if (_boxWidgetVolume!=NULL) { _boxWidgetVolume -> Delete(); }
if (_boxWidgetS1!=NULL) { _boxWidgetS1 -> Delete(); }
if (_vtkclipping3Ddataviewer!=NULL) { delete _vtkclipping3Ddataviewer; }
if (_boxWidgetVolume!=NULL) { _boxWidgetVolume -> Delete(); }
if (_boxWidgetS1!=NULL) { _boxWidgetS1 -> Delete(); }
if (_vtkclipping3Ddataviewer!=NULL) { delete _vtkclipping3Ddataviewer; }