+#ifndef _WX_HELP_H_BASE_
+#define _WX_HELP_H_BASE_
+
+#include "wx/defs.h"
+
+#if wxUSE_HELP
+
+#include "wx/helpbase.h"
+
+#ifdef __WXWINCE__
+ #include "wx/msw/wince/helpwce.h"
+
+ #define wxHelpController wxWinceHelpController
+#elif defined(__WXPALMOS__)
+ #include "wx/palmos/help.h"
+
+ #define wxHelpController wxPalmHelpController
+#elif defined(__WXMSW__)
+ #include "wx/msw/helpchm.h"
+
+ #define wxHelpController wxCHMHelpController
+#else // !MSW
+
+#if wxUSE_WXHTML_HELP
+ #include "wx/html/helpctrl.h"
+ #define wxHelpController wxHtmlHelpController