                 }
             } finally {
-                windowLock.unlock();
+                _lock.unlock();
             }
             sendWindowEvent(WindowEvent.EVENT_WINDOW_RESIZED); // trigger a resize/relayout and repaint to listener
         }
@@ -1333,7 +1338,8 @@ public abstract class WindowImpl implements Window, NEWTEventConsumer
         }
 
         public final void run() {
-            windowLock.lock();
+            final RecursiveLock _lock = windowLock;
+            _lock.lock();
             try {
                 if(WindowImpl.this.alwaysOnTop != alwaysOnTop) {
                     // set current state
@@ -1353,7 +1359,7 @@ public abstract class WindowImpl implements Window, NEWTEventConsumer
                     }
                 }
             } finally {
-                windowLock.unlock();
+                _lock.unlock();
             }
             sendWindowEvent(WindowEvent.EVENT_WINDOW_RESIZED); // trigger a resize/relayout and repaint to listener
         }
@@ -1545,7 +1551,7 @@ public abstract class WindowImpl implements Window, NEWTEventConsumer
                     "\n, ParentWindow "+parentWindow+
                     "\n, ParentWindowHandle "+toHexString(parentWindowHandle)+" ("+(0!=getParentWindowHandle())+")"+
                     "\n, WindowHandle "+toHexString(getWindowHandle())+
-                    "\n, SurfaceHandle "+toHexString(getSurfaceHandle())+ " (lockedExt window "+isWindowLockedByOtherThread()+", surface "+isSurfaceLockedByOtherThread()+")"+
+                    "\n, SurfaceHandle "+toHexString(getSurfaceHandle())+ " (lockedExt window "+windowLock.isLockedByOtherThread()+", surface "+isSurfaceLockedByOtherThread()+")"+
                     "\n, Pos "+getX()+"/"+getY()+" (auto "+autoPosition()+"), size "+getWidth()+"x"+getHeight()+
                     "\n, Visible "+isVisible()+", focus "+hasFocus()+
                     "\n, Undecorated "+undecorated+" ("+isUndecorated()+")"+
@@ -1675,7 +1681,8 @@ public abstract class WindowImpl implements Window, NEWTEventConsumer
         }
 
         public final void run() {
-            windowLock.lock();
+            final RecursiveLock _lock = windowLock;
+            _lock.lock();
             try {
                 if(DEBUG_IMPLEMENTATION) {
                     System.err.println("Window setPosition: "+getX()+"/"+getY()+" -> "+x+"/"+y+", fs "+fullscreen+", windowHandle "+toHexString(windowHandle));
@@ -1689,7 +1696,7 @@ public abstract class WindowImpl implements Window, NEWTEventConsumer
                     }
                 }
             } finally {
-                windowLock.unlock();
+                _lock.unlock();
             }
         }
     }
@@ -1718,7 +1725,8 @@ public abstract class WindowImpl implements Window, NEWTEventConsumer
         public boolean fsOn() { return fullscreen; }
 
         public final void run() {
-            windowLock.lock();
+            final RecursiveLock _lock = windowLock;
+            _lock.lock();
             try {
                 // set current state
                 WindowImpl.this.fullscreen = fullscreen;
@@ -1795,7 +1803,7 @@ public abstract class WindowImpl implements Window, NEWTEventConsumer
                     }
                 }
             } finally {
-                windowLock.unlock();
+                _lock.unlock();
             }
             sendWindowEvent(WindowEvent.EVENT_WINDOW_RESIZED); // trigger a resize/relayout and repaint to listener
         }
@@ -1805,8 +1813,7 @@ public abstract class WindowImpl implements Window, NEWTEventConsumer
     public boolean setFullscreen(boolean fullscreen) {
         synchronized(fullScreenAction) {
             if( fullScreenAction.init(fullscreen) ) {               
-                if(fullScreenAction.fsOn() && 
-                   isOffscreenInstance(WindowImpl.this, parentWindow)) { 
+                if(fullScreenAction.fsOn() && isOffscreenInstance(WindowImpl.this, parentWindow)) { 
                     // enable fullscreen on offscreen instance
                     if(null != parentWindow) {
                         nfs_parent = parentWindow;
@@ -1918,7 +1925,7 @@ public abstract class WindowImpl implements Window, NEWTEventConsumer
             // special repaint treatment
             case WindowEvent.EVENT_WINDOW_REPAINT:
                 // queue repaint event in case window is locked, ie in operation
-                if( null != getWindowLockOwner() ) {
+                if( null != windowLock.getOwner() ) {
                     // make sure only one repaint event is queued
                     if(!repaintQueued) {
                         repaintQueued=true;
@@ -1937,7 +1944,7 @@ public abstract class WindowImpl implements Window, NEWTEventConsumer
             // common treatment
             case WindowEvent.EVENT_WINDOW_RESIZED:
                 // queue event in case window is locked, ie in operation
-                if( null != getWindowLockOwner() ) {
+                if( null != windowLock.getOwner() ) {
                     final boolean discardTO = QUEUED_EVENT_TO <= System.currentTimeMillis()-e.getWhen();
                     if(DEBUG_IMPLEMENTATION) {
                         System.err.println("Window.consumeEvent: "+Thread.currentThread().getName()+" - queued "+e+", discard-to "+discardTO);
diff --git a/src/newt/classes/jogamp/newt/awt/event/AWTParentWindowAdapter.java b/src/newt/classes/jogamp/newt/awt/event/AWTParentWindowAdapter.java
index ce8ed7c49..747e2368e 100644
--- a/src/newt/classes/jogamp/newt/awt/event/AWTParentWindowAdapter.java
+++ b/src/newt/classes/jogamp/newt/awt/event/AWTParentWindowAdapter.java
@@ -34,6 +34,7 @@ import javax.media.nativewindow.NativeWindow;
 
 import jogamp.newt.driver.DriverUpdatePosition;
 
