glibmm 2.46.2

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Gio::DataOutputStream Class Reference
Stream Classes

An implementation of BufferedOutputStream that allows for high-level data manipulation of arbitrary data (including binary operations). More...

`#include <giomm/dataoutputstream.h>`

Inheritance diagram for Gio::DataOutputStream:
[legend]

## Public Member Functions

| DataOutputStream (DataOutputStream&& src) noexcept
DataOutputStream& | operator= (DataOutputStream&& src) noexcept
virtual | ~DataOutputStream () noexcept
GDataOutputStream* | gobj ()
| Provides access to the underlying C GObject. More...
const GDataOutputStream* | gobj () const
| Provides access to the underlying C GObject. More...
GDataOutputStream* | gobj_copy ()
| Provides access to the underlying C instance. The caller is responsible for unrefing it. Use when directly setting fields in structs. More...
void | set_byte_order (DataStreamByteOrder order)
| Sets the byte order of the data output stream to order. More...
DataStreamByteOrder | get_byte_order () const
| Gets the byte order for the stream. More...
bool | put_byte (guchar data, const Glib::RefPtr< Cancellable >& cancellable)
| Puts a byte into the output stream. More...
bool | put_byte (guchar data)
| A put_byte() convenience overload. More...
bool | put_int16 (gint16 data, const Glib::RefPtr< Cancellable >& cancellable)
| Puts a signed 16-bit integer into the output stream. More...
bool | put_int16 (gint16 data)
| A put_int16() convenience overload. More...
bool | put_uint16 (guint16 data, const Glib::RefPtr< Cancellable >& cancellable)
| Puts an unsigned 16-bit integer into the output stream. More...
bool | put_uint16 (guint16 data)
| A put_uint16() convenience overload. More...
bool | put_int32 (gint32 data, const Glib::RefPtr< Cancellable >& cancellable)
| Puts a signed 32-bit integer into the output stream. More...
bool | put_int32 (gint32 data)
| A put_int32() convenience overload. More...
bool | put_uint32 (guint32 data, const Glib::RefPtr< Cancellable >& cancellable)
| Puts an unsigned 32-bit integer into the stream. More...
bool | put_uint32 (guint32 data)
| A put_uint32() convenience overload. More...
bool | put_int64 (gint64 data, const Glib::RefPtr< Cancellable >& cancellable)
| Puts a signed 64-bit integer into the stream. More...
bool | put_int64 (gint64 data)
| A put_int64() convenience overload. More...
bool | put_uint64 (guint64 data, const Glib::RefPtr< Cancellable >& cancellable)
| Puts an unsigned 64-bit integer into the stream. More...
bool | put_uint64 (guint64 data)
| A put_uint64() convenience overload. More...
bool | put_string (std::string str, const Glib::RefPtr< Cancellable >& cancellable)
| Puts a string into the output stream. More...
bool | put_string (std::string str)
| A put_string() convenience overload. More...
Glib::PropertyProxy< DataStreamByteOrder > | property_byte_order ()
| Determines the byte ordering that is used when writing multi-byte entities (such as integers) to the stream. More...
Glib::PropertyProxy_ReadOnly< DataStreamByteOrder > | property_byte_order () const
| Determines the byte ordering that is used when writing multi-byte entities (such as integers) to the stream. More...
Public Member Functions inherited from Gio::BufferedOutputStream
| BufferedOutputStream (BufferedOutputStream&& src) noexcept
BufferedOutputStream& | operator= (BufferedOutputStream&& src) noexcept
virtual | ~BufferedOutputStream () noexcept
GBufferedOutputStream* | gobj ()
| Provides access to the underlying C GObject. More...
const GBufferedOutputStream* | gobj () const
| Provides access to the underlying C GObject. More...
GBufferedOutputStream* | gobj_copy ()
| Provides access to the underlying C instance. The caller is responsible for unrefing it. Use when directly setting fields in structs. More...
gsize | get_buffer_size () const
| Gets the size of the buffer in the stream. More...
void | set_buffer_size (gsize size)
| Sets the size of the internal buffer to size. More...
