+#include "wx/event.h"
+
+class WXDLLIMPEXP_FWD_ADV wxQueryLayoutInfoEvent;
+class WXDLLIMPEXP_FWD_ADV wxCalculateLayoutEvent;
+
+wxDECLARE_EXPORTED_EVENT( WXDLLIMPEXP_ADV, wxEVT_QUERY_LAYOUT_INFO, wxQueryLayoutInfoEvent );
+wxDECLARE_EXPORTED_EVENT( WXDLLIMPEXP_ADV, wxEVT_CALCULATE_LAYOUT, wxCalculateLayoutEvent );