#if wxUSE_RIBBON
-#include <wx/brush.h>
-#include <wx/pen.h>
+#include "wx/brush.h"
+#include "wx/colour.h"
+#include "wx/font.h"
+#include "wx/pen.h"
+#include "wx/bitmap.h"
+
+class WXDLLIMPEXP_FWD_CORE wxDC;
+class WXDLLIMPEXP_FWD_CORE wxWindow;
enum wxRibbonArtSetting
{