:right-sidebar: True

CClosure
===================================================================

.. currentmodule:: gi.repository.GObject





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






A ``GCClosure`` is a specialization of :obj:`~gi.repository.GObject.Closure` for C function callbacks.




Methods
-------

.. rst-class:: interim-class

.. class:: CClosure
   :no-index:


   .. classmethod:: marshal_BOOLEAN__BOXED_BOXED(return_value: ~gi.repository.GObject.Value, n_param_values: int, param_values: ~gi.repository.GObject.Value, invocation_hint: ~typing.Any = None, marshal_data: ~typing.Any = None) -> None

      A :obj:`~gi.repository.GObject.ClosureMarshal` function for use with signals with handlers that
      take two boxed pointers as arguments and return a boolean.  If you
      have such a signal, you will probably also need to use an
      accumulator, such as :func:`~gi.repository.GObject.signal_accumulator_true_handled`.






      :param return_value: A :obj:`~gi.repository.GObject.Value` to store the return value. May be :const:`None`
           if the callback of closure doesn't return a value.

      :param n_param_values: The length of the ``param_values`` array.

      :param param_values: An array of :obj:`~gi.repository.GObject.Value` holding the arguments
           on which to invoke the callback of closure.

      :param invocation_hint: The invocation hint given as the last argument to
           :func:`~gi.repository.GObject.Closure.invoke`.

      :param marshal_data: Additional data specified when registering the
           marshaller, see :func:`~gi.repository.GObject.Closure.set_marshal` and
           :func:`~gi.repository.GObject.Closure.set_meta_marshal`




   .. classmethod:: marshal_BOOLEAN__FLAGS(return_value: ~gi.repository.GObject.Value, n_param_values: int, param_values: ~gi.repository.GObject.Value, invocation_hint: ~typing.Any = None, marshal_data: ~typing.Any = None) -> None

      A :obj:`~gi.repository.GObject.ClosureMarshal` function for use with signals with handlers that
      take a flags type as an argument and return a boolean.  If you have
      such a signal, you will probably also need to use an accumulator,
      such as :func:`~gi.repository.GObject.signal_accumulator_true_handled`.






      :param return_value: A :obj:`~gi.repository.GObject.Value` to store the return value. May be :const:`None`
           if the callback of closure doesn't return a value.

      :param n_param_values: The length of the ``param_values`` array.

      :param param_values: An array of :obj:`~gi.repository.GObject.Value` holding the arguments
           on which to invoke the callback of closure.

      :param invocation_hint: The invocation hint given as the last argument to
           :func:`~gi.repository.GObject.Closure.invoke`.

      :param marshal_data: Additional data specified when registering the
           marshaller, see :func:`~gi.repository.GObject.Closure.set_marshal` and
           :func:`~gi.repository.GObject.Closure.set_meta_marshal`




   .. classmethod:: marshal_STRING__OBJECT_POINTER(return_value: ~gi.repository.GObject.Value, n_param_values: int, param_values: ~gi.repository.GObject.Value, invocation_hint: ~typing.Any = None, marshal_data: ~typing.Any = None) -> None

      A :obj:`~gi.repository.GObject.ClosureMarshal` function for use with signals with handlers that
      take a :obj:`~gi.repository.GObject.Object` and a pointer and produce a string.  It is highly
      unlikely that your signal handler fits this description.






      :param return_value: A :obj:`~gi.repository.GObject.Value` to store the return value. May be :const:`None`
           if the callback of closure doesn't return a value.

      :param n_param_values: The length of the ``param_values`` array.

      :param param_values: An array of :obj:`~gi.repository.GObject.Value` holding the arguments
           on which to invoke the callback of closure.

      :param invocation_hint: The invocation hint given as the last argument to
           :func:`~gi.repository.GObject.Closure.invoke`.

      :param marshal_data: Additional data specified when registering the
           marshaller, see :func:`~gi.repository.GObject.Closure.set_marshal` and
           :func:`~gi.repository.GObject.Closure.set_meta_marshal`




   .. classmethod:: marshal_VOID__BOOLEAN(return_value: ~gi.repository.GObject.Value, n_param_values: int, param_values: ~gi.repository.GObject.Value, invocation_hint: ~typing.Any = None, marshal_data: ~typing.Any = None) -> None

      A :obj:`~gi.repository.GObject.ClosureMarshal` function for use with signals with a single
      boolean argument.






