derive wxComboBox from wxItemContainer (via wxComboBoxBase) in wxGTK (patch 802882)

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@23746 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/mac/combobox.h

@@ -95,6 +95,8 @@ class WXDLLEXPORT wxComboBox: public wxComboBoxBase , public wxControl
     virtual int GetCount() const { return m_choice->GetCount() ; }
     void MacHandleControlClick( WXWidget control , wxInt16 controlpart , bool mouseStillDown ) ;
 
+    wxCONTROL_ITEMCONTAINER_CLIENTDATAOBJECT_RECAST
+
 protected:
     virtual int DoAppend(const wxString& item) ;
     virtual int DoInsert(const wxString& item, int pos) ;