(define-g-enum "GtkMessageType" gtk-message-type
  (:export t
   :type-initializer "gtk_message_type_get_type")
  (:info 0)
  (:warning 1)
  (:question 2)
  (:error 3)
  (:other 4))  

:info

Informational message.

:warning

Nonfatal warning message.

:question

Question requiring a choice.

:error

Fatal error message.

:other

None of the above, does not get an icon.