-#define EVT_CALENDAR(id, fn) { wxEVT_CALENDAR_DOUBLECLICKED, id, -1, (wxObjectEventFunction) (wxEventFunction) (wxCommandEventFunction) (wxCalendarEventFunction) & fn, (wxObject *) NULL },
-#define EVT_CALENDAR_SEL_CHANGED(id, fn) { wxEVT_CALENDAR_SEL_CHANGED, id, -1, (wxObjectEventFunction) (wxEventFunction) (wxCommandEventFunction) (wxCalendarEventFunction) & fn, (wxObject *) NULL },
-#define EVT_CALENDAR_DAY(id, fn) { wxEVT_CALENDAR_DAY_CHANGED, id, -1, (wxObjectEventFunction) (wxEventFunction) (wxCommandEventFunction) (wxCalendarEventFunction) & fn, (wxObject *) NULL },
-#define EVT_CALENDAR_MONTH(id, fn) { wxEVT_CALENDAR_MONTH_CHANGED, id, -1, (wxObjectEventFunction) (wxEventFunction) (wxCommandEventFunction) (wxCalendarEventFunction) & fn, (wxObject *) NULL },
-#define EVT_CALENDAR_YEAR(id, fn) { wxEVT_CALENDAR_YEAR_CHANGED, id, -1, (wxObjectEventFunction) (wxEventFunction) (wxCommandEventFunction) (wxCalendarEventFunction) & fn, (wxObject *) NULL },
-#define EVT_CALENDAR_WEEKDAY_CLICKED(id, fn) { wxEVT_CALENDAR_WEEKDAY_CLICKED, id, -1, (wxObjectEventFunction) (wxEventFunction) (wxCommandEventFunction) (wxCalendarEventFunction) & fn, (wxObject *) NULL },
+#define wxCalendarEventHandler(func) \
+ (wxObjectEventFunction)(wxEventFunction)wxStaticCastEvent(wxCalendarEventFunction, &func)
+
+#define wx__DECLARE_CALEVT(evt, id, fn) \
+ wx__DECLARE_EVT1(wxEVT_CALENDAR_ ## evt, id, wxCalendarEventHandler(fn))
+
+#define EVT_CALENDAR(id, fn) wx__DECLARE_CALEVT(DOUBLECLICKED, id, fn)
+#define EVT_CALENDAR_SEL_CHANGED(id, fn) wx__DECLARE_CALEVT(SEL_CHANGED, id, fn)
+#define EVT_CALENDAR_DAY(id, fn) wx__DECLARE_CALEVT(DAY_CHANGED, id, fn)
+#define EVT_CALENDAR_MONTH(id, fn) wx__DECLARE_CALEVT(MONTH_CHANGED, id, fn)
+#define EVT_CALENDAR_YEAR(id, fn) wx__DECLARE_CALEVT(YEAR_CHANGED, id, fn)
+#define EVT_CALENDAR_WEEKDAY_CLICKED(id, fn) wx__DECLARE_CALEVT(WEEKDAY_CLICKED, id, fn)
+
+#endif // wxUSE_CALENDARCTRL
+
+#endif // _WX_CALCTRL_H_