+ // NB: due to an ugly wxMSW hack you _must_ use DECLARE_DYNAMIC_CLASS()
+ // if you want your overloaded OnCompareItems() to be called.
+ // OTOH, if you don't want it you may omit the next line - this will
+ // make default (alphabetical) sorting much faster under wxMSW.
+ DECLARE_DYNAMIC_CLASS(MyTreeCtrl)