From Richard Schmidt, fixed the handling of user data so that it uses ref_ptr<> to avoid data getting deleted.
From Richard Schmidt, fixed the handling of user data so that it uses ref_ptr<> to avoid data getting deleted.


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