SWT Update: SWT GLCanvas creates lazy when resource is ready; Create new NewtCanvasSWT allowing to parent NEWT windows natively.

SWT GLCanvas creates lazy when resource is ready
  - Ensures drawable and context are created when size > zero and native visualID is valid.
    The latter is platform dependent.
  - Note that you cannot utilize custom GLCapabilities w/ this one,
    since the configurations is already realized - use NewtCanvasSWT.

Create new NewtCanvasSWT allowing to parent NEWT windows natively:
  - Similar to NewtCanvasAWT
  - Allows attaching / detaching NEWT windows

NewtCanvasAWT: Public setNEWTChild(..) fixed

Added test cases for the above - tested on Linux, OSX and Windows w/ SWT

Note: As usual for OSX, add -XstartOnFirstThread

Details:

- NEWT Display has new method: 'EDTUtil setEDTUtil(EDTUtil)'
  allowing to set a custom event dispatch utility.
  We use this to set our SWTEDTUtil for using NEWT w/ SWT
  complying w/ SWT threading constraints.

25 files changed, 2038 insertions, 448 deletions

diff --git a/src/jogl/classes/com/jogamp/gluegen/opengl/BuildComposablePipeline.java b/src/jogl/classes/com/jogamp/gluegen/opengl/BuildComposablePipeline.java
index 1d9cf3668..5334d45cf 100644
--- a/src/jogl/classes/com/jogamp/gluegen/opengl/BuildComposablePipeline.java
+++ b/src/jogl/classes/com/jogamp/gluegen/opengl/BuildComposablePipeline.java
@@ -410,7 +410,7 @@ public class BuildComposablePipeline {
             output.flush();
             output.close();
 
-            System.out.println("wrote to file: " + file); // JAU
+            System.out.println("wrote to file: " + file);
         }
 
         /** Get the name of the object through which API calls should be routed. */
diff --git a/src/jogl/classes/com/jogamp/opengl/swt/GLCanvas.java b/src/jogl/classes/com/jogamp/opengl/swt/GLCanvas.java
index 64ee1c1ad..8d237162c 100644
--- a/src/jogl/classes/com/jogamp/opengl/swt/GLCanvas.java
+++ b/src/jogl/classes/com/jogamp/opengl/swt/GLCanvas.java
@@ -45,6 +45,7 @@ import javax.media.opengl.GLProfile;
 import javax.media.opengl.GLRunnable;
 import javax.media.opengl.Threading;
 
+import jogamp.opengl.Debug;
 import jogamp.opengl.GLContextImpl;
 import jogamp.opengl.GLDrawableHelper;
 
@@ -70,8 +71,12 @@ import com.jogamp.opengl.JoglVersion;
 
 /**
  * Native SWT Canvas implementing GLAutoDrawable
+ * 
+ * <p>Note: To employ custom GLCapabilities, NewtCanvasSWT shall be used instead.</p>
+ * 
  */
 public class GLCanvas extends Canvas implements GLAutoDrawable {
+  private static final boolean DEBUG = Debug.debug("GLCanvas");
 
    /*
     * Flag for whether the SWT thread should be used for OpenGL calls when in single-threaded mode. This is controlled
@@ -87,18 +92,20 @@ public class GLCanvas extends Canvas implements GLAutoDrawable {
    /* GL Stuff */
    private final RecursiveLock lock = LockFactory.createRecursiveLock();
    private final GLDrawableHelper helper = new GLDrawableHelper();
+   
+   private final GLContext shareWith;
+   private final GLCapabilitiesImmutable capsRequested;
+   private final GLCapabilitiesChooser capsChooser; 
+   
    private volatile GLDrawable drawable; // volatile: avoid locking for read-only access
    private GLContext context;
 
    /* Native window surface */
    private AbstractGraphicsDevice device;
-   private final long nativeWindowHandle;
-   private final ProxySurface proxySurface;
 
    /* Construction parameters stored for GLAutoDrawable accessor methods */
    private int additionalCtxCreationFlags = 0;
 
-   private final GLCapabilitiesImmutable glCapsRequested;
 
    /* Flag indicating whether an unprocessed reshape is pending. */
    private volatile boolean sendReshape; // volatile: maybe written by WindowManager thread w/o locking
@@ -218,6 +225,37 @@ public class GLCanvas extends Canvas implements GLAutoDrawable {
     */
    private volatile Rectangle clientArea;
 
+   /** 
+    * Creates an instance using {@link #GLCanvas(Composite, int, GLCapabilitiesImmutable, GLCapabilitiesChooser, GLContext)} 
+    * on the SWT thread.
+    * 
+    * @param parent
+    *           Required (non-null) parent Composite.
+    * @param style
+    *           Optional SWT style bit-field. The {@link SWT#NO_BACKGROUND} bit is set before passing this up to the
+    *           Canvas constructor, so OpenGL handles the background.
+    * @param caps
+    *           Optional GLCapabilities. If not provided, the default capabilities for the default GLProfile for the
+    *           graphics device determined by the parent Composite are used. Note that the GLCapabilities that are
+    *           actually used may differ based on the capabilities of the graphics device.
+    * @param chooser
+    *           Optional GLCapabilitiesChooser to customize the selection of the used GLCapabilities based on the
+    *           requested GLCapabilities, and the available capabilities of the graphics device.
+    * @param shareWith
+    *           Optional GLContext to share state (textures, vbos, shaders, etc.) with.
+    * @return a new instance
+    */
+   public static GLCanvas create(final Composite parent, final int style, final GLCapabilitiesImmutable caps,
+                                 final GLCapabilitiesChooser chooser, final GLContext shareWith) {
+       final GLCanvas[] res = new GLCanvas[] { null }; 
+       parent.getDisplay().syncExec(new Runnable() {
+           public void run() {
+               res[0] = new GLCanvas( parent, style, caps, chooser, shareWith );
+           }
+       });
+       return res[0];
+   }
+
    /**
     * Creates a new SWT GLCanvas.
     *
@@ -250,35 +288,26 @@ public class GLCanvas extends Canvas implements GLAutoDrawable {
       /* 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. */
       device = SWTAccessor.getDevice(this);
-      /* Since we have no means of querying the screen index yet, assume 0. Good choice due to Xinerama alike settings anyways. */
-      final int screenIdx = 0;
-      /* Native handle for the control, used to associate with GLContext */
-      nativeWindowHandle = SWTAccessor.getWindowHandle(this);
 
       /* Select default GLCapabilities if none was provided, otherwise clone provided caps to ensure safety */
       if(null == caps) {
           caps = new GLCapabilities(GLProfile.getDefault(device));
       }
-      glCapsRequested = caps;
-
-      final GLDrawableFactory glFactory = GLDrawableFactory.getFactory(caps.getGLProfile());
-
-      /* Create a NativeWindow proxy for the SWT canvas */
-      proxySurface = glFactory.createProxySurface(device, screenIdx, nativeWindowHandle, caps, chooser, swtCanvasUpStreamHook);
-
-      /* Associate a GL surface with the proxy */
-      drawable = glFactory.createGLDrawable(proxySurface);
-      drawable.setRealized(true);
-
-      context = drawable.createContext(shareWith);
-
+      this.capsRequested = caps;
+      this.capsChooser = chooser;
+      this.shareWith = shareWith;
+
+      // post create .. when ready
+      drawable = null;
+      context = null;
+      
       /* 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 (!helper.isExternalAnimatorAnimating()) {
-               display();
+            if ( !helper.isExternalAnimatorAnimating() ) {                
+               display(); // checks: null != drawable
             }
          }
       });
@@ -291,39 +320,93 @@ public class GLCanvas extends Canvas implements GLAutoDrawable {
       });
    }
    private final ProxySurface.UpstreamSurfaceHook swtCanvasUpStreamHook = new ProxySurface.UpstreamSurfaceHook() {
-    @Override
-    public final void create(ProxySurface s) { /* nop */ }
-
-    @Override
-    public final void destroy(ProxySurface s) { /* nop */ }
-
-    @Override
-    public final int getWidth(ProxySurface s) {
-        return clientArea.width;
-    }
-
-    @Override
-    public final int getHeight(ProxySurface s) {
-        return clientArea.height;
-    }
-    
-    @Override
-    public String toString() {
-        return "SETUpstreamSurfaceHook[upstream: "+GLCanvas.this.toString()+"]";
-    }
-
+       @Override
+       public final void create(ProxySurface s) { /* nop */ }
+
+       @Override
+       public final void destroy(ProxySurface s) { /* nop */ }
+
+       @Override
+       public final int getWidth(ProxySurface s) {
+           return clientArea.width;
+       }
+
+       @Override
+       public final int getHeight(ProxySurface s) {
+           return clientArea.height;
+       }
+
+       @Override
+       public String toString() {
+           return "SWTCanvasUpstreamSurfaceHook[upstream: "+GLCanvas.this.toString()+", "+clientArea.width+"x"+clientArea.height+"]";
+       }
    };
 
    protected final void updateSizeCheck() {
-      clientArea = GLCanvas.this.getClientArea();
-      if (clientArea != null && 
-          proxySurface.getWidth() != clientArea.width && 
-          proxySurface.getHeight() != clientArea.height) {
+      final Rectangle oClientArea = clientArea;
+      final Rectangle nClientArea = GLCanvas.this.getClientArea();
+      if ( nClientArea != null && 
+           ( nClientArea.width != oClientArea.width || nClientArea.height != oClientArea.height )
+         ) {
+          clientArea = nClientArea; // write back new value
           sendReshape = true; // Mark for OpenGL reshape next time the control is painted
       }
-      sendReshape = false;
+   }
+   
+   @Override
+   public void display() {
+      if( null != drawable || validateDrawableAndContext() ) {
+          runInGLThread(makeCurrentAndDisplayOnEDTAction);
+      }
    }
 
