static dbugVisualLayoutTracer dbugGetLayoutTracer()
        {
            RootGraphic visualroot = RootGraphic.dbugCurrentGlobalVRoot;

            if (visualroot == null || !visualroot.dbug_IsRecordLayoutTraceEnable)
            {
                return(null);
            }
            else
            {
                return(visualroot.dbug_GetLastestVisualLayoutTracer());
            }
        }