many wxItemContainer-related changes:

1. the main function for item insertion is now DoInsertItems() which allows
   for much more efficient addition of many new items at once
2. the items client data management is done entirely in wxItemContainer
   itself, the derived classes don't have to distinguish between void and
   object client data
3. many fixes for sorted controls, in particular implemented wxCB_SORT support
   in wxGTK combobox


git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@47730 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/univ/checklst.h

@@ -84,14 +84,11 @@ public:
         return GetStdInputHandler(handlerDef);
     }
 
+protected:
     // override all methods which add/delete items to update m_checks array as
     // well
-    virtual void Delete(unsigned int n);
-
-protected:
-    virtual int DoAppend(const wxString& item);
-    virtual void DoInsertItems(const wxArrayString& items, unsigned int pos);
-    virtual void DoSetItems(const wxArrayString& items, void **clientData);
+    virtual void OnItemInserted(unsigned int pos);
+    virtual void DoDeleteOneItem(unsigned int n);
     virtual void DoClear();
 
     // draw the check items instead of the usual ones