+#if defined(wxUSE_VALIDATORS) && !wxUSE_VALIDATORS
+ // wxWindows is compiled without support for wxValidator, but we still
+ // want to be able to pass wxDefaultValidator to the functions which take
+ // a wxValidator parameter to avoid using "#if wxUSE_VALIDATORS"
+ // everywhere
+ class WXDLLEXPORT wxValidator;
+ #define wxDefaultValidator (*((wxValidator *)NULL))
+#else // wxUSE_VALIDATORS
+