+import com.jogamp.newt.Window;
 import com.jogamp.newt.event.awt.AWTAdapter;
 import com.jogamp.newt.event.awt.AWTWindowAdapter;
 
@@ -92,19 +93,20 @@ public class AWTParentWindowAdapter
         if(DEBUG_IMPLEMENTATION) {
             System.err.println("AWT: componentResized: "+comp);
         }
-        getNewtWindow().runOnEDTIfAvail(false, new Runnable() {
+        final Window newtWindow = getNewtWindow();
+        newtWindow.runOnEDTIfAvail(false, new Runnable() {
             public void run() {
                 int cw = comp.getWidth();
                 int ch = comp.getHeight();
                 if( 0 < cw * ch ) {
-                    if( getNewtWindow().getWidth() != cw || getNewtWindow().getHeight() != ch ) {
-                        getNewtWindow().setSize(cw, ch);
-                        if(comp.isVisible() != getNewtWindow().isVisible()) {
-                            getNewtWindow().setVisible(comp.isVisible());
+                    if( newtWindow.getWidth() != cw || newtWindow.getHeight() != ch ) {
+                        newtWindow.setSize(cw, ch);
+                        if(comp.isVisible() != newtWindow.isVisible()) {
+                            newtWindow.setVisible(comp.isVisible());
                         }
                     }
-                } else if(getNewtWindow().isVisible()) {
-                    getNewtWindow().setVisible(false);
+                } else if(newtWindow.isVisible()) {
+                    newtWindow.setVisible(false);
                 }
             }});
     }
@@ -113,8 +115,9 @@ public class AWTParentWindowAdapter
         if(DEBUG_IMPLEMENTATION) {
             System.err.println("AWT: componentMoved: "+e);            
         }
-        if(getNewtWindow().getDelegatedWindow() instanceof DriverUpdatePosition) {
-            ((DriverUpdatePosition)getNewtWindow().getDelegatedWindow()).updatePosition();
+        final Window newtWindow = getNewtWindow();
+        if(newtWindow.getDelegatedWindow() instanceof DriverUpdatePosition) {
+            ((DriverUpdatePosition)newtWindow.getDelegatedWindow()).updatePosition();
         }            
     }
 
diff --git a/src/newt/classes/jogamp/newt/driver/android/AndroidDisplay.java b/src/newt/classes/jogamp/newt/driver/android/AndroidDisplay.java
index 3f360f20f..0a43c9b8f 100644
--- a/src/newt/classes/jogamp/newt/driver/android/AndroidDisplay.java
+++ b/src/newt/classes/jogamp/newt/driver/android/AndroidDisplay.java
@@ -32,9 +32,6 @@ import jogamp.newt.*;
 import jogamp.opengl.egl.*;
 
 import javax.media.nativewindow.*;
-import javax.media.opengl.GLException;
-
-import com.jogamp.nativewindow.egl.*;
 
 public class AndroidDisplay extends jogamp.newt.DisplayImpl {
     static {
@@ -55,20 +52,11 @@ public class AndroidDisplay extends jogamp.newt.DisplayImpl {
 
     protected void createNativeImpl() {
         // EGL Device
-        final long eglDisplay = EGLDisplayUtil.eglGetDisplay(EGL.EGL_DEFAULT_DISPLAY);
-        if (eglDisplay == EGL.EGL_NO_DISPLAY) {
-            throw new GLException("Failed to created EGL default display: error 0x"+Integer.toHexString(EGL.eglGetError()));
-        }
-        if (!EGLDisplayUtil.eglInitialize(eglDisplay, null, null)) {
-            throw new GLException("eglInitialize failed eglDisplay 0x"+Long.toHexString(eglDisplay)+", error 0x"+Integer.toHexString(EGL.eglGetError()));
-        }
-        aDevice = new EGLGraphicsDevice(eglDisplay, AbstractGraphicsDevice.DEFAULT_CONNECTION, AbstractGraphicsDevice.DEFAULT_UNIT);        
+        aDevice = EGLDisplayUtil.eglCreateEGLGraphicsDevice(EGL.EGL_DEFAULT_DISPLAY, AbstractGraphicsDevice.DEFAULT_CONNECTION, AbstractGraphicsDevice.DEFAULT_UNIT);
     }
 
     protected void closeNativeImpl() {
-        if (aDevice.getHandle() != EGL.EGL_NO_DISPLAY) {
-            EGLDisplayUtil.eglTerminate(aDevice.getHandle());
-        }
+        aDevice.close();
     }
 
     protected void dispatchMessagesNative() {
diff --git a/src/newt/classes/jogamp/newt/driver/android/MD.java b/src/newt/classes/jogamp/newt/driver/android/MD.java
index 403eae383..f2f30937b 100644
--- a/src/newt/classes/jogamp/newt/driver/android/MD.java
+++ b/src/newt/classes/jogamp/newt/driver/android/MD.java
@@ -43,7 +43,7 @@ public class MD {
               .append(JoglVersion.getInstance()).append(Platform.NEWLINE)
               .append(Platform.NEWLINE);
               
