+#if wxUSE_HELP
+# if !wxUSE_BMPBUTTON
+# ifdef wxABORT_ON_CONFIG_ERROR
+# error "wxUSE_HELP requires wxUSE_BMPBUTTON"
+# else
+# undef wxUSE_BMPBUTTON
+# define wxUSE_BMPBUTTON 1
+# endif
+# endif
+
+# if !wxUSE_CHOICEDLG
+# ifdef wxABORT_ON_CONFIG_ERROR
+# error "wxUSE_HELP requires wxUSE_CHOICEDLG"
+# else
+# undef wxUSE_CHOICEDLG
+# define wxUSE_CHOICEDLG 1
+# endif
+# endif
+#endif /* wxUSE_HELP */
+