void | set_auto_grow (bool auto_grow=true)
| Sets whether or not the stream's buffer should automatically grow. More...
bool | get_auto_grow () const
| Checks if the buffer automatically grows as data is added. More...
Glib::PropertyProxy< guint > | property_buffer_size ()
| The size of the backend buffer. More...
Glib::PropertyProxy_ReadOnly< guint > | property_buffer_size () const
| The size of the backend buffer. More...
Glib::PropertyProxy< bool > | property_auto_grow ()
| Whether the buffer should automatically grow. More...
Glib::PropertyProxy_ReadOnly< bool > | property_auto_grow () const
| Whether the buffer should automatically grow. More...
Public Member Functions inherited from Gio::FilterOutputStream
| FilterOutputStream (FilterOutputStream&& src) noexcept
FilterOutputStream& | operator= (FilterOutputStream&& src) noexcept
virtual | ~FilterOutputStream () noexcept
GFilterOutputStream* | gobj ()
| Provides access to the underlying C GObject. More...
const GFilterOutputStream* | gobj () const
| Provides access to the underlying C GObject. More...
GFilterOutputStream* | gobj_copy ()
| Provides access to the underlying C instance. The caller is responsible for unrefing it. Use when directly setting fields in structs. More...
Glib::RefPtr< OutputStream > | get_base_stream ()
| Gets the base stream for the filter stream. More...
Glib::RefPtr< const OutputStream > | get_base_stream () const
| Gets the base stream for the filter stream. More...
bool | get_close_base_stream () const
| Returns whether the base stream will be closed when stream is closed. More...
void | set_close_base_stream (bool close_base=true)
| Sets whether the base stream will be closed when stream is closed. More...
Glib::PropertyProxy_ReadOnly< Glib::RefPtr< InputStream > > | property_base_stream () const
| The underlying base stream on which the io ops will be done. More...
Glib::PropertyProxy_ReadOnly< bool > | property_close_base_stream () const
| If the base stream should be closed when the filter stream is closed. More...
Public Member Functions inherited from Gio::OutputStream
| OutputStream (OutputStream&& src) noexcept
OutputStream& | operator= (OutputStream&& src) noexcept
virtual | ~OutputStream () noexcept
GOutputStream* | gobj ()
| Provides access to the underlying C GObject. More...
const GOutputStream* | gobj () const
| Provides access to the underlying C GObject. More...
GOutputStream* | gobj_copy ()
| Provides access to the underlying C instance. The caller is responsible for unrefing it. Use when directly setting fields in structs. More...
gssize | write (const void* buffer, gsize count, const Glib::RefPtr< Cancellable >& cancellable)
| Tries to write count bytes from buffer into the stream. More...
gssize | write (const void* buffer, gsize count)
| A write() convenience overload. More...
gssize | write (const std::string& buffer, const Glib::RefPtr< Cancellable >& cancellable)
| Tries to write count bytes from buffer into the stream. More...
gssize | write (const std::string& buffer)
| Tries to write count bytes from buffer into the stream. More...
bool | write_all (const void* buffer, gsize count, gsize& bytes_written, const Glib::RefPtr< Cancellable >& cancellable)
| Tries to write count bytes from buffer into the stream. More...
bool | write_all (const void* buffer, gsize count, gsize& bytes_written)
| A write_all() convenience overload. More...
bool | write_all (const std::string& buffer, gsize& bytes_written, const Glib::RefPtr< Cancellable >& cancellable)
| Tries to write count bytes from buffer into the stream. More...
bool | write_all (const std::string& buffer, gsize& bytes_written)
| Tries to write count bytes from buffer into the stream. More...
gssize | write_bytes (const Glib::RefPtr< const Glib::Bytes >& bytes, const Glib::RefPtr< Cancellable >& cancellable)
| A wrapper function for g_output_stream_write() which takes a Bytes as input. More...
gssize | write_bytes (const Glib::RefPtr< const Glib::Bytes >& bytes)
