Function FindItem

src/prefs/PrefsDialog.cpp:96–102

   }
   
   wxTreeItemId FindItem( const wxTreeCtrl &ctrl, int nn )
   {
      // The inverse of the function above
      return VisitItems<wxTreeItemId>( ctrl,
         [=]( wxTreeItemId itemId, unsigned position ){
            return std::make_pair( nn == position, itemId ); } );
   }
}

// Define a custom class