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ParamSpecTypeInfo
===================================================================

.. currentmodule:: gi.repository.GObject





.. class:: ParamSpecTypeInfo(*args, **kwargs)
   :no-contents-entry:






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 :func:`~gi.repository.GObject.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
:func:`~gi.repository.GObject.param_type_register_static`.












Fields
------

.. rst-class:: interim-class

.. class:: ParamSpecTypeInfo
   :no-index:
   

   .. attribute:: finalize

      The instance finalization function (optional).






   .. attribute:: instance_init

      Location of the instance initialization function (optional).






   .. attribute:: instance_size

      Size of the instance (object) structure.






   .. attribute:: n_preallocs

      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.






   .. attribute:: value_set_default

      Resets a ``value`` to the default value for ``pspec``
       (recommended, the default is :func:`~gi.repository.GObject.Value.reset`), see
       :func:`~gi.repository.GObject.param_value_set_default`.






   .. attribute:: value_type

      The :obj:`~gi.repository.GObject.Type` of values conforming to this :obj:`~gi.repository.GObject.ParamSpec`






   .. attribute:: value_validate

      Ensures that the contents of ``value`` comply with the
       specifications set out by ``pspec`` (optional), see
       :func:`~gi.repository.GObject.param_value_validate`.






   .. attribute:: values_cmp

      Compares ``value1`` with ``value2`` according to ``pspec``
       (recommended, the default is memcmp()), see :func:`~gi.repository.GObject.param_values_cmp`.