Added some basic event handler.
Added some basic event handler.


marchelbling/osg,marchelbling/osg,jtorresfabra/osg,scrawl/osg,tomasthoresen/osg,jtorresfabra/osg,tomasthoresen/osg,jtorresfabra/osg,artoolkit/osg,artoolkit/osg,jtorresfabra/osg,artoolkit/osg,scrawl/osg,openscenegraph/osg,marchelbling/osg,scrawl/osg,tomasthoresen/osg,tomasthoresen/osg,artoolkit/osg,scrawl/osg,marchelbling/osg,openscenegraph/osg,openscenegraph/osg,openscenegraph/osg