+ // Array storing the indices of all selected items that we already notified
+ // the user code about for multi selection list boxes.
+ //
+ // For single selection list boxes, we reuse this array to store the single
+ // currently selected item, this is used by DoChangeSingleSelection().
+ //
+ // TODO-OPT: wxSelectionStore would be more efficient for big list boxes.
+ wxArrayInt m_oldSelections;
+
+ // Update m_oldSelections with currently selected items (does nothing in
+ // single selection mode on platforms other than MSW).
+ void UpdateOldSelections();
+