void
  Visit(const AnnularSectorZone& oz)
  {
    Visit((const SectorZone&)oz);
    LoadFormProperty(*wf, _T("prpOZSectorInnerRadius"),
                     ugDistance, oz.getInnerRadius());

    WndProperty* wap = (WndProperty*)wf->FindByName(_T("prpOZSectorInnerRadius"));
    if (wap) {
      wap->show();
    }
  }