(gobject:define-genum "GdkByteOrder" byte-order
  (:export t
   :type-initializer "gdk_byte_order_get_type")
  (:lsb-first 0)
  (:msb-first 1))  

:lsb-first

The values are stored with the least-significant byte first. For instance, the 32-bit value 0xffeecc would be stored in memory as 0xcc, 0xee, 0xff, 0x00.

:msb-first

The values are stored with the most-significant byte first. For instance, the 32-bit value 0xffeecc would be stored in memory as 0x00, 0xcc, 0xee, 0xff.