+#if defined(__WXMSW__ ) || defined(__WXPM__)
+ // the factor we use to always keep the value in 16 bit range as the native
+ // control only supports ranges from 0 to 65,535
+ size_t m_factor;
+#endif // __WXMSW__
+
+ // for wxPD_APP_MODAL case
+ class WXDLLEXPORT wxWindowDisabler *m_winDisabler;
+