      :param return_value: A :obj:`~gi.repository.GObject.Value` to store the return value. May be :const:`None`
           if the callback of closure doesn't return a value.

      :param n_param_values: The length of the ``param_values`` array.

      :param param_values: An array of :obj:`~gi.repository.GObject.Value` holding the arguments
           on which to invoke the callback of closure.

      :param invocation_hint: The invocation hint given as the last argument to
           :func:`~gi.repository.GObject.Closure.invoke`.

      :param marshal_data: Additional data specified when registering the
           marshaller, see :func:`~gi.repository.GObject.Closure.set_marshal` and
           :func:`~gi.repository.GObject.Closure.set_meta_marshal`




   .. classmethod:: marshal_VOID__BOXED(return_value: ~gi.repository.GObject.Value, n_param_values: int, param_values: ~gi.repository.GObject.Value, invocation_hint: ~typing.Any = None, marshal_data: ~typing.Any = None) -> None

      A :obj:`~gi.repository.GObject.ClosureMarshal` function for use with signals with a single
      argument which is any boxed pointer type.






      :param return_value: A :obj:`~gi.repository.GObject.Value` to store the return value. May be :const:`None`
           if the callback of closure doesn't return a value.

      :param n_param_values: The length of the ``param_values`` array.

      :param param_values: An array of :obj:`~gi.repository.GObject.Value` holding the arguments
           on which to invoke the callback of closure.

      :param invocation_hint: The invocation hint given as the last argument to
           :func:`~gi.repository.GObject.Closure.invoke`.

      :param marshal_data: Additional data specified when registering the
           marshaller, see :func:`~gi.repository.GObject.Closure.set_marshal` and
           :func:`~gi.repository.GObject.Closure.set_meta_marshal`




   .. classmethod:: marshal_VOID__CHAR(return_value: ~gi.repository.GObject.Value, n_param_values: int, param_values: ~gi.repository.GObject.Value, invocation_hint: ~typing.Any = None, marshal_data: ~typing.Any = None) -> None

      A :obj:`~gi.repository.GObject.ClosureMarshal` function for use with signals with a single
      character argument.






      :param return_value: A :obj:`~gi.repository.GObject.Value` to store the return value. May be :const:`None`
           if the callback of closure doesn't return a value.

      :param n_param_values: The length of the ``param_values`` array.

      :param param_values: An array of :obj:`~gi.repository.GObject.Value` holding the arguments
           on which to invoke the callback of closure.

      :param invocation_hint: The invocation hint given as the last argument to
           :func:`~gi.repository.GObject.Closure.invoke`.

      :param marshal_data: Additional data specified when registering the
           marshaller, see :func:`~gi.repository.GObject.Closure.set_marshal` and
           :func:`~gi.repository.GObject.Closure.set_meta_marshal`




   .. classmethod:: marshal_VOID__DOUBLE(return_value: ~gi.repository.GObject.Value, n_param_values: int, param_values: ~gi.repository.GObject.Value, invocation_hint: ~typing.Any = None, marshal_data: ~typing.Any = None) -> None

      A :obj:`~gi.repository.GObject.ClosureMarshal` function for use with signals with one
      double-precision floating point argument.






      :param return_value: A :obj:`~gi.repository.GObject.Value` to store the return value. May be :const:`None`
           if the callback of closure doesn't return a value.

      :param n_param_values: The length of the ``param_values`` array.

      :param param_values: An array of :obj:`~gi.repository.GObject.Value` holding the arguments
           on which to invoke the callback of closure.

      :param invocation_hint: The invocation hint given as the last argument to
           :func:`~gi.repository.GObject.Closure.invoke`.

      :param marshal_data: Additional data specified when registering the
           marshaller, see :func:`~gi.repository.GObject.Closure.set_marshal` and
           :func:`~gi.repository.GObject.Closure.set_meta_marshal`




   .. classmethod:: marshal_VOID__ENUM(return_value: ~gi.repository.GObject.Value, n_param_values: int, param_values: ~gi.repository.GObject.Value, invocation_hint: ~typing.Any = None, marshal_data: ~typing.Any = None) -> None

      A :obj:`~gi.repository.GObject.ClosureMarshal` function for use with signals with a single
      argument with an enumerated type.






