Style for input method preedit. See also the gtk-im-preedit-style property.

(define-g-enum "GtkIMPreeditStyle" gtk-im-preedit-style
  (:export t
   :type-initializer "gtk_im_preedit_style_get_type")
  (:nothing 0)
  (:callback 1)
  (:none 2))  

The gtk-im-preedit-style enumeration has been deprecated since version 3.10 and should not be used in newly written code.