-        JoglVersion.getDefaultOpenGLInfo(sb, true);
+        JoglVersion.getDefaultOpenGLInfo(null, sb, true);
 
         return sb.toString();       
    }
diff --git a/src/newt/classes/jogamp/newt/driver/awt/AWTCanvas.java b/src/newt/classes/jogamp/newt/driver/awt/AWTCanvas.java
index 5a49dd57c..a7950048a 100644
--- a/src/newt/classes/jogamp/newt/driver/awt/AWTCanvas.java
+++ b/src/newt/classes/jogamp/newt/driver/awt/AWTCanvas.java
@@ -46,6 +46,7 @@ import javax.media.nativewindow.CapabilitiesChooser;
 import javax.media.nativewindow.CapabilitiesImmutable;
 import javax.media.nativewindow.GraphicsConfigurationFactory;
 import javax.media.nativewindow.NativeWindowException;
+import javax.media.nativewindow.VisualIDHolder;
 
 
 import com.jogamp.nativewindow.awt.AWTGraphicsConfiguration;
@@ -53,6 +54,7 @@ import com.jogamp.nativewindow.awt.AWTGraphicsDevice;
 import com.jogamp.nativewindow.awt.AWTGraphicsScreen;
 import com.jogamp.newt.Window;
 
+@SuppressWarnings("serial")
 public class AWTCanvas extends Canvas {
   private GraphicsDevice device;
   private GraphicsConfiguration chosen;
@@ -252,9 +254,9 @@ public class AWTCanvas extends Canvas {
             AWTGraphicsScreen.createScreenDevice(device, AbstractGraphicsDevice.DEFAULT_UNIT):
             AWTGraphicsScreen.createDefault();
     AWTGraphicsConfiguration config = (AWTGraphicsConfiguration)
-      GraphicsConfigurationFactory.getFactory(AWTGraphicsDevice.class).chooseGraphicsConfiguration(capsChosen,
+      GraphicsConfigurationFactory.getFactory(AWTGraphicsDevice.class, capsChosen.getClass()).chooseGraphicsConfiguration(capsChosen,
                                                                                                    capsRequested,
-                                                                                                   chooser, aScreen);
+                                                                                                   chooser, aScreen, VisualIDHolder.VID_UNDEFINED);
     if (config == null) {
       throw new NativeWindowException("Error: Couldn't fetch AWTGraphicsConfiguration");
     }
diff --git a/src/newt/classes/jogamp/newt/driver/awt/AWTDisplay.java b/src/newt/classes/jogamp/newt/driver/awt/AWTDisplay.java
index 166da5c1c..65f8b4715 100644
--- a/src/newt/classes/jogamp/newt/driver/awt/AWTDisplay.java
+++ b/src/newt/classes/jogamp/newt/driver/awt/AWTDisplay.java
@@ -36,6 +36,7 @@ package jogamp.newt.driver.awt;
 
 import com.jogamp.nativewindow.awt.AWTGraphicsDevice;
 import com.jogamp.newt.NewtFactory;
+import com.jogamp.newt.util.EDTUtil;
 
 import jogamp.newt.DisplayImpl;
 
@@ -54,13 +55,17 @@ public class AWTDisplay extends DisplayImpl {
     protected void closeNativeImpl() { }
 
     @Override
-    protected void createEDTUtil() {
+    protected EDTUtil createEDTUtil() {
+        final EDTUtil def;
         if(NewtFactory.useEDT()) {
-            edtUtil = AWTEDTUtil.getSingleton();
+            def = AWTEDTUtil.getSingleton();
             if(DEBUG) {
-                System.err.println("AWTDisplay.createNative("+getFQName()+") Create EDTUtil: "+edtUtil.getClass().getName());
+                System.err.println("AWTDisplay.createNative("+getFQName()+") Create EDTUtil: "+def.getClass().getName());
             }
+        } else {
+            def = null;
         }
+        return def;
     }
 
     protected void dispatchMessagesNative() { /* nop */ }
diff --git a/src/newt/classes/jogamp/newt/driver/broadcom/egl/Display.java b/src/newt/classes/jogamp/newt/driver/broadcom/egl/Display.java
index f90c62ff4..e3f50b7e0 100644
--- a/src/newt/classes/jogamp/newt/driver/broadcom/egl/Display.java
+++ b/src/newt/classes/jogamp/newt/driver/broadcom/egl/Display.java
@@ -61,11 +61,11 @@ public class Display extends jogamp.newt.DisplayImpl {
     }
 
