Struct
GObjectParamSpecTypeInfo
Description [src]
struct GParamSpecTypeInfo {
  guint16 instance_size;
  guint16 n_preallocs;
  void (* instance_init) (
    GParamSpec* pspec
  );;
  GType value_type;
  void (* finalize) (
    GParamSpec* pspec
  );;
  void (* value_set_default) (
    GParamSpec* pspec,
    GValue* value
  );;
  gboolean (* value_validate) (
    GParamSpec* pspec,
    GValue* value
  );;
  gint (* values_cmp) (
    GParamSpec* pspec,
    const GValue* value1,
    const GValue* value2
  );;
}
This structure is used to provide the type system with the information required to initialize and destruct (finalize) a parameter’s class and instances thereof.
The initialized structure is passed to the g_param_type_register_static()
The type system will perform a deep copy of this structure, so its memory
does not need to be persistent across invocation of g_param_type_register_static().
Structure members
- instance_size:- guint16
- Size of the instance (object) structure. 
- n_preallocs:- guint16
- Prior to GLib 2.10, it specified the number of pre-allocated (cached) instances to reserve memory for (0 indicates no caching). Since GLib 2.10, it is ignored, since instances are allocated with the [slice allocator][glib-Memory-Slices] now. 
- instance_init:- void (* instance_init) ( GParamSpec* pspec )
- Location of the instance initialization function (optional). 
- value_type:- GType
- The - GTypeof values conforming to this- GParamSpec.
- finalize:- void (* finalize) ( GParamSpec* pspec )
- The instance finalization function (optional). 
- value_set_default:- void (* value_set_default) ( GParamSpec* pspec, GValue* value )
- Resets a - valueto the default value for- pspec(recommended, the default is g_value_reset()), see g_param_value_set_default().
- value_validate:- gboolean (* value_validate) ( GParamSpec* pspec, GValue* value )
- Ensures that the contents of - valuecomply with the specifications set out by- pspec(optional), see g_param_value_validate().
- values_cmp:- gint (* values_cmp) ( GParamSpec* pspec, const GValue* value1, const GValue* value2 )
- Compares - value1with- value2according to- pspec(recommended, the default is memcmp()), see g_param_values_cmp().