g-param-spec is an object structure that encapsulates the metadata required to specify parameters, such as e.g. g-object properties.

Parameter names need to start with a letter (a-z or A-Z). Subsequent characters can be letters, numbers or a '-'. All other characters are replaced by a '-' during construction. The result of this replacement is called the canonical name of the parameter.

(defcstruct g-param-spec
  (:type-instance (:pointer (:struct g-type-instance)))
  (:name (:string :free-from-foreign nil :free-to-foreign nil))
  (:flags g-param-flags)
  (:value-type g-type)
  (:owner-type g-type))  

:type-instance

Private g-type-instance portion.

:name

Name of this parameter: always an interned string.

:flags

The g-param-flags flags for this parameter.

:value-type

The g-value type for this parameter.

:owner-type

The g-type that uses this parameter.