3 files changed, 47 insertions, 24 deletions

diff --git a/src/newt/classes/jogamp/newt/DefaultEDTUtil.java b/src/newt/classes/jogamp/newt/DefaultEDTUtil.java
index fd757fba6..bdbe96070 100644
--- a/src/newt/classes/jogamp/newt/DefaultEDTUtil.java
+++ b/src/newt/classes/jogamp/newt/DefaultEDTUtil.java
@@ -340,7 +340,7 @@ public class DefaultEDTUtil implements EDTUtil {
                     }
                 }
                 if(DEBUG) {
-                    System.err.println(getName()+": EDT run() EXIT "+ getName()+", "+error);
+                    System.err.println(getName()+": EDT run() EXIT "+ getName()+", exception: "+error);
                 }
                 if(null!=error) {
                     throw error;
diff --git a/src/newt/classes/jogamp/newt/DisplayImpl.java b/src/newt/classes/jogamp/newt/DisplayImpl.java
index a0bbcc264..b10561c5b 100644
--- a/src/newt/classes/jogamp/newt/DisplayImpl.java
+++ b/src/newt/classes/jogamp/newt/DisplayImpl.java
@@ -355,24 +355,39 @@ public abstract class DisplayImpl extends Display {
     DispatchMessagesRunnable dispatchMessagesRunnable = new DispatchMessagesRunnable();
 
     final void dispatchMessage(final NEWTEventTask eventTask) {
-        NEWTEvent event = eventTask.get();
-        if(null == event) {
-            // Ooops ?
-            System.err.println("Warning: event of eventTask is NULL");
-            Thread.dumpStack();
-            return;
-        }
-        Object source = event.getSource();
-        if(source instanceof NEWTEventConsumer) {
-            NEWTEventConsumer consumer = (NEWTEventConsumer) source ;
-            if(!consumer.consumeEvent(event)) {
-                // enqueue for later execution
-                enqueueEvent(false, event);
+        final NEWTEvent event = eventTask.get();
+        try { 
+            if(null == event) {
+                // Ooops ?
+                System.err.println("Warning: event of eventTask is NULL");
+                Thread.dumpStack();
+                return;
+            }
+            final Object source = event.getSource();        
+            if(source instanceof NEWTEventConsumer) {
+                final NEWTEventConsumer consumer = (NEWTEventConsumer) source ;
+                if(!consumer.consumeEvent(event)) {
+                    // enqueue for later execution
+                    enqueueEvent(false, event);
+                }
+            } else {
+                throw new RuntimeException("Event source not NEWT: "+source.getClass().getName()+", "+source);
+            }
+        } catch (Throwable t) {
+            final RuntimeException re;
+            if(t instanceof RuntimeException) {
+                re = (RuntimeException) t;
+            } else {
+                re = new RuntimeException(t);
+            }
+            if( eventTask.isCallerWaiting() ) {
+                // propagate exception to caller
+                eventTask.setException(re);
+            } else {
+                throw re;
             }
-        } else {
-            throw new RuntimeException("Event source not NEWT: "+source.getClass().getName()+", "+source);
         }
-        eventTask.notifyIssuer();        
+        eventTask.notifyCaller();        
     }
     
     public void dispatchMessages() {
@@ -423,8 +438,8 @@ public abstract class DisplayImpl extends Display {
             return;
         }
         
-        Object lock = new Object();
-        NEWTEventTask eTask = new NEWTEventTask(e, wait?lock:null);
+        final Object lock = new Object();
+        final NEWTEventTask eTask = new NEWTEventTask(e, wait?lock:null);
         synchronized(lock) {
             synchronized(eventsLock) {
                 events.add(eTask);
@@ -437,7 +452,10 @@ public abstract class DisplayImpl extends Display {
                 } catch (InterruptedException ie) {
                     throw new RuntimeException(ie);
                 }
-            }
+                if( null != eTask.getException() ) {
+                    throw eTask.getException();
+                }
+            }            
         }
     }
 
diff --git a/src/newt/classes/jogamp/newt/event/NEWTEventTask.java b/src/newt/classes/jogamp/newt/event/NEWTEventTask.java
index fae6560b4..93d5e2fb9 100644
--- a/src/newt/classes/jogamp/newt/event/NEWTEventTask.java
+++ b/src/newt/classes/jogamp/newt/event/NEWTEventTask.java
@@ -35,17 +35,22 @@ import com.jogamp.newt.event.NEWTEvent;
  * which notifies after sending the event for the <code>invokeAndWait()</code> semantics.
  */
 public class NEWTEventTask {
-    NEWTEvent event;
-    Object notifyObject;
+    private NEWTEvent event;
+    private Object notifyObject;
+    private RuntimeException exception;
 
     public NEWTEventTask(NEWTEvent event, Object notifyObject) {
         this.event = event ;
         this.notifyObject = notifyObject ;
+        this.exception = null;
     }
 
-    public NEWTEvent get() { return event; }
+    public final NEWTEvent get() { return event; }
+    public final void setException(RuntimeException e) { exception = e; }
+    public final RuntimeException getException() { return exception; }
+    public final boolean isCallerWaiting() { return null != notifyObject; }
 
-    public void notifyIssuer() {
+    public void notifyCaller() {
         if(null != notifyObject) {
             synchronized (notifyObject) {
                 notifyObject.notifyAll();