# endif
#endif /* !defined(wxUSE_DATEPICKCTRL) */
+#ifndef wxUSE_DC_TRANSFORM_MATRIX
+# ifdef wxABORT_ON_CONFIG_ERROR
+# error "wxUSE_DC_TRANSFORM_MATRIX must be defined, please read comment near the top of this file."
+# else
+# define wxUSE_DC_TRANSFORM_MATRIX 1
+# endif
+#endif /* wxUSE_DC_TRANSFORM_MATRIX */
+
#ifndef wxUSE_DIRPICKERCTRL
# ifdef wxABORT_ON_CONFIG_ERROR
# error "wxUSE_DIRPICKERCTRL must be defined, please read comment near the top of this file."