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TypeInfo
===================================================================

.. currentmodule:: gi.repository.GObject





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






This structure is used to provide the type system with the information
required to initialize and destruct (finalize) a type's class and
its instances.

The initialized structure is passed to the :func:`~gi.repository.GObject.type_register_static` function
(or is copied into the provided :obj:`~gi.repository.GObject.TypeInfo` structure in the
:func:`~gi.repository.GObject.TypePlugin.complete_type_info`). 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.type_register_static`.












Fields
------

.. rst-class:: interim-class

.. class:: TypeInfo
   :no-index:
   

   .. attribute:: base_finalize

      Location of the base finalization function (optional)






   .. attribute:: base_init

      Location of the base initialization function (optional)






   .. attribute:: class_data

      User-supplied data passed to the class init/finalize functions






   .. attribute:: class_finalize

      Location of the class finalization function for
       classed and instantiatable types. Location of the default vtable
       finalization function for interface types. (optional)






   .. attribute:: class_init

      Location of the class initialization function for
       classed and instantiatable types. Location of the default vtable
       initialization function for interface types. (optional) This function
       is used both to fill in virtual functions in the class or default vtable,
       and to do type-specific setup such as registering signals and object
       properties.






   .. attribute:: class_size

      Size of the class structure (required for interface, classed and instantiatable types)






   .. attribute:: instance_init

      Location of the instance initialization function (optional, for instantiatable types only)






   .. attribute:: instance_size

      Size of the instance (object) structure (required for instantiatable types only)






   .. 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 this field is ignored.






   .. attribute:: value_table

      A :obj:`~gi.repository.GObject.TypeValueTable` function table for generic handling of GValues
       of this type (usually only useful for fundamental types)