+   
+   /** assumes drawable == null ! */
+   protected final boolean validateDrawableAndContext() {
+      if( GLCanvas.this.isDisposed() ) {
+          return false;
+      }
+      final Rectangle nClientArea = clientArea;
+      if(0 == nClientArea.width * nClientArea.height) {
+          return false;
+      }
+               
+      final RecursiveLock _lock = lock;
+      _lock.lock();
+      try {
+          final GLDrawableFactory glFactory = GLDrawableFactory.getFactory(capsRequested.getGLProfile());
+    
+          /* Native handle for the control, used to associate with GLContext */
+          final long nativeWindowHandle = SWTAccessor.getWindowHandle(this);
+          
+          /* Create a NativeWindow proxy for the SWT canvas */
+          ProxySurface proxySurface = null;
+          try {
+              proxySurface = glFactory.createProxySurface(device, 0 /* screenIdx */, nativeWindowHandle, 
+                                                          capsRequested, capsChooser, swtCanvasUpStreamHook);
+          } catch (GLException gle) {
+              // not ready yet ..
+              if(DEBUG) { System.err.println(gle.getMessage()); }
+          }
+          
+          if(null != proxySurface) {
+              /* Associate a GL surface with the proxy */
+              drawable = glFactory.createGLDrawable(proxySurface);
+              drawable.setRealized(true);
+        
+              context = drawable.createContext(shareWith);
+          }
+      } finally {
+          _lock.unlock();
+      }
+      final boolean res = null != drawable;
+      if(DEBUG && res) {
+          System.err.println("SWT GLCanvas realized! "+this+", "+drawable);
+          Thread.dumpStack();
+      }
+      return res;
+   }
+   
    @Override
    public final Object getUpstreamWidget() {
        return this;
@@ -363,11 +446,6 @@ public class GLCanvas extends Canvas implements GLAutoDrawable {
    }
 
    @Override
-   public void display() {
-      runInGLThread(makeCurrentAndDisplayOnEDTAction);
-   }
-
-   @Override
    public GLAnimatorControl getAnimator() {
       return helper.getAnimator();
    }
@@ -379,7 +457,7 @@ public class GLCanvas extends Canvas implements GLAutoDrawable {
 
    @Override
    public GLContext getContext() {
-      return context;
+      return null != drawable ? context : null;
    }
 
    @Override
@@ -472,7 +550,8 @@ public class GLCanvas extends Canvas implements GLAutoDrawable {
 
    @Override
    public GLCapabilitiesImmutable getChosenGLCapabilities() {
-      return (GLCapabilitiesImmutable)proxySurface.getGraphicsConfiguration().getChosenCapabilities();
+      final GLDrawable _drawable = drawable; 
+      return null != _drawable ? (GLCapabilitiesImmutable)_drawable.getChosenGLCapabilities() : null;
    }
 
    /**
@@ -481,7 +560,8 @@ public class GLCanvas extends Canvas implements GLAutoDrawable {
     * @return Non-null GLCapabilities.
     */
    public GLCapabilitiesImmutable getRequestedGLCapabilities() {
-      return (GLCapabilitiesImmutable)proxySurface.getGraphicsConfiguration().getRequestedCapabilities();
+      final GLDrawable _drawable = drawable; 
+      return null != _drawable ? (GLCapabilitiesImmutable)_drawable.getNativeSurface().getGraphicsConfiguration().getRequestedCapabilities() : null;
    }
 
    @Override
@@ -492,7 +572,7 @@ public class GLCanvas extends Canvas implements GLAutoDrawable {
 
    @Override
    public GLProfile getGLProfile() {
-      return glCapsRequested.getGLProfile();
+      return capsRequested.getGLProfile();
    }
 
    @Override
@@ -523,10 +603,9 @@ public class GLCanvas extends Canvas implements GLAutoDrawable {
       runInGLThread(makeCurrentAndSwapBuffersOnEDTAction);
    }
 
-   // FIXME: API of update() method ?
    @Override
    public void update() {
-      // FIXME: display(); ?
+      // don't paint background etc .. nop avoids flickering
    }
 
    @Override
@@ -551,7 +630,7 @@ public class GLCanvas extends Canvas implements GLAutoDrawable {
     * @see Platform#AWT_AVAILABLE
     * @see Platform#getOSType()
     */
-   private void runInGLThread(final Runnable action) {
+   private static void runInGLThread(final Runnable action) {
       if(Platform.OSType.MACOS == Platform.OS_TYPE) {
           SWTAccessor.invoke(true, action);
       } else {
diff --git a/src/jogl/classes/jogamp/opengl/GLContextImpl.java b/src/jogl/classes/jogamp/opengl/GLContextImpl.java
index e730bc62e..bf6a0ee6e 100644
--- a/src/jogl/classes/jogamp/opengl/GLContextImpl.java
+++ b/src/jogl/classes/jogamp/opengl/GLContextImpl.java
@@ -338,7 +338,6 @@ public abstract class GLContextImpl extends GLContext {
                   if (TRACE_SWITCH) {
                       System.err.println(getThreadName() + ": GLContextImpl.destroy.X: obj " + toHexString(hashCode()) + ", ctx " + toHexString(contextHandle) +
                               ", isShared "+GLContextShareSet.isShared(this)+" - "+lock);
-                      Thread.dumpStack(); // JAU
                   }
               }
           } finally {
diff --git a/src/nativewindow/classes/com/jogamp/nativewindow/swt/SWTAccessor.java b/src/nativewindow/classes/com/jogamp/nativewindow/swt/SWTAccessor.java
index 0494bb408..ba07d97dc 100644
--- a/src/nativewindow/classes/com/jogamp/nativewindow/swt/SWTAccessor.java
+++ b/src/nativewindow/classes/com/jogamp/nativewindow/swt/SWTAccessor.java
@@ -34,16 +34,21 @@ import java.lang.reflect.Method;
 import org.eclipse.swt.graphics.GCData;
 import org.eclipse.swt.widgets.Control;
 
+import javax.media.nativewindow.AbstractGraphicsScreen;
+import javax.media.nativewindow.DefaultGraphicsScreen;
 import javax.media.nativewindow.NativeWindowException;
 import javax.media.nativewindow.AbstractGraphicsDevice;
 import javax.media.nativewindow.NativeWindowFactory;
+import javax.media.nativewindow.VisualIDHolder;
 
 import com.jogamp.common.util.ReflectionUtil;
 import com.jogamp.nativewindow.macosx.MacOSXGraphicsDevice;
 import com.jogamp.nativewindow.windows.WindowsGraphicsDevice;
 import com.jogamp.nativewindow.x11.X11GraphicsDevice;
+import com.jogamp.nativewindow.x11.X11GraphicsScreen;
 
 import jogamp.nativewindow.macosx.OSXUtil;
+import jogamp.nativewindow.x11.X11Lib;
 
 public class SWTAccessor {
     static final Field swt_control_handle;
@@ -213,6 +218,26 @@ public class SWTAccessor {
         }
         throw new UnsupportedOperationException("n/a for this windowing system: "+NativeWindowFactory.getNativeWindowType(false));
     }
+    public static AbstractGraphicsScreen getScreen(AbstractGraphicsDevice device, int screen) {
+        if( null != OS_gtk_class ) {
+            return new X11GraphicsScreen((X11GraphicsDevice)device, screen);
+        } 
+        if( NativeWindowFactory.TYPE_WINDOWS == NativeWindowFactory.getNativeWindowType(false) ||
+            NativeWindowFactory.TYPE_MACOSX == NativeWindowFactory.getNativeWindowType(false) ) {
+            return new DefaultGraphicsScreen(device, screen);
+        }
+        throw new UnsupportedOperationException("n/a for this windowing system: "+NativeWindowFactory.getNativeWindowType(false));        
+    }
+    public static int getNativeVisualID(AbstractGraphicsDevice device, long windowHandle) {
+        if( null != OS_gtk_class ) {
+            return X11Lib.GetVisualIDFromWindow(device.getHandle(), windowHandle);
+        }
+        if( NativeWindowFactory.TYPE_WINDOWS == NativeWindowFactory.getNativeWindowType(false) ||
+            NativeWindowFactory.TYPE_MACOSX == NativeWindowFactory.getNativeWindowType(false) ) {
+            return VisualIDHolder.VID_UNDEFINED;
+        }
+        throw new UnsupportedOperationException("n/a for this windowing system: "+NativeWindowFactory.getNativeWindowType(false));        
+    }
     
     public static long getWindowHandle(Control swtControl) {
         long handle = getHandle(swtControl);        
diff --git a/src/nativewindow/classes/javax/media/nativewindow/NativeWindowFactory.java b/src/nativewindow/classes/javax/media/nativewindow/NativeWindowFactory.java
index b85ad47f2..6faa9890c 100644
--- a/src/nativewindow/classes/javax/media/nativewindow/NativeWindowFactory.java
+++ b/src/nativewindow/classes/javax/media/nativewindow/NativeWindowFactory.java
@@ -561,4 +561,21 @@ public abstract class NativeWindowFactory {
         }
         return null;            
     }
+    
+    /**
+     * Returns true if the given visualID is valid for further processing, i.e. OpenGL usage,
+     * otherwise return false.
+     * <p>
+     * On certain platforms, i.e. X11, a valid visualID is required at window creation.
+     * Other platforms may determine it later on, e.g. OSX and Windows. </p>
+     * <p>
+     * If the visualID is {@link VisualIDHolder#VID_UNDEFINED} and the platform requires it
+     * at creation time (see above), it is not valid for further processing.
+     * </p>
+     */
+    public static boolean isNativeVisualIDValidForProcessing(int visualID) {
+        return NativeWindowFactory.TYPE_X11 != NativeWindowFactory.getNativeWindowType(false) || 
+               VisualIDHolder.VID_UNDEFINED != visualID ;
+    }
+        
 }
diff --git a/src/nativewindow/classes/jogamp/nativewindow/macosx/OSXUtil.java b/src/nativewindow/classes/jogamp/nativewindow/macosx/OSXUtil.java
index 4767dff18..894084fce 100644
--- a/src/nativewindow/classes/jogamp/nativewindow/macosx/OSXUtil.java
+++ b/src/nativewindow/classes/jogamp/nativewindow/macosx/OSXUtil.java
@@ -28,6 +28,7 @@
 package jogamp.nativewindow.macosx;
 
 import javax.media.nativewindow.NativeWindowException;
+import javax.media.nativewindow.util.Insets;
 import javax.media.nativewindow.util.Point;
 
 import jogamp.nativewindow.Debug;
@@ -63,8 +64,37 @@ public class OSXUtil {
         return isNSView0(object);
     }
     