      :param return_value: A :obj:`~gi.repository.GObject.Value` to store the return value. May be :const:`None`
           if the callback of closure doesn't return a value.

      :param n_param_values: The length of the ``param_values`` array.

      :param param_values: An array of :obj:`~gi.repository.GObject.Value` holding the arguments
           on which to invoke the callback of closure.

      :param invocation_hint: The invocation hint given as the last argument to
           :func:`~gi.repository.GObject.Closure.invoke`.

      :param marshal_data: Additional data specified when registering the
           marshaller, see :func:`~gi.repository.GObject.Closure.set_marshal` and
           :func:`~gi.repository.GObject.Closure.set_meta_marshal`




   .. classmethod:: marshal_VOID__FLAGS(return_value: ~gi.repository.GObject.Value, n_param_values: int, param_values: ~gi.repository.GObject.Value, invocation_hint: ~typing.Any = None, marshal_data: ~typing.Any = None) -> None

      A :obj:`~gi.repository.GObject.ClosureMarshal` function for use with signals with a single
      argument with a flags types.






      :param return_value: A :obj:`~gi.repository.GObject.Value` to store the return value. May be :const:`None`
           if the callback of closure doesn't return a value.

      :param n_param_values: The length of the ``param_values`` array.

      :param param_values: An array of :obj:`~gi.repository.GObject.Value` holding the arguments
           on which to invoke the callback of closure.

      :param invocation_hint: The invocation hint given as the last argument to
           :func:`~gi.repository.GObject.Closure.invoke`.

      :param marshal_data: Additional data specified when registering the
           marshaller, see :func:`~gi.repository.GObject.Closure.set_marshal` and
           :func:`~gi.repository.GObject.Closure.set_meta_marshal`




   .. classmethod:: marshal_VOID__FLOAT(return_value: ~gi.repository.GObject.Value, n_param_values: int, param_values: ~gi.repository.GObject.Value, invocation_hint: ~typing.Any = None, marshal_data: ~typing.Any = None) -> None

      A :obj:`~gi.repository.GObject.ClosureMarshal` function for use with signals with one
      single-precision floating point argument.






      :param return_value: A :obj:`~gi.repository.GObject.Value` to store the return value. May be :const:`None`
           if the callback of closure doesn't return a value.

      :param n_param_values: The length of the ``param_values`` array.

      :param param_values: An array of :obj:`~gi.repository.GObject.Value` holding the arguments
           on which to invoke the callback of closure.

      :param invocation_hint: The invocation hint given as the last argument to
           :func:`~gi.repository.GObject.Closure.invoke`.

      :param marshal_data: Additional data specified when registering the
           marshaller, see :func:`~gi.repository.GObject.Closure.set_marshal` and
           :func:`~gi.repository.GObject.Closure.set_meta_marshal`




   .. classmethod:: marshal_VOID__INT(return_value: ~gi.repository.GObject.Value, n_param_values: int, param_values: ~gi.repository.GObject.Value, invocation_hint: ~typing.Any = None, marshal_data: ~typing.Any = None) -> None

      A :obj:`~gi.repository.GObject.ClosureMarshal` function for use with signals with a single
      integer argument.






      :param return_value: A :obj:`~gi.repository.GObject.Value` to store the return value. May be :const:`None`
           if the callback of closure doesn't return a value.

      :param n_param_values: The length of the ``param_values`` array.

      :param param_values: An array of :obj:`~gi.repository.GObject.Value` holding the arguments
           on which to invoke the callback of closure.

      :param invocation_hint: The invocation hint given as the last argument to
           :func:`~gi.repository.GObject.Closure.invoke`.

      :param marshal_data: Additional data specified when registering the
           marshaller, see :func:`~gi.repository.GObject.Closure.set_marshal` and
           :func:`~gi.repository.GObject.Closure.set_meta_marshal`




   .. classmethod:: marshal_VOID__LONG(return_value: ~gi.repository.GObject.Value, n_param_values: int, param_values: ~gi.repository.GObject.Value, invocation_hint: ~typing.Any = None, marshal_data: ~typing.Any = None) -> None

      A :obj:`~gi.repository.GObject.ClosureMarshal` function for use with signals with with a single
      long integer argument.






      :param return_value: A :obj:`~gi.repository.GObject.Value` to store the return value. May be :const:`None`
           if the callback of closure doesn't return a value.

