-#ifndef EVT_SPIN_UP
-#define EVT_SPIN_UP(id, func) { wxEVT_SCROLL_LINEUP, id, -1, (wxObjectEventFunction) (wxEventFunction) (wxSpinEventFunction) & func },
-#endif
-#ifndef EVT_SPIN_DOWN
-#define EVT_SPIN_DOWN(id, func) { wxEVT_SCROLL_LINEDOWN, id, -1, (wxObjectEventFunction) (wxEventFunction) (wxSpinEventFunction) & func },
-#endif
-#ifndef EVT_SPIN
-#define EVT_SPIN(id, func) { wxEVT_SCROLL_THUMBTRACK, id, -1, (wxObjectEventFunction) (wxEventFunction) (wxSpinEventFunction) & func },
-#endif
+#define EVT_SPIN_UP(winid, func) \
+ wx__DECLARE_EVT1(wxEVT_SCROLL_LINEUP, winid, wxSpinEventHandler(func))
+#define EVT_SPIN_DOWN(winid, func) \
+ wx__DECLARE_EVT1(wxEVT_SCROLL_LINEDOWN, winid, wxSpinEventHandler(func))
+#define EVT_SPIN(winid, func) \
+ wx__DECLARE_EVT1(wxEVT_SCROLL_THUMBTRACK, winid, wxSpinEventHandler(func))