-    public static Point GetLocationOnScreen(long windowOrView, int src_x, int src_y) {
-      return (Point) GetLocationOnScreen0(windowOrView, src_x, src_y);
+    /**
+     * In case the <code>windowOrView</code> is top-level,
+     * you shall set <code>topLevel</code> to true where
+     * insets gets into account to compute the client position as follows:
+     * <pre>
+      if(topLevel) {
+          // top-level position -> client window position
+          final Insets insets = GetInsets(windowOrView);
+          los.setX(los.getX() + insets.getLeftWidth());
+          los.setY(los.getY() + insets.getTopHeight());
+      }
+     * </pre>
+     * @param windowOrView
+     * @param topLevel
+     * @param src_x
+     * @param src_y
+     * @return the client position
+     */
+    public static Point GetLocationOnScreen(long windowOrView, boolean topLevel, int src_x, int src_y) {      
+      final Point los = (Point) GetLocationOnScreen0(windowOrView, src_x, src_y);
+      if(topLevel) {
+          // top-level position -> client window position
+          final Insets insets = GetInsets(windowOrView);
+          los.setX(los.getX() + insets.getLeftWidth());
+          los.setY(los.getY() + insets.getTopHeight());
+      }
+      return los;
+    }
+    
+    public static Insets GetInsets(long windowOrView) {
+      return (Insets) GetInsets0(windowOrView);
     }
     
     public static long CreateNSWindow(int x, int y, int width, int height) {
@@ -135,6 +165,7 @@ public class OSXUtil {
     private static native boolean initIDs0();
     private static native boolean isNSView0(long object);
     private static native Object GetLocationOnScreen0(long windowOrView, int src_x, int src_y);
+    private static native Object GetInsets0(long windowOrView);
     private static native long CreateNSWindow0(int x, int y, int width, int height);
     private static native void DestroyNSWindow0(long nsWindow);
     private static native long GetNSView0(long nsWindow);
diff --git a/src/nativewindow/native/macosx/OSXmisc.m b/src/nativewindow/native/macosx/OSXmisc.m
index 37fa4c88f..2c853a43d 100644
--- a/src/nativewindow/native/macosx/OSXmisc.m
+++ b/src/nativewindow/native/macosx/OSXmisc.m
@@ -52,12 +52,18 @@
 static const char * const ClazzNameRunnable = "java/lang/Runnable";
 static jmethodID runnableRunID = NULL;
 
-static const char * const ClazzNamePoint = "javax/media/nativewindow/util/Point";
 static const char * const ClazzAnyCstrName = "<init>";
+
+static const char * const ClazzNamePoint = "javax/media/nativewindow/util/Point";
 static const char * const ClazzNamePointCstrSignature = "(II)V";
 static jclass pointClz = NULL;
 static jmethodID pointCstr = NULL;
 
+static const char * const ClazzNameInsets = "javax/media/nativewindow/util/Insets";
+static const char * const ClazzNameInsetsCstrSignature = "(IIII)V";
+static jclass insetsClz = NULL;
+static jmethodID insetsCstr = NULL;
+
 static int _initialized=0;
 
 JNIEXPORT jboolean JNICALL 
@@ -79,6 +85,21 @@ Java_jogamp_nativewindow_macosx_OSXUtil_initIDs0(JNIEnv *env, jclass _unused) {
                 ClazzNamePoint, ClazzAnyCstrName, ClazzNamePointCstrSignature);
         }
 
+        c = (*env)->FindClass(env, ClazzNameInsets);
+        if(NULL==c) {
+            NativewindowCommon_FatalError(env, "FatalError Java_jogamp_newt_driver_macosx_MacWindow_initIDs0: can't find %s", ClazzNameInsets);
+        }
+        insetsClz = (jclass)(*env)->NewGlobalRef(env, c);
+        (*env)->DeleteLocalRef(env, c);
+        if(NULL==insetsClz) {
+            NativewindowCommon_FatalError(env, "FatalError Java_jogamp_newt_driver_macosx_MacWindow_initIDs0: can't use %s", ClazzNameInsets);
+        }
+        insetsCstr = (*env)->GetMethodID(env, insetsClz, ClazzAnyCstrName, ClazzNameInsetsCstrSignature);
+        if(NULL==insetsCstr) {
+            NativewindowCommon_FatalError(env, "FatalError Java_jogamp_newt_driver_macosx_MacWindow_initIDs0: can't fetch %s.%s %s",
+                ClazzNameInsets, ClazzAnyCstrName, ClazzNameInsetsCstrSignature);
+        }
+
         c = (*env)->FindClass(env, ClazzNameRunnable);
         if(NULL==c) {
             NativewindowCommon_FatalError(env, "FatalError Java_jogamp_newt_driver_macosx_MacWindow_initIDs0: can't find %s", ClazzNameRunnable);
@@ -156,6 +177,49 @@ JNIEXPORT jobject JNICALL Java_jogamp_nativewindow_macosx_OSXUtil_GetLocationOnS
 
 /*
  * Class:     Java_jogamp_nativewindow_macosx_OSXUtil
+ * Method:    getInsets0
+ * Signature: (J)Ljavax/media/nativewindow/util/Insets;
+ */
+JNIEXPORT jobject JNICALL Java_jogamp_nativewindow_macosx_OSXUtil_GetInsets0
+  (JNIEnv *env, jclass unused, jlong winOrView)
+{
+    NSAutoreleasePool* pool = [[NSAutoreleasePool alloc] init];
+
+    NSObject *nsObj = (NSObject*) (intptr_t) winOrView;
+    NSWindow* win = NULL;
+    NSView* view = NULL;
+    jint il,ir,it,ib;
+
+    if( [nsObj isKindOfClass:[NSWindow class]] ) {
+        win = (NSWindow*) nsObj;
+        view = [win contentView];
+    } else if( nsObj != NULL && [nsObj isKindOfClass:[NSView class]] ) {
+        view = (NSView*) nsObj;
+        win = [view window];
+    } else {
+        NativewindowCommon_throwNewRuntimeException(env, "neither win not view %p\n", nsObj);
+    }
+
+    NSRect frameRect = [win frame];
+    NSRect contentRect = [win contentRectForFrameRect: frameRect];
+
+    // note: this is a simplistic implementation which doesn't take
+    // into account DPI and scaling factor
+    CGFloat l = contentRect.origin.x - frameRect.origin.x;
+    il = (jint)l;                                                     // l
+    ir = (jint)(frameRect.size.width - (contentRect.size.width + l)); // r
+    it = (jint)(frameRect.size.height - contentRect.size.height);     // t
+    ib = (jint)(contentRect.origin.y - frameRect.origin.y);           // b
+
+    jobject res = (*env)->NewObject(env, insetsClz, insetsCstr, il, ir, it, ib);
+
+    [pool release];
+
+    return res;
+}
+
+/*
+ * Class:     Java_jogamp_nativewindow_macosx_OSXUtil
  * Method:    CreateNSWindow0
  * Signature: (IIIIZ)J
  */
@@ -172,6 +236,12 @@ JNIEXPORT jlong JNICALL Java_jogamp_nativewindow_macosx_OSXUtil_CreateNSWindow0
                                            defer: YES];
     [myWindow setReleasedWhenClosed: YES]; // default
     [myWindow setPreservesContentDuringLiveResize: YES];
+    // Remove animations
+NS_DURING
+        // Available >= 10.7 - Removes default animations
+        [myWindow setAnimationBehavior: NSWindowAnimationBehaviorNone];
+NS_HANDLER
+NS_ENDHANDLER
 
     // invisible ..
     [myWindow setOpaque: NO];
@@ -229,7 +299,7 @@ JNIEXPORT jlong JNICALL Java_jogamp_nativewindow_macosx_OSXUtil_CreateCALayer0
     NSAutoreleasePool* pool = [[NSAutoreleasePool alloc] init];
 
     CALayer* layer = [[CALayer alloc] init];
-    DBG_PRINT("CALayer::CreateCALayer.0: %p %d/%d %dx%d (refcnt %d)\n", layer, x, y, width, height, (int)[layer retainCount]);
+    DBG_PRINT("CALayer::CreateCALayer.0: %p %d/%d %dx%d (refcnt %d)\n", layer, (int)x, (int)y, (int)width, (int)height, (int)[layer retainCount]);
     // avoid zero size
     if(0 == width) { width = 32; }
     if(0 == height) { height = 32; }
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/awt/NewtCanvasAWT.java b/src/newt/classes/com/jogamp/newt/awt/NewtCanvasAWT.java
index cd0e9aab6..6f0028a77 100644
--- a/src/newt/classes/com/jogamp/newt/awt/NewtCanvasAWT.java
+++ b/src/newt/classes/com/jogamp/newt/awt/NewtCanvasAWT.java
@@ -263,17 +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 */
@@ -306,13 +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");
@@ -360,7 +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);
     }
 
@@ -375,6 +393,12 @@ public class NewtCanvasAWT extends java.awt.Canvas implements WindowClosingProto
             ols.detachSurfaceLayer();
         }      
         reparentWindow(false, cont);
+        
+        if(null != jawtWindow) {
+            NewtFactoryAWT.destroyNativeWindow(jawtWindow);
+            jawtWindow=null;
+        }
+        
         super.removeNotify();
     }
 
@@ -382,14 +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()) {
@@ -413,7 +442,6 @@ 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).
@@ -422,10 +450,9 @@ public class NewtCanvasAWT extends java.awt.Canvas implements WindowClosingProto
           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());
       }
     }
 
