Fixed fullscreen toggle in ViewerEventHandler that assumed the first RenderSurface was a window (not a pbuffer).
Fixed fullscreen toggle in ViewerEventHandler that assumed the first
RenderSurface was a window (not a pbuffer).


ghub/osg,koshman86/osg,artoolkit/osg,ntoand/osg,koshman86/osg,ntoand/osg,stmh/osg,stmh/osg,stmh/osg,artoolkit/osg,stmh/osg,ghub/osg,XiaoCC/osg,koshman86/osg,XiaoCC/osg,ntoand/osg,XiaoCC/osg,XiaoCC/osg,omega-hub/osg,koshman86/osg,stmh/osg,omega-hub/osg,ghub/osg,XiaoCC/osg,omega-hub/osg,ghub/osg,artoolkit/osg,omega-hub/osg,ntoand/osg,artoolkit/osg