+#if defined(__VISAGECPP__)
+/* I don't compile with this _System linkage for wxWindows */
+# ifdef PNGAPI
+# undef PNGAPI
+# endif
+# define PNGAPI _Optlink
+# define PNG_IMPEXP
+# define PNG_USE_LOCAL_ARRAYS
+# ifdef PNG_USE_GLOBAL_ARRAYS
+# undef PNG_USE_GLOBAL_ARRAYS
+# endif
+extern const char png_libpng_ver[18];
+#endif
+