@@ -451,7 +478,7 @@ public class NewtCanvasAWT extends java.awt.Canvas implements WindowClosingProto
                 NewtFactoryAWT.destroyNativeWindow(jawtWindow);
                 jawtWindow=null;
             }
-            newtChild.setVisible(false);            
+            newtChild.setVisible(false);
             newtChild.reparentWindow(null);
             newtChild.destroy();
             newtChild=null;
@@ -569,5 +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/opengl/GLWindow.java b/src/newt/classes/com/jogamp/newt/opengl/GLWindow.java
index 2205aec8e..d662a743a 100644
--- a/src/newt/classes/com/jogamp/newt/opengl/GLWindow.java
+++ b/src/newt/classes/com/jogamp/newt/opengl/GLWindow.java
@@ -480,7 +480,6 @@ public class GLWindow extends GLAutoDrawableBase implements GLAutoDrawable, Wind
             }
             if(Window.DEBUG_IMPLEMENTATION) {
                 System.err.println("GLWindow.setVisibleActionPost("+visible+", "+nativeWindowCreated+") "+WindowImpl.getThreadName()+", fin: dt "+ (System.nanoTime()-t0)/1e6 +"ms");
-                Thread.dumpStack(); // JAU
             }
         }
 
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/DisplayImpl.java b/src/newt/classes/jogamp/newt/DisplayImpl.java
index b10561c5b..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;
     }
diff --git a/src/newt/classes/jogamp/newt/WindowImpl.java b/src/newt/classes/jogamp/newt/WindowImpl.java
index b12e42680..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
      */
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/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/macosx/MacWindow.java b/src/newt/classes/jogamp/newt/driver/macosx/MacWindow.java
index 720d4ee4c..27d7a1679 100644
--- a/src/newt/classes/jogamp/newt/driver/macosx/MacWindow.java
+++ b/src/newt/classes/jogamp/newt/driver/macosx/MacWindow.java
@@ -150,7 +150,7 @@ public class MacWindow extends WindowImpl implements MutableSurface, DriverClear
             System.err.println("MacWindow: clearFocus() - requestFocusParent, isOffscreenInstance "+isOffscreenInstance);
         }
         if(!isOffscreenInstance) {
-            requestFocusParent0(getWindowHandle());
+            resignFocus0(getWindowHandle());
         } else {
             focusChanged(false, false);
         }
@@ -360,7 +360,6 @@ public class MacWindow extends WindowImpl implements MutableSurface, DriverClear
                 if(recreate && 0==surfaceHandle) {
                     throw new NativeWindowException("Internal Error - recreate, window but no view");
                 }
-                orderOut0(getWindowHandle());
                 close0(getWindowHandle());
                 setWindowHandle(0);
             } else {
@@ -397,7 +396,7 @@ public class MacWindow extends WindowImpl implements MutableSurface, DriverClear
     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 34d76a148..6a8c81f3d 100644
--- a/src/newt/classes/jogamp/newt/driver/windows/WindowsWindow.java
+++ b/src/newt/classes/jogamp/newt/driver/windows/WindowsWindow.java
@@ -151,8 +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) {
@@ -162,11 +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) {
@@ -177,6 +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/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/test/com/jogamp/opengl/test/junit/jogl/swt/TestNewtCanvasSWTGLn.java b/src/test/com/jogamp/opengl/test/junit/jogl/swt/TestNewtCanvasSWTGLn.java
new file mode 100644
index 000000000..6a27e6f27
--- /dev/null
+++ b/src/test/com/jogamp/opengl/test/junit/jogl/swt/TestNewtCanvasSWTGLn.java
@@ -0,0 +1,233 @@
+/**
+ * Copyright 2010 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.opengl.test.junit.jogl.swt;
+
+import javax.media.opengl.GLAutoDrawable;
+import javax.media.opengl.GLCapabilities;
+import javax.media.opengl.GLCapabilitiesImmutable;
+import javax.media.opengl.GLEventListener;
+import javax.media.opengl.GLProfile;
+
+import org.eclipse.swt.SWT;
+import org.eclipse.swt.layout.FillLayout;
+import org.eclipse.swt.widgets.Composite;
+import org.eclipse.swt.widgets.Display;
+import org.eclipse.swt.widgets.Shell;
+
+import org.junit.Assert;
+import org.junit.Assume;
+import org.junit.Before;
+import org.junit.BeforeClass;
+import org.junit.After;
+import org.junit.Test;
+
+import com.jogamp.nativewindow.swt.SWTAccessor;
+import com.jogamp.newt.opengl.GLWindow;
+import com.jogamp.newt.swt.NewtCanvasSWT;
+import com.jogamp.opengl.test.junit.jogl.demos.es2.GearsES2;
+import com.jogamp.opengl.test.junit.jogl.demos.es2.MultisampleDemoES2;
+import com.jogamp.opengl.test.junit.util.UITestCase;
+import com.jogamp.opengl.util.Animator;
+import com.jogamp.opengl.util.GLReadBufferUtil;
+import com.jogamp.opengl.util.texture.TextureIO;
+
+/**
+ * Tests that a basic SWT app can open without crashing under different GL profiles
+ * _and_ custom GLCapabilities. 
+ * <p> 
+ * Uses JOGL's NewtCanvasSWT, which allows to be a native container of a NEWT Window.<br/>
+ * This method allows utilizing custom GLCapability settings,
+ * independent from the already instantiated SWT visual.
+ * </p>
+ * <p>
+ * Note that {@link SWTAccessor#invoke(boolean, Runnable)} is still used to comply w/ 
+ * SWT running on Mac OSX, i.e. to enforce UI action on the main thread.
+ * </p>
+ */
+public class TestNewtCanvasSWTGLn extends UITestCase {
+
+    static int duration = 250;
+
+    static final int iwidth = 640;
+    static final int iheight = 480;
+
+    Display display = null;
+    Shell shell = null;
+    Composite composite = null;
+
+    @BeforeClass
+    public static void startup() {
+        System.out.println( "GLProfile " + GLProfile.glAvailabilityToString() );
+    }
+
+    @Before
+    public void init() {
+        SWTAccessor.invoke(true, new Runnable() {
+            public void run() {        
+                display = new Display();
+                Assert.assertNotNull( display );
+                shell = new Shell( display );
+                Assert.assertNotNull( shell );
+                shell.setLayout( new FillLayout() );
+                composite = new Composite( shell, SWT.NONE );
+                composite.setLayout( new FillLayout() );
+                Assert.assertNotNull( composite );
+            }});
+    }
+
+    @After
+    public void release() {
+        Assert.assertNotNull( display );
+        Assert.assertNotNull( shell );
+        Assert.assertNotNull( composite );
+        try {
+            SWTAccessor.invoke(true, new Runnable() {
+               public void run() {
+                composite.dispose();
+                shell.dispose();
+                display.dispose();
+               }});
+        }
+        catch( Throwable throwable ) {
+            throwable.printStackTrace();
+            Assume.assumeNoException( throwable );
+        }
+        display = null;
+        shell = null;
+        composite = null;
+    }
+
+    protected void runTestAGL( GLCapabilitiesImmutable caps, GLEventListener demo, 
+                               boolean postAttach, boolean useAnimator ) throws InterruptedException {
+        final GLReadBufferUtil screenshot = new GLReadBufferUtil(false, false);
+        
+        final GLWindow glWindow1 = GLWindow.create(caps);
+        Assert.assertNotNull(glWindow1);
+        Assert.assertEquals(false, glWindow1.isVisible());
+        Assert.assertEquals(false, glWindow1.isNativeValid());
+        Assert.assertNull(glWindow1.getParent());
+        glWindow1.addGLEventListener(demo);
+        glWindow1.addGLEventListener(new GLEventListener() {
+           int displayCount = 0;
+           public void init(final GLAutoDrawable drawable) { } 
+           public void reshape(final GLAutoDrawable drawable, final int x, final int y, final int width, final int height) { }
+           public void display(final GLAutoDrawable drawable) {
+              if(displayCount < 3) {
+                  snapshot(getSimpleTestName("."), displayCount++, null, drawable.getGL(), screenshot, TextureIO.PNG, null);
+              }
+           }
+           public void dispose(final GLAutoDrawable drawable) { }
+        });       
+        
+        final NewtCanvasSWT canvas1 = NewtCanvasSWT.create( composite, 0, postAttach ? null : glWindow1 );
+        Assert.assertNotNull( canvas1 );
+
+        SWTAccessor.invoke(true, new Runnable() {
+           public void run() {
+              shell.setText( getSimpleTestName(".") );
+              shell.setSize( 640, 480 );
+              shell.open();
+           }
+        });
+        
+        if(postAttach) {
+            canvas1.setNEWTChild(glWindow1);
+        }
+        
+        // canvas1.update();
+        
+        Animator anim;
+        if(useAnimator) {
+            anim = new Animator(glWindow1);
+            anim.start();
+        } else {
+            anim = null;
+        }
+        
+        long lStartTime = System.currentTimeMillis();
+        long lEndTime = lStartTime + duration;
+        try {
+            while( (System.currentTimeMillis() < lEndTime) && !canvas1.isDisposed() ) {
+                if( !display.readAndDispatch() ) {
+                    // blocks on linux .. display.sleep();
+                    Thread.sleep(10);
+                }
+            }
+        } catch( Throwable throwable ) {
+            throwable.printStackTrace();
+            Assume.assumeNoException( throwable );
+        }
+        if(null != anim) {
+            anim.stop();
+        }
+        
+        canvas1.dispose();
+    }
+
+    @Test
+    public void preAttach_WithAnimator() throws InterruptedException {
+        runTestAGL( new GLCapabilities(GLProfile.getGL2ES2()), new GearsES2(), false /* postAttach */, true /* animator */);
+    }
+
+    @Test
+    public void preAttach_NoAnimator() throws InterruptedException {
+        runTestAGL( new GLCapabilities(GLProfile.getGL2ES2()), new GearsES2(), false /* postAttach */, false /* animator */);
+    }
+
+    @Test
+    public void postAttach_WithAnimator() throws InterruptedException {
+        runTestAGL( new GLCapabilities(GLProfile.getGL2ES2()), new GearsES2(), true /* postAttach */, true /* animator */);
+    }
+    
+    @Test
+    public void test_MultisampleAndAlpha() throws InterruptedException {
+        GLCapabilities caps = new GLCapabilities(GLProfile.getGL2ES2());
+        caps.setSampleBuffers(true);
+        caps.setNumSamples(2);
+        runTestAGL( caps, new MultisampleDemoES2(true), false /* postAttach */, false /* animator */);
+    }
+
+    static int atoi(String a) {
+        int i=0;
+        try {
+            i = Integer.parseInt(a);
+        } catch (Exception ex) { ex.printStackTrace(); }
+        return i;
+    }
+
+    public static void main(String args[]) {