| A write_bytes() convenience overload. More...
void | write_bytes_async (const Glib::RefPtr< const Glib::Bytes >& bytes, const SlotAsyncReady& slot, const Glib::RefPtr< Cancellable >& cancellable, int io_priority=Glib::PRIORITY_DEFAULT)
| Request an asynchronous write of the data in bytes to the stream. More...
void | write_bytes_async (const Glib::RefPtr< const Glib::Bytes >& bytes, const SlotAsyncReady& slot, int io_priority=Glib::PRIORITY_DEFAULT)
| Request an asynchronous write of the data in bytes to the stream. More...
gssize | write_bytes_finish (const Glib::RefPtr< AsyncResult >& result)
| Finishes a stream write-from-Bytes operation. More...
gssize | splice (const Glib::RefPtr< InputStream >& source, const Glib::RefPtr< Cancellable >& cancellable, OutputStreamSpliceFlags flags=OUTPUT_STREAM_SPLICE_NONE)
| Splices an input stream into an output stream. More...
gssize | splice (const Glib::RefPtr< InputStream >& source, OutputStreamSpliceFlags flags=OUTPUT_STREAM_SPLICE_NONE)
| Splices an input stream into an output stream. More...
bool | flush (const Glib::RefPtr< Cancellable >& cancellable)
| Flushed any outstanding buffers in the stream. More...
bool | flush ()
| A flush() convenience overload. More...
bool | close (const Glib::RefPtr< Cancellable >& cancellable)
| Closes the stream, releasing resources related to it. More...
bool | close ()
| A close() convenience overload. More...
void | write_async (const void* buffer, gsize count, const SlotAsyncReady& slot, const Glib::RefPtr< Cancellable >& cancellable, int io_priority=Glib::PRIORITY_DEFAULT)
| Request an asynchronous write of count bytes from buffer into the stream. More...
void | write_async (const void* buffer, gsize count, const SlotAsyncReady& slot, int io_priority=Glib::PRIORITY_DEFAULT)
| Request an asynchronous write of count bytes from buffer into the stream. More...
gssize | write_finish (const Glib::RefPtr< AsyncResult >& result)
| Finishes a stream write operation. More...
void | write_all_async (const void* buffer, gsize count, const SlotAsyncReady& slot, const Glib::RefPtr< Cancellable >& cancellable, int io_priority=Glib::PRIORITY_DEFAULT)
| Request an asynchronous write of count bytes from buffer into the stream. More...
void | write_all_async (const void* buffer, gsize count, const SlotAsyncReady& slot, int io_priority=Glib::PRIORITY_DEFAULT)
| Request an asynchronous write of count bytes from buffer into the stream. More...
bool | write_all_finish (const Glib::RefPtr< AsyncResult >& result, gsize& bytes_written)
| Finishes an asynchronous stream write operation started with g_output_stream_write_all_async(). More...
void | splice_async (const Glib::RefPtr< InputStream >& source, const SlotAsyncReady& slot, const Glib::RefPtr< Cancellable >& cancellable, OutputStreamSpliceFlags flags=OUTPUT_STREAM_SPLICE_NONE, int io_priority=Glib::PRIORITY_DEFAULT)
| Splices a stream asynchronously. More...
void | splice_async (const Glib::RefPtr< InputStream >& source, const SlotAsyncReady& slot, OutputStreamSpliceFlags flags=OUTPUT_STREAM_SPLICE_NONE, int io_priority=Glib::PRIORITY_DEFAULT)
| Splices a stream asynchronously. More...
gssize | splice_finish (const Glib::RefPtr< AsyncResult >& result)
| Finishes an asynchronous stream splice operation. More...
void | flush_async (const SlotAsyncReady& slot, const Glib::RefPtr< Cancellable >& cancellable, int io_priority=Glib::PRIORITY_DEFAULT)
| Flushes a stream asynchronously. More...
void | flush_async (const SlotAsyncReady& slot, int io_priority=Glib::PRIORITY_DEFAULT)
| Flushes a stream asynchronously. More...
bool | flush_finish (const Glib::RefPtr< AsyncResult >& result)
| Finishes flushing an output stream. More...
void | close_async (const SlotAsyncReady& slot, const Glib::RefPtr< Cancellable >& cancellable, int io_priority=Glib::PRIORITY_DEFAULT)
| Requests an asynchronous close of the stream, releasing resources related to it. More...
void | close_async (const SlotAsyncReady& slot, int io_priority=Glib::PRIORITY_DEFAULT)