     protected void createNativeImpl() {
-        long handle = CreateDisplay(Screen.fixedWidth, Screen.fixedHeight);
+        final long handle = CreateDisplay(Screen.fixedWidth, Screen.fixedHeight);
         if (handle == EGL.EGL_NO_DISPLAY) {
             throw new NativeWindowException("BC EGL CreateDisplay failed");
         }
-        aDevice = new EGLGraphicsDevice(handle, AbstractGraphicsDevice.DEFAULT_CONNECTION, AbstractGraphicsDevice.DEFAULT_UNIT);
+        aDevice = new EGLGraphicsDevice(EGL.EGL_DEFAULT_DISPLAY, handle, AbstractGraphicsDevice.DEFAULT_CONNECTION, AbstractGraphicsDevice.DEFAULT_UNIT, null);
     }
 
     protected void closeNativeImpl() {
diff --git a/src/newt/classes/jogamp/newt/driver/broadcom/egl/Window.java b/src/newt/classes/jogamp/newt/driver/broadcom/egl/Window.java
index ed1d0511a..223ad6484 100644
--- a/src/newt/classes/jogamp/newt/driver/broadcom/egl/Window.java
+++ b/src/newt/classes/jogamp/newt/driver/broadcom/egl/Window.java
@@ -37,6 +37,7 @@ package jogamp.newt.driver.broadcom.egl;
 import javax.media.nativewindow.AbstractGraphicsConfiguration;
 import javax.media.nativewindow.GraphicsConfigurationFactory;
 import javax.media.nativewindow.NativeWindowException;
+import javax.media.nativewindow.VisualIDHolder;
 import javax.media.nativewindow.util.Insets;
 import javax.media.nativewindow.util.Point;
 import javax.media.opengl.GLCapabilitiesImmutable;
@@ -57,8 +58,8 @@ public class Window extends jogamp.newt.WindowImpl {
         }
         // query a good configuration, however chose the final one by the native queried egl-cfg-id  
         // after creation at {@link #windowCreated(int, int, int)}.
-        final AbstractGraphicsConfiguration cfg = GraphicsConfigurationFactory.getFactory(getScreen().getDisplay().getGraphicsDevice()).chooseGraphicsConfiguration(
-                capsRequested, capsRequested, capabilitiesChooser, getScreen().getGraphicsScreen());
+        final AbstractGraphicsConfiguration cfg = GraphicsConfigurationFactory.getFactory(getScreen().getDisplay().getGraphicsDevice(), capsRequested).chooseGraphicsConfiguration(
+                capsRequested, capsRequested, capabilitiesChooser, getScreen().getGraphicsScreen(), VisualIDHolder.VID_UNDEFINED);
         if (null == cfg) {
             throw new NativeWindowException("Error choosing GraphicsConfiguration creating window: "+this);
         }
diff --git a/src/newt/classes/jogamp/newt/driver/intel/gdl/Window.java b/src/newt/classes/jogamp/newt/driver/intel/gdl/Window.java
index 09e0e3016..d5c75abd4 100644
--- a/src/newt/classes/jogamp/newt/driver/intel/gdl/Window.java
+++ b/src/newt/classes/jogamp/newt/driver/intel/gdl/Window.java
@@ -54,8 +54,8 @@ public class Window extends jogamp.newt.WindowImpl {
         final AbstractGraphicsScreen aScreen = getScreen().getGraphicsScreen();
         final AbstractGraphicsDevice aDevice = getScreen().getDisplay().getGraphicsDevice();
 
-        final AbstractGraphicsConfiguration cfg = GraphicsConfigurationFactory.getFactory(aDevice).chooseGraphicsConfiguration(
-                capsRequested, capsRequested, capabilitiesChooser, aScreen);
+        final AbstractGraphicsConfiguration cfg = GraphicsConfigurationFactory.getFactory(aDevice, capsRequested).chooseGraphicsConfiguration(
+                capsRequested, capsRequested, capabilitiesChooser, aScreen, VisualIDHolder.VID_UNDEFINED);
         if (null == cfg) {
             throw new NativeWindowException("Error choosing GraphicsConfiguration creating window: "+this);
         }
diff --git a/src/newt/classes/jogamp/newt/driver/kd/KDDisplay.java b/src/newt/classes/jogamp/newt/driver/kd/KDDisplay.java
index 73bbe0b5b..07b031841 100644
--- a/src/newt/classes/jogamp/newt/driver/kd/KDDisplay.java
+++ b/src/newt/classes/jogamp/newt/driver/kd/KDDisplay.java
@@ -42,8 +42,6 @@ import jogamp.newt.NEWTJNILibLoader;
 import jogamp.opengl.egl.EGL;
 import jogamp.opengl.egl.EGLDisplayUtil;
 
-import com.jogamp.nativewindow.egl.EGLGraphicsDevice;
-
 public class KDDisplay extends DisplayImpl {
 
     static {
@@ -64,20 +62,11 @@ public class KDDisplay extends DisplayImpl {
 
     protected void createNativeImpl() {
         // FIXME: map name to EGL_*_DISPLAY
-        long handle = EGLDisplayUtil.eglGetDisplay(EGL.EGL_DEFAULT_DISPLAY);
-        if (handle == EGL.EGL_NO_DISPLAY) {
-            throw new NativeWindowException("eglGetDisplay failed");
-        }
-        if (!EGLDisplayUtil.eglInitialize(handle, null, null)) {
-            throw new NativeWindowException("eglInitialize failed");
-        }
-        aDevice = new EGLGraphicsDevice(handle, AbstractGraphicsDevice.DEFAULT_CONNECTION, AbstractGraphicsDevice.DEFAULT_UNIT);
+        aDevice = EGLDisplayUtil.eglCreateEGLGraphicsDevice(EGL.EGL_DEFAULT_DISPLAY, AbstractGraphicsDevice.DEFAULT_CONNECTION, AbstractGraphicsDevice.DEFAULT_UNIT);
     }
 