+        for(int i=0; i<args.length; i++) {
+            if(args[i].equals("-time")) {
+                duration = atoi(args[++i]);
+            }
+        }
+        System.out.println("durationPerTest: "+duration);
+        org.junit.runner.JUnitCore.main(TestNewtCanvasSWTGLn.class.getName());
+    }
+}
diff --git a/src/test/com/jogamp/opengl/test/junit/jogl/swt/TestSWTAccessor02GLn.java b/src/test/com/jogamp/opengl/test/junit/jogl/swt/TestSWTAccessor02GLn.java
deleted file mode 100644
index 2e225ec0e..000000000
--- a/src/test/com/jogamp/opengl/test/junit/jogl/swt/TestSWTAccessor02GLn.java
+++ /dev/null
@@ -1,278 +0,0 @@
-/**
- * Copyright 2010 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.opengl.test.junit.jogl.swt;
-
-import javax.media.opengl.GL2ES1;
-import javax.media.opengl.GLContext;
-import javax.media.opengl.GLDrawableFactory;
-import javax.media.opengl.GLProfile;
-
-import org.eclipse.swt.SWT;
-import org.eclipse.swt.events.ControlEvent;
-import org.eclipse.swt.events.ControlListener;
-import org.eclipse.swt.events.PaintEvent;
-import org.eclipse.swt.events.PaintListener;
-import org.eclipse.swt.graphics.Rectangle;
-import org.eclipse.swt.layout.FillLayout;
-import org.eclipse.swt.widgets.Composite;
-import org.eclipse.swt.widgets.Display;
-import org.eclipse.swt.widgets.Event;
-import org.eclipse.swt.widgets.Listener;
-import org.eclipse.swt.widgets.Shell;
-
-import org.junit.Assert;
-import org.junit.Assume;
-import org.junit.Before;
-import org.junit.BeforeClass;
-import org.junit.After;
-import org.junit.Test;
-
-import com.jogamp.nativewindow.swt.SWTAccessor;
-import com.jogamp.opengl.test.junit.jogl.demos.es1.OneTriangle;
-import com.jogamp.opengl.test.junit.util.UITestCase;
-import javax.media.nativewindow.AbstractGraphicsDevice;
-import javax.media.nativewindow.ProxySurface;
-import javax.media.opengl.GLCapabilities;
-import javax.media.opengl.GLDrawable;
-import org.eclipse.swt.widgets.Canvas;
-
-/**
- * Tests that a basic SWT app can open without crashing under different GL profiles. 
- * <p> 
- * Uses JOGL's SWTAccessor only.
- * </p>
- * @author Wade Walker, et.al.
- */
-public class TestSWTAccessor02GLn extends UITestCase {
-
-    static int duration = 250;
-
-    static final int iwidth = 640;
-    static final int iheight = 480;
-
-    Display display = null;
-    Shell shell = null;
-    Composite composite = null;
-
-    @BeforeClass
-    public static void startup() {
-        System.out.println( "GLProfile " + GLProfile.glAvailabilityToString() );
-    }
-
-    @Before
-    public void init() {
-        SWTAccessor.invoke(true, new Runnable() {
-            public void run() {        
-                display = new Display();
-                Assert.assertNotNull( display );
-                shell = new Shell( display );
-                Assert.assertNotNull( shell );
-                shell.setLayout( new FillLayout() );
-                composite = new Composite( shell, SWT.NONE );
-                composite.setLayout( new FillLayout() );
-                Assert.assertNotNull( composite );
-            }});        
-    }
-
-    @After
-    public void release() {
-        Assert.assertNotNull( display );
-        Assert.assertNotNull( shell );
-        Assert.assertNotNull( composite );
-        try {
-            SWTAccessor.invoke(true, new Runnable() {
-               public void run() {
-                composite.dispose();
-                shell.dispose();
-                display.dispose();
-               }});
-        }
-        catch( Throwable throwable ) {
-            throwable.printStackTrace();
-            Assume.assumeNoException( throwable );
-        }
-        display = null;
-        shell = null;
-        composite = null;
-    }
-    
-    protected void runTestAGL( GLProfile glprofile ) throws InterruptedException {
-        GLCapabilities caps = new GLCapabilities(glprofile);
-        GLDrawableFactory factory = GLDrawableFactory.getFactory(glprofile);
-        
-        // need SWT.NO_BACKGROUND to prevent SWT from clearing the window
-        // at the wrong times (we use glClear for this instead)
-        final Canvas canvas = new Canvas( composite, SWT.NO_BACKGROUND);        
-        Assert.assertNotNull( canvas );        
-        SWTAccessor.setRealized(canvas, true);
-        
-        AbstractGraphicsDevice device = SWTAccessor.getDevice(canvas);
-        long nativeWindowHandle = SWTAccessor.getWindowHandle(canvas);
-        System.err.println("*** device: " + device);
-        System.err.println("*** window handle: 0x" + Long.toHexString(nativeWindowHandle));
-        
-        final SWTUpstreamHook swtUpstreamHook = new SWTUpstreamHook(canvas);
-        canvas.addControlListener(swtUpstreamHook);
-        
-        final ProxySurface proxySurface = factory.createProxySurface(device, 0, nativeWindowHandle, caps, null, swtUpstreamHook);
-        Assert.assertNotNull( proxySurface );              
-        System.err.println("*** ProxySurface: " + proxySurface);
-        
-        final GLDrawable drawable = factory.createGLDrawable(proxySurface);
-        Assert.assertNotNull( drawable );
-        drawable.setRealized(true);
-        System.err.println("*** Drawable: " + drawable);
-        Assert.assertTrue( drawable.isRealized() );
-        
-        final GLContext glcontext = drawable.createContext(null);
-        // trigger native creation ..
-        if( GLContext.CONTEXT_NOT_CURRENT < glcontext.makeCurrent() ) {        
-            glcontext.release();
-        }
-        
-        final boolean[] sizeMissing = new boolean[] { false };
-        
-        // fix the viewport when the user resizes the window
-        canvas.addListener( SWT.Resize, new Listener() {
-            public void handleEvent( Event event ) {
-                Rectangle rectangle = canvas.getClientArea();
-                boolean glok=false;
-                if( GLContext.CONTEXT_NOT_CURRENT < glcontext.makeCurrent() ) {
-                    glok=true;
-                    GL2ES1 gl = glcontext.getGL().getGL2ES1();
-                    OneTriangle.setup( gl, rectangle.width, rectangle.height );
-                    glcontext.release();
-                } else {
-                    sizeMissing[0] = true;
-                }
-                System.err.println("resize: glok " + glok);
-            }
-        });
-
-        // draw the triangle when the OS tells us that any part of the window needs drawing
-        canvas.addPaintListener( new PaintListener() {
-            public void paintControl( PaintEvent paintevent ) {
-                Rectangle rectangle = canvas.getClientArea();
-                boolean glok=false;
-                if( GLContext.CONTEXT_NOT_CURRENT < glcontext.makeCurrent() ) {
-                    glok=true;
-                    GL2ES1 gl = glcontext.getGL().getGL2ES1();
-                    if(sizeMissing[0]) {
-                        OneTriangle.setup( gl, rectangle.width, rectangle.height);
-                        sizeMissing[0] = false;
-                    }
-                    OneTriangle.render( gl, rectangle.width, rectangle.height);
-                    drawable.swapBuffers();
-                    glcontext.release();
-                }
-                System.err.println("paint: glok " + glok);
-            }
-        });
-        
-        shell.setText( getClass().getName() );
-        shell.setSize( 640, 480 );
-        shell.open();
-
-        long lStartTime = System.currentTimeMillis();
-        long lEndTime = lStartTime + duration;
-        try {
-            while( (System.currentTimeMillis() < lEndTime) && !canvas.isDisposed() ) {
-                if( !display.readAndDispatch() ) {
-                    // blocks on linux .. display.sleep();
-                    Thread.sleep(10);
-                }
-            }
-        } catch( Throwable throwable ) {
-            throwable.printStackTrace();
-            Assume.assumeNoException( throwable );
-        }
-        glcontext.destroy();
-        drawable.setRealized(false);
-        canvas.dispose();
-    }
-    private static class SWTUpstreamHook implements ProxySurface.UpstreamSurfaceHook, ControlListener {
-        private Canvas c;
-        Rectangle clientArea;
-        public SWTUpstreamHook(Canvas c) {
-            this.c = c ;
-            this.clientArea = c.getClientArea();
-        }
-        @Override
-        public final void create(ProxySurface s) { /* nop */ }
-    
-        @Override
-        public final void destroy(ProxySurface s) { /* nop */ }
-    
-        @Override
-        public final int getWidth(ProxySurface s) {
-            return clientArea.width;
-        }    
-        @Override
-        public final int getHeight(ProxySurface s) {
-            return clientArea.width;
-        }
-        
-        @Override
-        public void controlResized(final ControlEvent arg0) {
-            clientArea = c.getClientArea();
-        }
-        @Override
-        public void controlMoved(ControlEvent e) {
-        }
-        @Override
-        public String toString() {
-            final String us_s = null != c ? c.toString() : "nil"; 
-            return "SETUpstreamSurfaceHook[upstream: "+us_s+"]";
-    }
-    };
-
-    @Test
-    public void test() throws InterruptedException {
-        GLProfile glprofile = GLProfile.getGL2ES1();
-        runTestAGL( glprofile );
-    }
-
-    static int atoi(String a) {
-        int i=0;
-        try {
-            i = Integer.parseInt(a);
-        } catch (Exception ex) { ex.printStackTrace(); }
-        return i;
-    }
-
-    public static void main(String args[]) {
-        for(int i=0; i<args.length; i++) {
-            if(args[i].equals("-time")) {
-                duration = atoi(args[++i]);
-            }
-        }
-        System.out.println("durationPerTest: "+duration);
-        org.junit.runner.JUnitCore.main(TestSWTAccessor02GLn.class.getName());
-    }
-}
diff --git a/src/test/com/jogamp/opengl/test/junit/jogl/swt/TestSWTJOGLGLCanvas01GLn.java b/src/test/com/jogamp/opengl/test/junit/jogl/swt/TestSWTJOGLGLCanvas01GLn.java
index 19e76419f..4ca1dae0d 100644
--- a/src/test/com/jogamp/opengl/test/junit/jogl/swt/TestSWTJOGLGLCanvas01GLn.java
+++ b/src/test/com/jogamp/opengl/test/junit/jogl/swt/TestSWTJOGLGLCanvas01GLn.java
@@ -49,8 +49,10 @@ import org.junit.Test;
 
 import com.jogamp.nativewindow.swt.SWTAccessor;
 import com.jogamp.opengl.swt.GLCanvas;
-import com.jogamp.opengl.test.junit.jogl.demos.es1.OneTriangle;
+import com.jogamp.opengl.test.junit.jogl.demos.es2.GearsES2;
 import com.jogamp.opengl.test.junit.util.UITestCase;
+import com.jogamp.opengl.util.GLReadBufferUtil;
+import com.jogamp.opengl.util.texture.TextureIO;
 