      :param n_param_values: The length of the ``param_values`` array.

      :param param_values: An array of :obj:`~gi.repository.GObject.Value` holding the arguments
           on which to invoke the callback of closure.

      :param invocation_hint: The invocation hint given as the last argument to
           :func:`~gi.repository.GObject.Closure.invoke`.

      :param marshal_data: Additional data specified when registering the
           marshaller, see :func:`~gi.repository.GObject.Closure.set_marshal` and
           :func:`~gi.repository.GObject.Closure.set_meta_marshal`




   .. classmethod:: marshal_VOID__OBJECT(return_value: ~gi.repository.GObject.Value, n_param_values: int, param_values: ~gi.repository.GObject.Value, invocation_hint: ~typing.Any = None, marshal_data: ~typing.Any = None) -> None

      A :obj:`~gi.repository.GObject.ClosureMarshal` function for use with signals with a single
      :obj:`~gi.repository.GObject.Object` argument.






      :param return_value: A :obj:`~gi.repository.GObject.Value` to store the return value. May be :const:`None`
           if the callback of closure doesn't return a value.

      :param n_param_values: The length of the ``param_values`` array.

      :param param_values: An array of :obj:`~gi.repository.GObject.Value` holding the arguments
           on which to invoke the callback of closure.

      :param invocation_hint: The invocation hint given as the last argument to
           :func:`~gi.repository.GObject.Closure.invoke`.

      :param marshal_data: Additional data specified when registering the
           marshaller, see :func:`~gi.repository.GObject.Closure.set_marshal` and
           :func:`~gi.repository.GObject.Closure.set_meta_marshal`




   .. classmethod:: marshal_VOID__PARAM(return_value: ~gi.repository.GObject.Value, n_param_values: int, param_values: ~gi.repository.GObject.Value, invocation_hint: ~typing.Any = None, marshal_data: ~typing.Any = None) -> None

      A :obj:`~gi.repository.GObject.ClosureMarshal` function for use with signals with a single
      argument of type :obj:`~gi.repository.GObject.ParamSpec`\.






      :param return_value: A :obj:`~gi.repository.GObject.Value` to store the return value. May be :const:`None`
           if the callback of closure doesn't return a value.

      :param n_param_values: The length of the ``param_values`` array.

      :param param_values: An array of :obj:`~gi.repository.GObject.Value` holding the arguments
           on which to invoke the callback of closure.

      :param invocation_hint: The invocation hint given as the last argument to
           :func:`~gi.repository.GObject.Closure.invoke`.

      :param marshal_data: Additional data specified when registering the
           marshaller, see :func:`~gi.repository.GObject.Closure.set_marshal` and
           :func:`~gi.repository.GObject.Closure.set_meta_marshal`




   .. classmethod:: marshal_VOID__POINTER(return_value: ~gi.repository.GObject.Value, n_param_values: int, param_values: ~gi.repository.GObject.Value, invocation_hint: ~typing.Any = None, marshal_data: ~typing.Any = None) -> None

      A :obj:`~gi.repository.GObject.ClosureMarshal` function for use with signals with a single raw
      pointer argument type.

      If it is possible, it is better to use one of the more specific
      functions such as :func:`~gi.repository.GObject.CClosure.marshal_VOID__OBJECT` or
      :func:`~gi.repository.GObject.CClosure.marshal_VOID__OBJECT`.






      :param return_value: A :obj:`~gi.repository.GObject.Value` to store the return value. May be :const:`None`
           if the callback of closure doesn't return a value.

      :param n_param_values: The length of the ``param_values`` array.

      :param param_values: An array of :obj:`~gi.repository.GObject.Value` holding the arguments
           on which to invoke the callback of closure.

      :param invocation_hint: The invocation hint given as the last argument to
           :func:`~gi.repository.GObject.Closure.invoke`.

      :param marshal_data: Additional data specified when registering the
           marshaller, see :func:`~gi.repository.GObject.Closure.set_marshal` and
           :func:`~gi.repository.GObject.Closure.set_meta_marshal`




   .. classmethod:: marshal_VOID__STRING(return_value: ~gi.repository.GObject.Value, n_param_values: int, param_values: ~gi.repository.GObject.Value, invocation_hint: ~typing.Any = None, marshal_data: ~typing.Any = None) -> None

      A :obj:`~gi.repository.GObject.ClosureMarshal` function for use with signals with a single string
      argument.






