+
+/* By default, if wxHTML is compiled in, use the
+ wxHelpControllerHtml. If not, use the external help controller.
+ (of course, we shouldn't do it for wxMSW)
+*/
+#ifndef __WXMSW__
+#if wxUSE_HTML
+# include "wx/generic/helpwxht.h"
+# define wxHelpController wxHelpControllerHtml
+# define sm_classwxHelpController sm_classwxHelpControllerHtml
+#else
+# include "wx/generic/helpext.h"
+# define wxHelpController wxExtHelpController
+# define sm_classwxHelpController sm_classwxExtHelpController
+#endif
+#endif // wxMSW
+
+#endif // wxUSE_HELP