 /**
  * Tests that a basic SWT app can open without crashing under different GL profiles.
@@ -58,6 +60,9 @@ import com.jogamp.opengl.test.junit.util.UITestCase;
  * Uses JOGL's new SWT GLCanvas.
  * </p>
  * <p>
+ * Note: To employ custom GLCapabilities, NewtCanvasSWT shall be used.
+ * </p>
+ * <p>
  * Note that {@link SWTAccessor#invoke(boolean, Runnable)} is still used to comply w/ 
  * SWT running on Mac OSX, i.e. to enforce UI action on the main thread.
  * </p>
@@ -116,34 +121,32 @@ public class TestSWTJOGLGLCanvas01GLn extends UITestCase {
         composite = null;
     }
 
-    protected void runTestAGL( GLProfile glprofile ) throws InterruptedException {
-        // need SWT.NO_BACKGROUND to prevent SWT from clearing the window
-        // at the wrong times (we use glClear for this instead)
-        final GLCapabilitiesImmutable caps = new GLCapabilities( glprofile );
+    protected void runTestAGL( GLCapabilitiesImmutable caps, GLEventListener demo ) throws InterruptedException {
+        final GLReadBufferUtil screenshot = new GLReadBufferUtil(false, false);
         
-        final GLCanvas canvas = new GLCanvas( composite, 0, caps, null, null);
+        final GLCanvas canvas = GLCanvas.create( composite, 0, caps, null, null);
         Assert.assertNotNull( canvas );
 
+        canvas.addGLEventListener( demo );
         canvas.addGLEventListener(new GLEventListener() {
-           public void init(final GLAutoDrawable drawable) { 
-               System.err.println(Thread.currentThread().getName()+" - SWT Canvas - GLEventListener - init()");
-           }
-           public void reshape(final GLAutoDrawable drawable, final int x, final int y, final int width, final int height) {
-               System.err.println(Thread.currentThread().getName()+" - SWT Canvas - GLEventListener - reshape()");
-               OneTriangle.setup( drawable.getGL().getGL2(), width, height );
-           }                 
+           int displayCount = 0;
+           public void init(final GLAutoDrawable drawable) { } 
+           public void reshape(final GLAutoDrawable drawable, final int x, final int y, final int width, final int height) { }
            public void display(final GLAutoDrawable drawable) {
-                OneTriangle.render( drawable.getGL().getGL2(), drawable.getWidth(), drawable.getHeight());
+              if(displayCount < 3) {
+                  snapshot(getSimpleTestName("."), displayCount++, null, drawable.getGL(), screenshot, TextureIO.PNG, null);
+              }
            }
-           public void dispose(final GLAutoDrawable drawable) {
-               System.err.println(Thread.currentThread().getName()+" - SWT Canvas - GLEventListener - dispose()");
-           }         
-        });
+           public void dispose(final GLAutoDrawable drawable) { }
+        });       
        
-        shell.setText( getClass().getName() );
-        shell.setSize( 640, 480 );
-        shell.open();
-
+        SWTAccessor.invoke(true, new Runnable() {
+           public void run() {
+            shell.setText( getSimpleTestName(".") );
+            shell.setSize( 640, 480 );
+            shell.open();
+           } } );
+        
         long lStartTime = System.currentTimeMillis();
         long lEndTime = lStartTime + duration;
         try {
@@ -157,13 +160,15 @@ public class TestSWTJOGLGLCanvas01GLn extends UITestCase {
             throwable.printStackTrace();
             Assume.assumeNoException( throwable );
         }
-        canvas.dispose();
+        SWTAccessor.invoke(true, new Runnable() {
+           public void run() {
+               canvas.dispose();
+           } } );
     }
 
     @Test
     public void test() throws InterruptedException {
-        GLProfile glprofile = GLProfile.getGL2ES1();
-        runTestAGL( glprofile );
+        runTestAGL( new GLCapabilities(GLProfile.getGL2ES2()), new GearsES2() );
     }
 