      :param return_value: A :obj:`~gi.repository.GObject.Value` to store the return value. May be :const:`None`
           if the callback of closure doesn't return a value.

      :param n_param_values: The length of the ``param_values`` array.

      :param param_values: An array of :obj:`~gi.repository.GObject.Value` holding the arguments
           on which to invoke the callback of closure.

      :param invocation_hint: The invocation hint given as the last argument to
           :func:`~gi.repository.GObject.Closure.invoke`.

      :param marshal_data: Additional data specified when registering the
           marshaller, see :func:`~gi.repository.GObject.Closure.set_marshal` and
           :func:`~gi.repository.GObject.Closure.set_meta_marshal`




   .. classmethod:: marshal_VOID__UCHAR(return_value: ~gi.repository.GObject.Value, n_param_values: int, param_values: ~gi.repository.GObject.Value, invocation_hint: ~typing.Any = None, marshal_data: ~typing.Any = None) -> None

      A :obj:`~gi.repository.GObject.ClosureMarshal` function for use with signals with a single
      unsigned character argument.






      :param return_value: A :obj:`~gi.repository.GObject.Value` to store the return value. May be :const:`None`
           if the callback of closure doesn't return a value.

      :param n_param_values: The length of the ``param_values`` array.

      :param param_values: An array of :obj:`~gi.repository.GObject.Value` holding the arguments
           on which to invoke the callback of closure.

      :param invocation_hint: The invocation hint given as the last argument to
           :func:`~gi.repository.GObject.Closure.invoke`.

      :param marshal_data: Additional data specified when registering the
           marshaller, see :func:`~gi.repository.GObject.Closure.set_marshal` and
           :func:`~gi.repository.GObject.Closure.set_meta_marshal`




   .. classmethod:: marshal_VOID__UINT(return_value: ~gi.repository.GObject.Value, n_param_values: int, param_values: ~gi.repository.GObject.Value, invocation_hint: ~typing.Any = None, marshal_data: ~typing.Any = None) -> None

      A :obj:`~gi.repository.GObject.ClosureMarshal` function for use with signals with with a single
      unsigned integer argument.






      :param return_value: A :obj:`~gi.repository.GObject.Value` to store the return value. May be :const:`None`
           if the callback of closure doesn't return a value.

      :param n_param_values: The length of the ``param_values`` array.

      :param param_values: An array of :obj:`~gi.repository.GObject.Value` holding the arguments
           on which to invoke the callback of closure.

      :param invocation_hint: The invocation hint given as the last argument to
           :func:`~gi.repository.GObject.Closure.invoke`.

      :param marshal_data: Additional data specified when registering the
           marshaller, see :func:`~gi.repository.GObject.Closure.set_marshal` and
           :func:`~gi.repository.GObject.Closure.set_meta_marshal`




   .. classmethod:: marshal_VOID__UINT_POINTER(return_value: ~gi.repository.GObject.Value, n_param_values: int, param_values: ~gi.repository.GObject.Value, invocation_hint: ~typing.Any = None, marshal_data: ~typing.Any = None) -> None

      A :obj:`~gi.repository.GObject.ClosureMarshal` function for use with signals with an unsigned int
      and a pointer as arguments.






      :param return_value: A :obj:`~gi.repository.GObject.Value` to store the return value. May be :const:`None`
           if the callback of closure doesn't return a value.

      :param n_param_values: The length of the ``param_values`` array.

      :param param_values: An array of :obj:`~gi.repository.GObject.Value` holding the arguments
           on which to invoke the callback of closure.

      :param invocation_hint: The invocation hint given as the last argument to
           :func:`~gi.repository.GObject.Closure.invoke`.

      :param marshal_data: Additional data specified when registering the
           marshaller, see :func:`~gi.repository.GObject.Closure.set_marshal` and
           :func:`~gi.repository.GObject.Closure.set_meta_marshal`




   .. classmethod:: marshal_VOID__ULONG(return_value: ~gi.repository.GObject.Value, n_param_values: int, param_values: ~gi.repository.GObject.Value, invocation_hint: ~typing.Any = None, marshal_data: ~typing.Any = None) -> None

      A :obj:`~gi.repository.GObject.ClosureMarshal` function for use with signals with a single
      unsigned long integer argument.






