-#ifndef __HELPH_BASE__
-#define __HELPH_BASE__
-
-#ifdef __WINDOWS__
-#include "wx/msw/helpwin.h"
-#elif defined(__GTK__)
-#include "wx/generic/helphtml.h"
-#else
-#include "wx/generic/helpxlp.h"
-#endif
+#ifndef _WX_HELP_H_BASE_
+#define _WX_HELP_H_BASE_
+
+#include "wx/helpbase.h"
+
+#ifdef __WXMSW__
+ #include "wx/msw/helpwin.h"
+
+ #define wxHelpController wxWinHelpController
+ #define sm_classwxHelpController sm_classwxWinHelpController
+#else // !MSW
+ #include "wx/generic/helpext.h"
+
+ #define wxHelpController wxExtHelpController
+ #define sm_classwxHelpController sm_classwxExtHelpController
+#endif // MSW/!MSW