#define wxTreebookEventHandler(func) wxBookCtrlEventHandler(func)
-extern WXDLLIMPEXP_CORE const wxEventType wxEVT_COMMAND_TREEBOOK_PAGE_CHANGED;
-extern WXDLLIMPEXP_CORE const wxEventType wxEVT_COMMAND_TREEBOOK_PAGE_CHANGING;
-extern WXDLLIMPEXP_CORE const wxEventType wxEVT_COMMAND_TREEBOOK_NODE_COLLAPSED;
-extern WXDLLIMPEXP_CORE const wxEventType wxEVT_COMMAND_TREEBOOK_NODE_EXPANDED;
+wxDECLARE_EXPORTED_EVENT( WXDLLIMPEXP_CORE, wxEVT_COMMAND_TREEBOOK_PAGE_CHANGED, wxBookCtrlEvent )
+wxDECLARE_EXPORTED_EVENT( WXDLLIMPEXP_CORE, wxEVT_COMMAND_TREEBOOK_PAGE_CHANGING, wxBookCtrlEvent )
+wxDECLARE_EXPORTED_EVENT( WXDLLIMPEXP_CORE, wxEVT_COMMAND_TREEBOOK_NODE_COLLAPSED, wxBookCtrlEvent )
+wxDECLARE_EXPORTED_EVENT( WXDLLIMPEXP_CORE, wxEVT_COMMAND_TREEBOOK_NODE_EXPANDED, wxBookCtrlEvent )
#define EVT_TREEBOOK_PAGE_CHANGED(winid, fn) \
wx__DECLARE_EVT1(wxEVT_COMMAND_TREEBOOK_PAGE_CHANGED, winid, wxBookCtrlEventHandler(fn))