diff --git a/examples/osgcluster/osgcluster.cpp b/examples/osgcluster/osgcluster.cpp
index 8a42bea82..c78c4db8e 100644
--- a/examples/osgcluster/osgcluster.cpp
+++ b/examples/osgcluster/osgcluster.cpp
@@ -408,6 +408,22 @@ void CameraPacket::readEventQueue(osgViewer::Viewer& viewer)
 {
     _events.clear();
 
+    osgViewer::ViewerBase::Contexts contexts;
+    viewer.getContexts(contexts);   
+
+    for(osgViewer::ViewerBase::Contexts::iterator citr =contexts.begin();  citr != contexts.end(); ++citr)
+    {
+        osgGA::EventQueue::Events gw_events;
+
+        osgViewer::GraphicsWindow* gw = dynamic_cast<osgViewer::GraphicsWindow*>(*citr);
+        if (gw)
+        {
+            gw->checkEvents();
+            gw->getEventQueue()->copyEvents(gw_events);
+        }
+        _events.insert(_events.end(), gw_events.begin(), gw_events.end());
+    }
+    
     viewer.getEventQueue()->copyEvents(_events);
 
     osg::notify(osg::INFO)<<"written events = "<<_events.size()<<std::endl;