(defcstruct g-param-spec-char
  (:parent-instance (:pointer (:struct g-param-spec)))
  (:minimum :int8)
  (:maximum :int8)
  (:default-value :int8))  

:parent-instance

Private g-param-spec portion.

:minimum

An 8-bit integer with the minimum value.

:maximum

An 8-bit integer with the maximum value.

:default-value

An 8-bit integer with the default value.