     static int atoi(String a) {
diff --git a/src/test/com/jogamp/opengl/test/junit/newt/parenting/TestParenting01aSWT.java b/src/test/com/jogamp/opengl/test/junit/newt/parenting/TestParenting01aSWT.java
new file mode 100644
index 000000000..11aef7c24
--- /dev/null
+++ b/src/test/com/jogamp/opengl/test/junit/newt/parenting/TestParenting01aSWT.java
@@ -0,0 +1,210 @@
+/**
+ * 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.opengl.test.junit.newt.parenting;
+
+import java.io.IOException;
+import java.lang.reflect.InvocationTargetException;
+
+import javax.media.opengl.GLCapabilities;
+import javax.media.opengl.GLEventListener;
+
+import org.eclipse.swt.SWT;
+import org.eclipse.swt.layout.FillLayout;
+import org.eclipse.swt.widgets.Composite;
+import org.eclipse.swt.widgets.Display;
+import org.eclipse.swt.widgets.Shell;
+import org.junit.After;
+import org.junit.Assert;
+import org.junit.Assume;
+import org.junit.Before;
+import org.junit.BeforeClass;
+import org.junit.Test;
+
+import com.jogamp.nativewindow.swt.SWTAccessor;
+import com.jogamp.newt.Window;
+import com.jogamp.newt.opengl.GLWindow;
+import com.jogamp.newt.swt.NewtCanvasSWT;
+import com.jogamp.opengl.test.junit.jogl.demos.es2.RedSquareES2;
+import com.jogamp.opengl.test.junit.util.MiscUtils;
+import com.jogamp.opengl.test.junit.util.UITestCase;
+
+/**
+ * Simple visibility test ..
+ */
+public class TestParenting01aSWT extends UITestCase {
+    static int width, height;
+    static long durationPerTest = 800;
+    static GLCapabilities glCaps;
+
+    Display display = null;
+    Shell shell = null;
+    Composite composite1 = null;
+    
+    @BeforeClass
+    public static void initClass() {
+        width  = 640;
+        height = 480;
+        glCaps = new GLCapabilities(null);
+    }
+
+    @Before
+    public void init() {
+        SWTAccessor.invoke(true, new Runnable() {
+            public void run() {        
+                display = new Display();
+                Assert.assertNotNull( display );
+                shell = new Shell( display );
+                Assert.assertNotNull( shell );
+                shell.setLayout( new FillLayout() );
+                composite1 = new Composite( shell, SWT.NONE );
+                composite1.setLayout( new FillLayout() );
+                Assert.assertNotNull( composite1 );
+            }});
+    }
+    
+    @After
+    public void release() {
+        Assert.assertNotNull( display );
+        Assert.assertNotNull( shell );
+        Assert.assertNotNull( composite1 );
+        try {
+            SWTAccessor.invoke(true, new Runnable() {
+               public void run() {
+                composite1.dispose();
+                shell.dispose();
+                display.dispose();
+               }});
+        }
+        catch( Throwable throwable ) {
+            throwable.printStackTrace();
+            Assume.assumeNoException( throwable );
+        }
+        display = null;
+        shell = null;
+        composite1 = null;
+    }
+    
+    @Test
+    public void testWindowParenting01CreateVisibleDestroy1() throws InterruptedException, InvocationTargetException {
+
+        GLWindow glWindow1 = GLWindow.create(glCaps);
+        Assert.assertNotNull(glWindow1);
+        Assert.assertEquals(false, glWindow1.isVisible());
+        Assert.assertEquals(false, glWindow1.isNativeValid());
+        Assert.assertNull(glWindow1.getParent());
+        glWindow1.setTitle("testWindowParenting01CreateVisibleDestroy");
+        GLEventListener demo1 = new RedSquareES2();
+        setDemoFields(demo1, glWindow1, false);
+        glWindow1.addGLEventListener(demo1);
+
+        final NewtCanvasSWT canvas1 = NewtCanvasSWT.create( composite1, 0, glWindow1 );
+        Assert.assertNotNull(canvas1);
+        Assert.assertEquals(false, glWindow1.isVisible());
+        Assert.assertEquals(false, glWindow1.isNativeValid());
+        Assert.assertNull(glWindow1.getParent());
+
+        SWTAccessor.invoke(true, new Runnable() {
+           public void run() {
+              shell.setText( getSimpleTestName(".") );
+              shell.setSize( 640, 480 );
+              shell.open();
+           }
+        });
+        
+        // visible test
+        Assert.assertEquals(canvas1.getNativeWindow(),glWindow1.getParent());
+
+        for(int i=0; i*10<durationPerTest; i++) {
+            if( !display.readAndDispatch() ) {
+                // blocks on linux .. display.sleep();
+                Thread.sleep(10);
+            }
+        }
+
+        SWTAccessor.invoke(true, new Runnable() {
+           public void run() {
+               canvas1.setVisible(false);
+           }
+        });
+        Assert.assertEquals(true, glWindow1.isNativeValid());
+
+        SWTAccessor.invoke(true, new Runnable() {
+           public void run() {
+               canvas1.setVisible(true);
+           }
+        });
+        Assert.assertEquals(true, glWindow1.isNativeValid());
+
+        canvas1.dispose();
+
+        Assert.assertEquals(false, glWindow1.isNativeValid());
+    }
+
+    public static void setDemoFields(GLEventListener demo, GLWindow glWindow, boolean debug) {
+        Assert.assertNotNull(demo);
+        Assert.assertNotNull(glWindow);
+        Window window = glWindow.getDelegatedWindow();
+        if(debug) {
+            MiscUtils.setFieldIfExists(demo, "glDebug", true);
+            MiscUtils.setFieldIfExists(demo, "glTrace", true);
+        }
+        if(!MiscUtils.setFieldIfExists(demo, "window", window)) {
+            MiscUtils.setFieldIfExists(demo, "glWindow", glWindow);
+        }
+    }
+
+    static int atoi(String a) {
+        int i=0;
+        try {
+            i = Integer.parseInt(a);
+        } catch (Exception ex) { ex.printStackTrace(); }
+        return i;
+    }
+
+    public static void main(String args[]) throws IOException {
+        for(int i=0; i<args.length; i++) {
+            if(args[i].equals("-time")) {
+                durationPerTest = atoi(args[++i]);
+            }
+        }
+        String tstname = TestParenting01aSWT.class.getName();
+        org.apache.tools.ant.taskdefs.optional.junit.JUnitTestRunner.main(new String[] {
+            tstname,
+            "filtertrace=true",
+            "haltOnError=false",
+            "haltOnFailure=false",
+            "showoutput=true",
+            "outputtoformatters=true",
+            "logfailedtests=true",
+            "logtestlistenerevents=true",
+            "formatter=org.apache.tools.ant.taskdefs.optional.junit.PlainJUnitResultFormatter",
+            "formatter=org.apache.tools.ant.taskdefs.optional.junit.XMLJUnitResultFormatter,TEST-"+tstname+".xml" } );
+    }
+
+}
diff --git a/src/test/com/jogamp/opengl/test/junit/newt/parenting/TestParenting04AWT.java b/src/test/com/jogamp/opengl/test/junit/newt/parenting/TestParenting04AWT.java
new file mode 100644
index 000000000..09b6d048c
--- /dev/null
+++ b/src/test/com/jogamp/opengl/test/junit/newt/parenting/TestParenting04AWT.java
@@ -0,0 +1,239 @@
+/**
+ * Copyright 2010 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.opengl.test.junit.newt.parenting;
+
+import java.awt.BorderLayout;
+import java.awt.Button;
+import java.awt.Frame;
+import java.io.IOException;
+import java.lang.reflect.InvocationTargetException;
+
+import javax.media.opengl.GLCapabilities;
+import javax.media.opengl.GLEventListener;
+import javax.swing.SwingUtilities;
+
+import org.junit.Assert;
+import org.junit.BeforeClass;
+import org.junit.Test;
+
+import com.jogamp.newt.Window;
+import com.jogamp.newt.awt.NewtCanvasAWT;
+import com.jogamp.newt.opengl.GLWindow;
+import com.jogamp.opengl.test.junit.jogl.demos.es2.GearsES2;
+import com.jogamp.opengl.test.junit.jogl.demos.es2.RedSquareES2;
+import com.jogamp.opengl.test.junit.util.MiscUtils;
+import com.jogamp.opengl.test.junit.util.UITestCase;
+import com.jogamp.opengl.util.Animator;
+
+/**
+ * Using {@link NewtCanvasAWT#setNEWTChild(Window)} for reparenting, i.e. NEWT/AWT hopping
+ */
+public class TestParenting04AWT extends UITestCase {
+    static int width, height;
+    static long durationPerTest = 800;
+    static GLCapabilities glCaps;
+
+    @BeforeClass
+    public static void initClass() {
+        width  = 400;
+        height = 400;
+        glCaps = new GLCapabilities(null);
+    }
+
+    @Test
+    public void winHopFrame2FrameDirectHop() throws InterruptedException, InvocationTargetException {
+        // Will produce some artifacts .. resizing etc
+        winHopFrame2Frame(false);
+    }
+    
+    @Test
+    public void winHopFrame2FrameDetachFirst() throws InterruptedException, InvocationTargetException {
+        // Note: detaching first setNEWTChild(null) is much cleaner visually 
+        winHopFrame2Frame(true);
+    }
+    
+    protected void winHopFrame2Frame(final boolean detachFirst) throws InterruptedException, InvocationTargetException {
+        final GLWindow glWindow1 = GLWindow.create(glCaps);
+        GLEventListener demo1 = new RedSquareES2();
+        setDemoFields(demo1, glWindow1, false);
+        glWindow1.addGLEventListener(demo1);
+        Animator anim1 = new Animator(glWindow1);
+
+        final GLWindow glWindow2 = GLWindow.create(glCaps);
+        GLEventListener demo2 = new GearsES2();
+        setDemoFields(demo2, glWindow2, false);
+        glWindow2.addGLEventListener(demo2);
+        Animator anim2 = new Animator(glWindow2);
+        
+        final NewtCanvasAWT canvas1 = new NewtCanvasAWT(glWindow1);
+        final NewtCanvasAWT canvas2 = new NewtCanvasAWT(glWindow2);
+
+        final Frame frame1 = new Frame("AWT Parent Frame");
+        frame1.setLayout(new BorderLayout());
+        frame1.add(new Button("North"), BorderLayout.NORTH);
+        frame1.add(new Button("South"), BorderLayout.SOUTH);
+        frame1.add(new Button("East"), BorderLayout.EAST);
+        frame1.add(new Button("West"), BorderLayout.WEST);
+        frame1.setSize(width, height);
+        frame1.setLocation(0, 0);
+        SwingUtilities.invokeAndWait(new Runnable() {
+           public void run() {
+               frame1.setVisible(true);
+               frame1.validate();
+           }
+        });
+
+        SwingUtilities.invokeAndWait(new Runnable() {
+           public void run() {
+               frame1.add(canvas1, BorderLayout.CENTER);
+               frame1.validate();
+           }
+        });
+        Assert.assertEquals(canvas1.getNativeWindow(),glWindow1.getParent());
+        
+        final Frame frame2 = new Frame("AWT Parent Frame");
+        frame2.setLayout(new BorderLayout());
+        frame2.add(new Button("North"), BorderLayout.NORTH);
+        frame2.add(new Button("South"), BorderLayout.SOUTH);
+        frame2.add(new Button("East"), BorderLayout.EAST);
+        frame2.add(new Button("West"), BorderLayout.WEST);
+        frame2.setSize(width, height);
+        frame2.setLocation(width+50, 0);
+        SwingUtilities.invokeAndWait(new Runnable() {
+           public void run() {
+               frame2.setVisible(true);
+               frame2.validate();
+           }
+        });
+
+        SwingUtilities.invokeAndWait(new Runnable() {
+           public void run() {
+               frame2.add(canvas2, BorderLayout.CENTER);
+               frame2.validate();
+           }
+        });
+        Assert.assertEquals(canvas2.getNativeWindow(),glWindow2.getParent());
+
+        anim1.start();
+        anim2.start();
+        
+        int state;
+        for(state=0; state<3; state++) {
+            Thread.sleep(durationPerTest);
+            switch(state) {
+                case 0:
+                    SwingUtilities.invokeAndWait(new Runnable() {
+                       public void run() {
+                           // 1 -> 2
+                           if(detachFirst) {
+                               canvas1.setNEWTChild(null);
+                               canvas2.setNEWTChild(null);                               
+                           } else {
+                               canvas2.setNEWTChild(null);  // free g2 of w2
+                           }
+                           canvas1.setNEWTChild(glWindow2); // put g2 -> w1. free g1 of w1
+                           canvas2.setNEWTChild(glWindow1); // put g1 -> w2
+                           frame1.validate();