     protected void closeNativeImpl() {
-        if (aDevice.getHandle() != EGL.EGL_NO_DISPLAY) {
-            EGLDisplayUtil.eglTerminate(aDevice.getHandle());
-        }
+        aDevice.close();
     }
 
     protected void dispatchMessagesNative() {
diff --git a/src/newt/classes/jogamp/newt/driver/kd/KDWindow.java b/src/newt/classes/jogamp/newt/driver/kd/KDWindow.java
index bb76d21ff..9f9d6948e 100644
--- a/src/newt/classes/jogamp/newt/driver/kd/KDWindow.java
+++ b/src/newt/classes/jogamp/newt/driver/kd/KDWindow.java
@@ -37,6 +37,7 @@ package jogamp.newt.driver.kd;
 import javax.media.nativewindow.AbstractGraphicsConfiguration;
 import javax.media.nativewindow.GraphicsConfigurationFactory;
 import javax.media.nativewindow.NativeWindowException;
+import javax.media.nativewindow.VisualIDHolder;
 import javax.media.nativewindow.VisualIDHolder.VIDType;
 import javax.media.nativewindow.util.Insets;
 import javax.media.nativewindow.util.Point;
@@ -59,8 +60,8 @@ public class KDWindow extends WindowImpl {
         if(0!=getParentWindowHandle()) {
             throw new RuntimeException("Window parenting not supported (yet)");
         }
-        final AbstractGraphicsConfiguration cfg = GraphicsConfigurationFactory.getFactory(getScreen().getDisplay().getGraphicsDevice()).chooseGraphicsConfiguration(
-                capsRequested, capsRequested, capabilitiesChooser, getScreen().getGraphicsScreen());
+        final AbstractGraphicsConfiguration cfg = GraphicsConfigurationFactory.getFactory(getScreen().getDisplay().getGraphicsDevice(), capsRequested).chooseGraphicsConfiguration(
+                capsRequested, capsRequested, capabilitiesChooser, getScreen().getGraphicsScreen(), VisualIDHolder.VID_UNDEFINED);
         if (null == cfg) {
             throw new NativeWindowException("Error choosing GraphicsConfiguration creating window: "+this);
         }
diff --git a/src/newt/classes/jogamp/newt/driver/macosx/MacWindow.java b/src/newt/classes/jogamp/newt/driver/macosx/MacWindow.java
index 942994c13..27d7a1679 100644
--- a/src/newt/classes/jogamp/newt/driver/macosx/MacWindow.java
+++ b/src/newt/classes/jogamp/newt/driver/macosx/MacWindow.java
@@ -38,7 +38,8 @@ import javax.media.nativewindow.AbstractGraphicsConfiguration;
 import javax.media.nativewindow.GraphicsConfigurationFactory;
 import javax.media.nativewindow.NativeWindow;
 import javax.media.nativewindow.NativeWindowException;
-import javax.media.nativewindow.SurfaceChangeable;
+import javax.media.nativewindow.MutableSurface;
+import javax.media.nativewindow.VisualIDHolder;
 import javax.media.nativewindow.util.Insets;
 import javax.media.nativewindow.util.InsetsImmutable;
 import javax.media.nativewindow.util.Point;
@@ -50,7 +51,7 @@ import jogamp.newt.driver.DriverUpdatePosition;
 
 import com.jogamp.newt.event.KeyEvent;
 
-public class MacWindow extends WindowImpl implements SurfaceChangeable, DriverClearFocus, DriverUpdatePosition {
+public class MacWindow extends WindowImpl implements MutableSurface, DriverClearFocus, DriverUpdatePosition {
     
     static {
         MacDisplay.initSingleton();
@@ -61,8 +62,8 @@ public class MacWindow extends WindowImpl implements SurfaceChangeable, DriverCl
     
     @Override
     protected void createNativeImpl() {
-        final AbstractGraphicsConfiguration cfg = GraphicsConfigurationFactory.getFactory(getScreen().getDisplay().getGraphicsDevice()).chooseGraphicsConfiguration(
-                capsRequested, capsRequested, capabilitiesChooser, getScreen().getGraphicsScreen());
+        final AbstractGraphicsConfiguration cfg = GraphicsConfigurationFactory.getFactory(getScreen().getDisplay().getGraphicsDevice(), capsRequested).chooseGraphicsConfiguration(
+                capsRequested, capsRequested, capabilitiesChooser, getScreen().getGraphicsScreen(), VisualIDHolder.VID_UNDEFINED);
         if (null == cfg) {
             throw new NativeWindowException("Error choosing GraphicsConfiguration creating window: "+this);
         }
@@ -131,10 +132,6 @@ public class MacWindow extends WindowImpl implements SurfaceChangeable, DriverCl
         }        
     }
 
