(define-g-enum "GdkOwnerChange" gdk-owner-change
  (:export t
   :type-initializer "gdk_owner_change_get_type")
  (:new-owner 0)
  (:destroy 1)
  (:close 2))  

:new-owner

Some other application claimed the ownership.

:destroy

The window was destroyed.

:close

The client was closed.