+                           frame2.validate();
+                       }
+                    });
+                    break;
+                case 1:
+                    SwingUtilities.invokeAndWait(new Runnable() {
+                       public void run() {
+                           // 2 -> 1
+                           if(detachFirst) {
+                               canvas1.setNEWTChild(null);
+                               canvas2.setNEWTChild(null);                               
+                           } else {
+                               canvas2.setNEWTChild(null);
+                           }
+                           canvas1.setNEWTChild(glWindow1);
+                           canvas2.setNEWTChild(glWindow2);
+                           frame1.validate();
+                           frame2.validate();
+                       }
+                    });
+                    break;
+            }
+        }
+
+        SwingUtilities.invokeAndWait(new Runnable() {
+           public void run() {
+                frame1.dispose();
+                frame2.dispose();
+           } } );
+        glWindow1.destroy();
+        glWindow2.destroy();
+        Assert.assertEquals(false, glWindow1.isNativeValid());
+        Assert.assertEquals(false, glWindow2.isNativeValid());        
+    }
+
+    public static void setDemoFields(GLEventListener demo, GLWindow glWindow, boolean debug) {
+        Assert.assertNotNull(demo);
+        Assert.assertNotNull(glWindow);
+        Window window = glWindow.getDelegatedWindow();
+        if(debug) {
+            MiscUtils.setFieldIfExists(demo, "glDebug", true);
+            MiscUtils.setFieldIfExists(demo, "glTrace", true);
+        }
+        if(!MiscUtils.setFieldIfExists(demo, "window", window)) {
+            MiscUtils.setFieldIfExists(demo, "glWindow", glWindow);
+        }
+    }
+
+    static int atoi(String a) {
+        int i=0;
+        try {
+            i = Integer.parseInt(a);
+        } catch (Exception ex) { ex.printStackTrace(); }
+        return i;
+    }
+
+    public static void main(String args[]) throws IOException {
+        for(int i=0; i<args.length; i++) {
+            if(args[i].equals("-time")) {
+                durationPerTest = atoi(args[++i]);
+            }
+        }
+        String tstname = TestParenting04AWT.class.getName();
+        org.apache.tools.ant.taskdefs.optional.junit.JUnitTestRunner.main(new String[] {
+            tstname,
+            "filtertrace=true",
+            "haltOnError=false",
+            "haltOnFailure=false",
+            "showoutput=true",
+            "outputtoformatters=true",
+            "logfailedtests=true",
+            "logtestlistenerevents=true",
+            "formatter=org.apache.tools.ant.taskdefs.optional.junit.PlainJUnitResultFormatter",
+            "formatter=org.apache.tools.ant.taskdefs.optional.junit.XMLJUnitResultFormatter,TEST-"+tstname+".xml" } );
+    }
+
+}
diff --git a/src/test/com/jogamp/opengl/test/junit/newt/parenting/TestParenting04SWT.java b/src/test/com/jogamp/opengl/test/junit/newt/parenting/TestParenting04SWT.java
new file mode 100644
index 000000000..14a36c573
--- /dev/null
+++ b/src/test/com/jogamp/opengl/test/junit/newt/parenting/TestParenting04SWT.java
@@ -0,0 +1,264 @@
+/**
+ * Copyright 2010 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.opengl.test.junit.newt.parenting;
+
+import java.io.IOException;
+import java.lang.reflect.InvocationTargetException;
+
+import javax.media.opengl.GLCapabilities;
+import javax.media.opengl.GLEventListener;
+
+import org.eclipse.swt.SWT;
+import org.eclipse.swt.layout.FillLayout;
+import org.eclipse.swt.widgets.Composite;
+import org.eclipse.swt.widgets.Display;
+import org.eclipse.swt.widgets.Shell;
+import org.junit.After;
+import org.junit.Assert;
+import org.junit.Assume;
+import org.junit.Before;
+import org.junit.BeforeClass;
+import org.junit.Test;
+
+import com.jogamp.nativewindow.swt.SWTAccessor;
+import com.jogamp.newt.Window;
+import com.jogamp.newt.opengl.GLWindow;
+import com.jogamp.newt.swt.NewtCanvasSWT;
+import com.jogamp.opengl.test.junit.jogl.demos.es2.GearsES2;
+import com.jogamp.opengl.test.junit.jogl.demos.es2.RedSquareES2;
+import com.jogamp.opengl.test.junit.util.MiscUtils;
+import com.jogamp.opengl.test.junit.util.UITestCase;
+import com.jogamp.opengl.util.Animator;
+
+/**
+ * Using {@link NewtCanvasSWT#setNEWTChild(Window)} for reparenting, i.e. NEWT/AWT hopping
+ */
+public class TestParenting04SWT extends UITestCase {
+    static int width, height;
+    static long durationPerTest = 800;
+    static GLCapabilities glCaps;
+
+    Display display = null;
+    Shell shell1 = null;
+    Shell shell2 = null;
+    Composite composite1 = null;
+    Composite composite2 = null;
+    
+    @BeforeClass
+    public static void initClass() {
+        width  = 400;
+        height = 400;
+        glCaps = new GLCapabilities(null);
+    }
+
+    @Before
+    public void init() {
+        SWTAccessor.invoke(true, new Runnable() {
+            public void run() {        
+                display = new Display();
+                Assert.assertNotNull( display );
+                
+                shell1 = new Shell( display );
+                Assert.assertNotNull( shell1 );
+                shell1.setLayout( new FillLayout() );
+                composite1 = new Composite( shell1, SWT.NONE );
+                composite1.setLayout( new FillLayout() );
+                Assert.assertNotNull( composite1 );
+                
+                shell2 = new Shell( display );
+                Assert.assertNotNull( shell2 );
+                shell2.setLayout( new FillLayout() );
+                composite2 = new Composite( shell2, SWT.NONE );
+                composite2.setLayout( new FillLayout() );
+                Assert.assertNotNull( composite2 );
+            }});
+    }
+    
+    @After
+    public void release() {
+        Assert.assertNotNull( display );
+        Assert.assertNotNull( shell1 );
+        Assert.assertNotNull( shell2 );
+        Assert.assertNotNull( composite1 );
+        Assert.assertNotNull( composite2 );
+        try {
+            SWTAccessor.invoke(true, new Runnable() {
+               public void run() {
+                composite1.dispose();
+                composite2.dispose();
+                shell1.dispose();
+                shell2.dispose();
+                display.dispose();
+               }});
+        }
+        catch( Throwable throwable ) {
+            throwable.printStackTrace();
+            Assume.assumeNoException( throwable );
+        }
+        display = null;
+        shell1 = null;
+        shell2 = null;
+        composite1 = null;
+        composite2 = null;
+    }
+    
+    @Test
+    public void winHopFrame2FrameDirectHop() throws InterruptedException, InvocationTargetException {
+        // Will produce some artifacts .. resizing etc
+        winHopFrame2Frame(false);
+    }
+    
+    @Test
+    public void winHopFrame2FrameDetachFirst() throws InterruptedException, InvocationTargetException {
+        // Note: detaching first setNEWTChild(null) is much cleaner visually 
+        winHopFrame2Frame(true);
+    }
+    
+    protected void winHopFrame2Frame(final boolean detachFirst) throws InterruptedException, InvocationTargetException {
+        final GLWindow glWindow1 = GLWindow.create(glCaps);
+        GLEventListener demo1 = new RedSquareES2();
+        setDemoFields(demo1, glWindow1, false);
+        glWindow1.addGLEventListener(demo1);
+        Animator anim1 = new Animator(glWindow1);
+        
+        final GLWindow glWindow2 = GLWindow.create(glCaps);
+        GLEventListener demo2 = new GearsES2();
+        setDemoFields(demo2, glWindow2, false);
+        glWindow2.addGLEventListener(demo2);
+        Animator anim2 = new Animator(glWindow2);
+
+        final NewtCanvasSWT canvas1 = NewtCanvasSWT.create( composite1, 0, glWindow1 );
+        final NewtCanvasSWT canvas2 = NewtCanvasSWT.create( composite2, 0, glWindow2 );
+    
+        SWTAccessor.invoke(true, new Runnable() {
+           public void run() {
+              shell1.setText( getSimpleTestName(".")+"-Win1" );
+              shell1.setSize( width, height);
+              shell1.setLocation(0, 0);
+              shell1.open();
+              shell2.setText( getSimpleTestName(".")+"-Win2" );
+              shell2.setSize( width, height);
+              shell2.setLocation(width + 50, 0);
+              shell2.open();
+           }
+        });        
+        Assert.assertEquals(canvas1.getNativeWindow(),glWindow1.getParent());
+        Assert.assertEquals(canvas2.getNativeWindow(),glWindow2.getParent());
+
+        anim1.start();
+        anim2.start();
+        
+        int state;
+        for(state=0; state<3; state++) {
+            for(int i=0; i*10<durationPerTest; i++) {
+                if( !display.readAndDispatch() ) {
+                    // blocks on linux .. display.sleep();
+                    Thread.sleep(10);
+                }
+            }
+            switch(state) {
+                case 0:
+                    SWTAccessor.invoke(true, new Runnable() {
+                       public void run() {
+                           // 1 -> 2
+                           if(detachFirst) {
+                               canvas1.setNEWTChild(null);
+                               canvas2.setNEWTChild(null);                               
+                           } else {
+                               canvas2.setNEWTChild(null);  // free g2 of w2
+                           }
+                           canvas1.setNEWTChild(glWindow2); // put g2 -> w1. free g1 of w1
+                           canvas2.setNEWTChild(glWindow1); // put g1 -> w2
+                       } } );
+                    break;
+                case 1:
+                    SWTAccessor.invoke(true, new Runnable() {
+                       public void run() {
+                           // 2 -> 1
+                           if(detachFirst) {
+                               canvas1.setNEWTChild(null);
+                               canvas2.setNEWTChild(null);                               
+                           } else {
+                               canvas2.setNEWTChild(null);
+                           }
+                           canvas1.setNEWTChild(glWindow1);
+                           canvas2.setNEWTChild(glWindow2);
+                       } } );
+                    break;
+            }
+        }
+
+        canvas1.dispose();
+        canvas2.dispose();
+        Assert.assertEquals(false, glWindow1.isNativeValid());
+        Assert.assertEquals(false, glWindow2.isNativeValid());        
+    }
+
+    public static void setDemoFields(GLEventListener demo, GLWindow glWindow, boolean debug) {
+        Assert.assertNotNull(demo);
+        Assert.assertNotNull(glWindow);
+        Window window = glWindow.getDelegatedWindow();
+        if(debug) {
+            MiscUtils.setFieldIfExists(demo, "glDebug", true);
+            MiscUtils.setFieldIfExists(demo, "glTrace", true);
+        }
+        if(!MiscUtils.setFieldIfExists(demo, "window", window)) {
+            MiscUtils.setFieldIfExists(demo, "glWindow", glWindow);
+        }
+    }
+
+    static int atoi(String a) {
+        int i=0;
+        try {
+            i = Integer.parseInt(a);
+        } catch (Exception ex) { ex.printStackTrace(); }
+        return i;
+    }
+
+    public static void main(String args[]) throws IOException {
+        for(int i=0; i<args.length; i++) {
+            if(args[i].equals("-time")) {
+                durationPerTest = atoi(args[++i]);
+            }
+        }
+        String tstname = TestParenting04SWT.class.getName();
+        org.apache.tools.ant.taskdefs.optional.junit.JUnitTestRunner.main(new String[] {
+            tstname,
+            "filtertrace=true",
+            "haltOnError=false",
+            "haltOnFailure=false",
+            "showoutput=true",
+            "outputtoformatters=true",
+            "logfailedtests=true",
+            "logtestlistenerevents=true",
+            "formatter=org.apache.tools.ant.taskdefs.optional.junit.PlainJUnitResultFormatter",
+            "formatter=org.apache.tools.ant.taskdefs.optional.junit.XMLJUnitResultFormatter,TEST-"+tstname+".xml" } );
+    }
+
+}