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

src/os2/checklst.cpp

@@ -284,10 +284,13 @@ void wxCheckListBox::Delete(unsigned int n)
     m_aItems.RemoveAt(n);
 } // end of wxCheckListBox::Delete
 
-void wxCheckListBox::DoInsertItems(const wxArrayString& items, unsigned int pos)
+int wxCheckListBox::DoInsertItems(const wxArrayStringsAdapter& items,
+                                  unsigned int pos,
+                                  void **clientData,
+                                  wxClientDataType type)
 {
     // pos is validated in wxListBox
-    wxListBox::DoInsertItems( items, pos );
+    int result = wxListBox::DoInsertItems( items, pos, clientData, type );
     unsigned int n = items.GetCount();
     for (unsigned int i = 0; i < n; i++)
     {
@@ -301,7 +304,8 @@ void wxCheckListBox::DoInsertItems(const wxArrayString& items, unsigned int pos)
                       MPFROMP(pNewItem)
                     );
     }
-} // end of wxCheckListBox::InsertItems
+    return result;
+} // end of wxCheckListBox::DoInsertItems
 
 bool wxCheckListBox::SetFont ( const wxFont& rFont )
 {