#if defined(SIZEOF_LONG) && (SIZEOF_LONG == 8)
#define wxLongLong_t long
#define wxLongLongIsLong
-#elif defined(__VISUALC__)
+#elif defined(__VISUALC__) || defined( __VMS__ )
#define wxLongLong_t __int64
#elif defined(__GNUG__)
#define wxLongLong_t long long