      :param return_value: A :obj:`~gi.repository.GObject.Value` to store the return value. May be :const:`None`
           if the callback of closure doesn't return a value.

      :param n_param_values: The length of the ``param_values`` array.

      :param param_values: An array of :obj:`~gi.repository.GObject.Value` holding the arguments
           on which to invoke the callback of closure.

      :param invocation_hint: The invocation hint given as the last argument to
           :func:`~gi.repository.GObject.Closure.invoke`.

      :param marshal_data: Additional data specified when registering the
           marshaller, see :func:`~gi.repository.GObject.Closure.set_marshal` and
           :func:`~gi.repository.GObject.Closure.set_meta_marshal`




   .. classmethod:: marshal_VOID__VARIANT(return_value: ~gi.repository.GObject.Value, n_param_values: int, param_values: ~gi.repository.GObject.Value, invocation_hint: ~typing.Any = None, marshal_data: ~typing.Any = None) -> None

      A :obj:`~gi.repository.GObject.ClosureMarshal` function for use with signals with a single
      :obj:`~gi.repository.GLib.Variant` argument.






      :param return_value: A :obj:`~gi.repository.GObject.Value` to store the return value. May be :const:`None`
           if the callback of closure doesn't return a value.

      :param n_param_values: The length of the ``param_values`` array.

      :param param_values: An array of :obj:`~gi.repository.GObject.Value` holding the arguments
           on which to invoke the callback of closure.

      :param invocation_hint: The invocation hint given as the last argument to
           :func:`~gi.repository.GObject.Closure.invoke`.

      :param marshal_data: Additional data specified when registering the
           marshaller, see :func:`~gi.repository.GObject.Closure.set_marshal` and
           :func:`~gi.repository.GObject.Closure.set_meta_marshal`




   .. classmethod:: marshal_VOID__VOID(return_value: ~gi.repository.GObject.Value, n_param_values: int, param_values: ~gi.repository.GObject.Value, invocation_hint: ~typing.Any = None, marshal_data: ~typing.Any = None) -> None

      A :obj:`~gi.repository.GObject.ClosureMarshal` function for use with signals with no arguments.






      :param return_value: A :obj:`~gi.repository.GObject.Value` to store the return value. May be :const:`None`
           if the callback of closure doesn't return a value.

      :param n_param_values: The length of the ``param_values`` array.

      :param param_values: An array of :obj:`~gi.repository.GObject.Value` holding the arguments
           on which to invoke the callback of closure.

      :param invocation_hint: The invocation hint given as the last argument to
           :func:`~gi.repository.GObject.Closure.invoke`.

      :param marshal_data: Additional data specified when registering the
           marshaller, see :func:`~gi.repository.GObject.Closure.set_marshal` and
           :func:`~gi.repository.GObject.Closure.set_meta_marshal`




   .. classmethod:: marshal_generic(return_gvalue: ~gi.repository.GObject.Value, n_param_values: int, param_values: ~gi.repository.GObject.Value, invocation_hint: ~typing.Any = None, marshal_data: ~typing.Any = None) -> None

      A generic marshaller function implemented via
      `libffi <http://sourceware.org/libffi/>`__\.

      Normally this function is not passed explicitly to :func:`~gi.repository.GObject.signal_new`,
      but used automatically by GLib when specifying a :const:`None` marshaller.


      .. versionadded:: 2.30





      :param return_gvalue: A :obj:`~gi.repository.GObject.Value` to store the return value. May be :const:`None`
           if the callback of closure doesn't return a value.

      :param n_param_values: The length of the ``param_values`` array.

      :param param_values: An array of :obj:`~gi.repository.GObject.Value` holding the arguments
           on which to invoke the callback of closure.

      :param invocation_hint: The invocation hint given as the last argument to
           :func:`~gi.repository.GObject.Closure.invoke`.

      :param marshal_data: Additional data specified when registering the
           marshaller, see :func:`~gi.repository.GObject.Closure.set_marshal` and
           :func:`~gi.repository.GObject.Closure.set_meta_marshal`














Fields
------

.. rst-class:: interim-class

.. class:: CClosure
   :no-index:
   

   .. attribute:: callback

      The callback function






   .. attribute:: closure

      The :obj:`~gi.repository.GObject.Closure`