#undef WXDEBUG_SCROLLBAR
#endif // !__WXDEBUG__
+#if defined(WXDEBUG_SCROLLBAR) && defined(__WXMSW__) && !defined(__WXMICROWIN__)
+#include "wx/msw/private.h"
+#endif
+
// ----------------------------------------------------------------------------
// wxScrollBarTimer: this class is used to repeatedly scroll the scrollbar
// when the mouse is help pressed on the arrow or on the bar. It generates the