-// Macro must be defined here, not event.h, since it must reference wxSpinEventFunction
-#define EVT_SPINCTRL(id, fn) { wxEVT_COMMAND_SPINCTRL_UPDATED, id, -1, (wxObjectEventFunction) (wxEventFunction) (wxSpinEventFunction) & fn, (wxObject *) NULL },
+#define EVT_SPINCTRL(id, fn) \
+ wx__DECLARE_EVT1(wxEVT_COMMAND_SPINCTRL_UPDATED, id, wxSpinEventHandler(fn))