-    public void surfaceSizeChanged(int width, int height) {
-        sizeChanged(false, width, height, false);
-    }
-    
     @Override
     protected void setTitleImpl(final String title) {
         setTitle0(getWindowHandle(), title);
@@ -153,7 +150,7 @@ public class MacWindow extends WindowImpl implements SurfaceChangeable, DriverCl
             System.err.println("MacWindow: clearFocus() - requestFocusParent, isOffscreenInstance "+isOffscreenInstance);
         }
         if(!isOffscreenInstance) {
-            requestFocusParent0(getWindowHandle());
+            resignFocus0(getWindowHandle());
         } else {
             focusChanged(false, false);
         }
@@ -363,7 +360,6 @@ public class MacWindow extends WindowImpl implements SurfaceChangeable, DriverCl
                 if(recreate && 0==surfaceHandle) {
                     throw new NativeWindowException("Internal Error - recreate, window but no view");
                 }
-                orderOut0(getWindowHandle());
                 close0(getWindowHandle());
                 setWindowHandle(0);
             } else {
@@ -400,7 +396,7 @@ public class MacWindow extends WindowImpl implements SurfaceChangeable, DriverCl
     private native boolean lockSurface0(long window);
     private native void unlockSurface0(long window);
     private native void requestFocus0(long window, boolean force);
-    private native void requestFocusParent0(long window);
+    private native void resignFocus0(long window);
     /** in case of a child window, it actually only issues orderBack(..) */
     private native void orderOut0(long window);
     private native void orderFront0(long window);
diff --git a/src/newt/classes/jogamp/newt/driver/windows/WindowsWindow.java b/src/newt/classes/jogamp/newt/driver/windows/WindowsWindow.java
index 5e636d982..6a8c81f3d 100644
--- a/src/newt/classes/jogamp/newt/driver/windows/WindowsWindow.java
+++ b/src/newt/classes/jogamp/newt/driver/windows/WindowsWindow.java
@@ -41,6 +41,7 @@ import jogamp.newt.WindowImpl;
 import javax.media.nativewindow.AbstractGraphicsConfiguration;
 import javax.media.nativewindow.GraphicsConfigurationFactory;
 import javax.media.nativewindow.NativeWindowException;
+import javax.media.nativewindow.VisualIDHolder;
 import javax.media.nativewindow.util.Insets;
 import javax.media.nativewindow.util.InsetsImmutable;
 import javax.media.nativewindow.util.Point;
@@ -119,8 +120,8 @@ public class WindowsWindow extends WindowImpl {
     protected void createNativeImpl() {
         final WindowsScreen  screen = (WindowsScreen) getScreen();
         final WindowsDisplay display = (WindowsDisplay) screen.getDisplay();
-        final AbstractGraphicsConfiguration cfg = GraphicsConfigurationFactory.getFactory(display.getGraphicsDevice()).chooseGraphicsConfiguration(
-                capsRequested, capsRequested, capabilitiesChooser, screen.getGraphicsScreen());
+        final AbstractGraphicsConfiguration cfg = GraphicsConfigurationFactory.getFactory(display.getGraphicsDevice(), capsRequested).chooseGraphicsConfiguration(
+                capsRequested, capsRequested, capabilitiesChooser, screen.getGraphicsScreen(), VisualIDHolder.VID_UNDEFINED);
         if (null == cfg) {
             throw new NativeWindowException("Error choosing GraphicsConfiguration creating window: "+this);
         }
@@ -150,8 +151,8 @@ public class WindowsWindow extends WindowImpl {
     }
 
     protected void closeNativeImpl() {
-        if (hdc != 0) {
-            if(windowHandleClose != 0) {
+        if(windowHandleClose != 0) {
+            if (hdc != 0) {
                 try {
                     GDI.ReleaseDC(windowHandleClose, hdc);
                 } catch (Throwable t) {
@@ -161,11 +162,8 @@ public class WindowsWindow extends WindowImpl {
                     }
                 }
             }
-            hdc = 0;
-            hdc_old = 0;
-        }
-        if(windowHandleClose != 0) {
             try {
+                GDI.SetParent(windowHandleClose, 0); // detach first, experience hang w/ SWT parent
                 GDI.DestroyWindow(windowHandleClose);
             } catch (Throwable t) {
                 if(DEBUG_IMPLEMENTATION) {
@@ -176,6 +174,8 @@ public class WindowsWindow extends WindowImpl {
                 windowHandleClose = 0;
             }
         }
+        hdc = 0;
+        hdc_old = 0;
     }
 
