+#ifndef wxUSE_ARTPROVIDER_STD
+# ifdef wxABORT_ON_CONFIG_ERROR
+# error "wxUSE_ARTPROVIDER_STD must be defined, please read comment near the top of this file."
+# else
+# define wxUSE_ARTPROVIDER_STD 0
+# endif
+#endif /* !defined(wxUSE_ARTPROVIDER_STD) */
+
+#ifndef wxUSE_ARTPROVIDER_TANGO
+# ifdef wxABORT_ON_CONFIG_ERROR
+# error "wxUSE_ARTPROVIDER_TANGO must be defined, please read comment near the top of this file."
+# else
+# define wxUSE_ARTPROVIDER_TANGO 0
+# endif
+#endif /* !defined(wxUSE_ARTPROVIDER_TANGO) */
+