-#ifndef __HELPWINH_BASE__
-#define __HELPWINH_BASE__
+#ifndef _WX_HELPWIN_H_BASE_
+#define _WX_HELPWIN_H_BASE_
+#if defined(__WXMSW__)
#include "wx/msw/helpwin.h"
+#elif defined(__WXPM__)
+#include "wx/os2/helpwin.h"
+#endif
#endif
- // __HELPWINH_BASE__
+ // _WX_HELPWIN_H_BASE_