     protected boolean reconfigureWindowImpl(int x, int y, int width, int height, int flags) {
diff --git a/src/newt/classes/jogamp/newt/driver/x11/X11Window.java b/src/newt/classes/jogamp/newt/driver/x11/X11Window.java
index 9a5074c29..5501f5a3c 100644
--- a/src/newt/classes/jogamp/newt/driver/x11/X11Window.java
+++ b/src/newt/classes/jogamp/newt/driver/x11/X11Window.java
@@ -63,9 +63,9 @@ public class X11Window extends WindowImpl {
     protected void createNativeImpl() {
         final X11Screen screen = (X11Screen) getScreen();
         final X11Display display = (X11Display) screen.getDisplay();
-        final GraphicsConfigurationFactory factory = GraphicsConfigurationFactory.getFactory(display.getGraphicsDevice());
+        final GraphicsConfigurationFactory factory = GraphicsConfigurationFactory.getFactory(display.getGraphicsDevice(), capsRequested);
         final AbstractGraphicsConfiguration cfg = factory.chooseGraphicsConfiguration(
-                capsRequested, capsRequested, capabilitiesChooser, screen.getGraphicsScreen());
+                capsRequested, capsRequested, capabilitiesChooser, screen.getGraphicsScreen(), VisualIDHolder.VID_UNDEFINED);
         if(DEBUG_IMPLEMENTATION) {
             System.err.println("X11Window.createNativeImpl() factory: "+factory+", chosen config: "+cfg);
         }        
diff --git a/src/newt/classes/jogamp/newt/event/NEWTEventTask.java b/src/newt/classes/jogamp/newt/event/NEWTEventTask.java
index fae6560b4..93d5e2fb9 100644
--- a/src/newt/classes/jogamp/newt/event/NEWTEventTask.java
+++ b/src/newt/classes/jogamp/newt/event/NEWTEventTask.java
@@ -35,17 +35,22 @@ import com.jogamp.newt.event.NEWTEvent;
  * which notifies after sending the event for the <code>invokeAndWait()</code> semantics.
  */
 public class NEWTEventTask {
-    NEWTEvent event;
-    Object notifyObject;
+    private NEWTEvent event;
+    private Object notifyObject;
+    private RuntimeException exception;
 
     public NEWTEventTask(NEWTEvent event, Object notifyObject) {
         this.event = event ;
         this.notifyObject = notifyObject ;
+        this.exception = null;
     }
 
-    public NEWTEvent get() { return event; }
+    public final NEWTEvent get() { return event; }
+    public final void setException(RuntimeException e) { exception = e; }
+    public final RuntimeException getException() { return exception; }
+    public final boolean isCallerWaiting() { return null != notifyObject; }
 
-    public void notifyIssuer() {
+    public void notifyCaller() {
         if(null != notifyObject) {
             synchronized (notifyObject) {
                 notifyObject.notifyAll();
diff --git a/src/newt/native/MacWindow.m b/src/newt/native/MacWindow.m
index 01cbd80ec..bbadc9dd0 100644
--- a/src/newt/native/MacWindow.m
+++ b/src/newt/native/MacWindow.m
@@ -599,6 +599,15 @@ JNIEXPORT jlong JNICALL Java_jogamp_newt_driver_macosx_MacWindow_createWindow0
     }
     DBG_PRINT( "createWindow0 - is visible.1: %d\n", [myWindow isVisible]);
 
+    // Remove animations for child windows
+    if(NULL != parentWindow) {
+NS_DURING
+        // Available >= 10.7 - Removes default animations
+        [myWindow setAnimationBehavior: NSWindowAnimationBehaviorNone];
+NS_HANDLER
+NS_ENDHANDLER
+    }
+
 #ifdef VERBOSE_ON
     int dbgIdx = 1;
 #endif
@@ -734,7 +743,7 @@ NS_ENDHANDLER
     if(NULL!=pWin) {
         [mWin detachFromParent: pWin];
     }
-    [mWin orderOut: mWin];
+    [mWin performSelectorOnMainThread:@selector(orderOut:) withObject:mWin waitUntilDone:NO];
 
     DBG_PRINT( "windowClose.1 - %p,%d view %p,%d, parent %p\n", 
         mWin, getRetainCount(mWin), mView, getRetainCount(mView), pWin);
@@ -742,11 +751,6 @@ NS_ENDHANDLER
     // Only release window, if release is not yet in process.
     // E.g. destroyNotifySent:=true set by NewtMacWindow::windowWillClose(), i.e. window-close was clicked.
     if(!destroyNotifySent) { 
-        // '[mWin close]' causes a crash at exit.
-        // This probably happens b/c it sends events to the main loop
-        // but our resources are gone ?!
-        // However, issuing a simple release seems to work quite well.
-        // [mWin release];
         [mWin performSelectorOnMainThread:@selector(release) withObject:nil waitUntilDone:NO];
     }
 
@@ -806,11 +810,8 @@ JNIEXPORT void JNICALL Java_jogamp_newt_driver_macosx_MacWindow_requestFocus0
     DBG_PRINT( "requestFocus - window: %p, force %d, hasFocus %d (START)\n", mWin, force, hasFocus);
 
     [mWin makeFirstResponder: nil];
-    [mWin performSelectorOnMainThread:@selector(orderFrontRegardless) withObject:nil waitUntilDone:YES];
-    [mWin performSelectorOnMainThread:@selector(makeKeyWindow) withObject:nil waitUntilDone:YES];
-    // This will occasionally cause a free of non allocated object crash:
-    // [mWin orderFrontRegardless];
-    // [mWin makeKeyWindow];
+    [mWin performSelectorOnMainThread:@selector(orderFrontRegardless) withObject:nil waitUntilDone:NO];
+    [mWin performSelectorOnMainThread:@selector(makeKeyWindow) withObject:nil waitUntilDone:NO];
 
     DBG_PRINT( "requestFocus - window: %p, force %d (END)\n", mWin, force);
 
@@ -819,26 +820,27 @@ JNIEXPORT void JNICALL Java_jogamp_newt_driver_macosx_MacWindow_requestFocus0
 
