GObjectEnumClass

struct GEnumClass {
  GTypeClass g_type_class;
  gint minimum;
  gint maximum;
  guint n_values;
  GEnumValue* values;
}

The class of an enumeration type holds information about its possible values.

`g_type_class`	The parent class.
`minimum`	The smallest possible value.
`maximum`	The largest possible value.
`n_values`	The number of possible values.
`values`	An array of `GEnumValue` structs describing the individual values.