 /*
  * Class:     jogamp_newt_driver_macosx_MacWindow
- * Method:    requestFocusParent0
+ * Method:    resignFocus0
  * Signature: (J)V
  */
-JNIEXPORT void JNICALL Java_jogamp_newt_driver_macosx_MacWindow_requestFocusParent0
+JNIEXPORT void JNICALL Java_jogamp_newt_driver_macosx_MacWindow_resignFocus0
   (JNIEnv *env, jobject window, jlong w)
 {
     NSAutoreleasePool* pool = [[NSAutoreleasePool alloc] init];
     NSWindow* mWin = (NSWindow*) ((intptr_t) w);
     NSWindow* pWin = [mWin parentWindow];
-#ifdef VERBOSE_ON
     BOOL hasFocus = [mWin isKeyWindow];
-#endif
 
-    DBG_PRINT( "requestFocusParent0 - window: %p, parent: %p, hasFocus %d (START)\n", mWin, pWin, hasFocus );
-    if(NULL != pWin) {
-        [pWin performSelectorOnMainThread:@selector(makeKeyWindow) withObject:nil waitUntilDone:YES];
-        // This will occasionally cause a free of non allocated object crash:
-        // [pWin makeKeyWindow];
+    DBG_PRINT( "requestFocusParent0 - window: %p, parent %p, hasFocus %d (START)\n", mWin, pWin, hasFocus );
+    if( hasFocus ) {
+        if(NULL != pWin) {
+            // [mWin performSelectorOnMainThread:@selector(makeFirstResponder:) withObject:pWin waitUntilDone:NO];
+            [pWin performSelectorOnMainThread:@selector(makeKeyWindow) withObject:nil waitUntilDone:NO];
+        } else {
+            [mWin performSelectorOnMainThread:@selector(resignKeyWindow) withObject:nil waitUntilDone:NO];
+        }
     }
-    DBG_PRINT( "requestFocusParent0 - window: %p, parent: %p (END)\n", mWin, pWin);
+    DBG_PRINT( "requestFocusParent0 - window: %p (END)\n", mWin);
 
     [pool release];
 }
@@ -856,9 +858,7 @@ JNIEXPORT void JNICALL Java_jogamp_newt_driver_macosx_MacWindow_orderFront0
 
     DBG_PRINT( "orderFront0 - window: %p (START)\n", win);
 
-    [win performSelectorOnMainThread:@selector(orderFrontRegardless) withObject:nil waitUntilDone:YES];
-    // This will occasionally cause a free of non allocated object crash:
-    // [win orderFrontRegardless];
+    [win performSelectorOnMainThread:@selector(orderFrontRegardless) withObject:nil waitUntilDone:NO];
 
     DBG_PRINT( "orderFront0 - window: %p (END)\n", win);
 
@@ -880,13 +880,9 @@ JNIEXPORT void JNICALL Java_jogamp_newt_driver_macosx_MacWindow_orderOut0
     DBG_PRINT( "orderOut0 - window: (parent %p) %p (START)\n", pWin, mWin);
 
     if(NULL == pWin) {
-        [mWin performSelectorOnMainThread:@selector(orderOut:) withObject:mWin waitUntilDone:YES];
-        // This will occasionally cause a free of non allocated object crash:
-        // [mWin orderOut: mWin];
+        [mWin performSelectorOnMainThread:@selector(orderOut:) withObject:mWin waitUntilDone:NO];
     } else {
-        [mWin performSelectorOnMainThread:@selector(orderBack:) withObject:mWin waitUntilDone:YES];
-        // This will occasionally cause a free of non allocated object crash:
-        // [mWin orderBack: mWin];
+        [mWin performSelectorOnMainThread:@selector(orderBack:) withObject:mWin waitUntilDone:NO];
     }
 
     DBG_PRINT( "orderOut0 - window: (parent %p) %p (END)\n", pWin, mWin);
diff --git a/src/newt/native/NewtMacWindow.m b/src/newt/native/NewtMacWindow.m
index f914467af..b58b99e38 100644
--- a/src/newt/native/NewtMacWindow.m
+++ b/src/newt/native/NewtMacWindow.m
@@ -972,7 +972,7 @@ static jint mods2JavaMods(NSUInteger mods)
 
     NSView* nsview = [self contentView];
     if( ! [nsview isMemberOfClass:[NewtView class]] ) {
-        return;
+        return NO;
     }
     NewtView* view = (NewtView *) nsview;
 
@@ -981,14 +981,14 @@ static jint mods2JavaMods(NSUInteger mods)
         DBG_PRINT( "*************** windowWillClose.0: %p\n", (void *)(intptr_t)javaWindowObject);
         if (javaWindowObject == NULL) {
             DBG_PRINT("windowWillClose: null javaWindowObject\n");
-            return;
+            return NO;
         }
         int shallBeDetached = 0;
         JavaVM *jvmHandle = [view getJVMHandle];
         JNIEnv* env = NewtCommon_GetJNIEnv(jvmHandle, [view getJVMVersion], &shallBeDetached);
         if(NULL==env) {
             DBG_PRINT("windowWillClose: null JNIEnv\n");
-            return;
+            return NO;
         }
 
         [view setDestroyNotifySent: true]; // earmark assumption of being closed