| Requests an asynchronous close of the stream, releasing resources related to it. More...
bool | close_finish (const Glib::RefPtr< AsyncResult >& result)
| Closes an output stream. More...
Public Member Functions inherited from Glib::Object
| Object (const Object&)=delete
Object& | operator= (const Object&)=delete
| Object (Object&& src) noexcept
Object& | operator= (Object&& src) noexcept
void* | get_data (const QueryQuark& key)
void | set_data (const Quark& key, void* data)
void | set_data (const Quark& key, void* data, DestroyNotify notify)
void | remove_data (const QueryQuark& quark)
void* | steal_data (const QueryQuark& quark)
Public Member Functions inherited from Glib::ObjectBase
| ObjectBase (const ObjectBase&)=delete
ObjectBase& | operator= (const ObjectBase&)=delete
void | set_property_value (const Glib::ustring& property_name, const Glib::ValueBase& value)
| You probably want to use a specific property_*() accessor method instead. More...
void | get_property_value (const Glib::ustring& property_name, Glib::ValueBase& value) const
| You probably want to use a specific property_*() accessor method instead. More...
template<class PropertyType >
void | set_property (const Glib::ustring& property_name, const PropertyType& value)
| You probably want to use a specific property_*() accessor method instead. More...
template<class PropertyType >
void | get_property (const Glib::ustring& property_name, PropertyType& value) const
| You probably want to use a specific property_*() accessor method instead. More...
void | connect_property_changed (const Glib::ustring& property_name, const sigc::slot< void >& slot)
| You can use the signal_changed() signal of the property proxy instead, but this is necessary when using the reduced API. More...
sigc::connection | connect_property_changed_with_return (const Glib::ustring& property_name, const sigc::slot< void >& slot)
| You can use the signal_changed() signal of the property proxy instead, but this is necessary when using the reduced API. More...
void | freeze_notify ()
| Increases the freeze count on object. More...
void | thaw_notify ()
| Reverts the effect of a previous call to freeze_notify(). More...
virtual void | reference () const
| Increment the reference count for this object. More...
virtual void | unreference () const
| Decrement the reference count for this object. More...
GObject* | gobj ()
| Provides access to the underlying C GObject. More...
const GObject* | gobj () const
| Provides access to the underlying C GObject. More...
GObject* | gobj_copy () const
| Give a ref-ed copy to someone. Use for direct struct access. More...
Public Member Functions inherited from sigc::trackable
| trackable () noexcept
| trackable (const trackable &src) noexcept
| trackable (trackable &&src)
| ~trackable ()
void | add_destroy_notify_callback (void *data, func_destroy_notify func) const
void | notify_callbacks ()
trackable & | operator= (const trackable &src)
trackable & | operator= (trackable &&src)
void | remove_destroy_notify_callback (void *data) const

## Static Public Member Functions

static GType | get_type ()
| Get the GType for this class, for use with the underlying GObject type system. More...
static Glib::RefPtr< DataOutputStream > | create (const Glib::RefPtr< OutputStream >& base_stream)
Static Public Member Functions inherited from Gio::BufferedOutputStream
static GType | get_type ()
| Get the GType for this class, for use with the underlying GObject type system. More...
static Glib::RefPtr< BufferedOutputStream > | create (const Glib::RefPtr< OutputStream >& base_stream)
| Creates a new buffered output stream for a base stream. More...
static Glib::RefPtr< BufferedOutputStream > | create_sized (const Glib::RefPtr< OutputStream >& base_stream, gsize buffer_size)
| Creates a new buffered output stream with a given buffer size. More...
Static Public Member Functions inherited from Gio::FilterOutputStream
static GType | get_type ()
| Get the GType for this class, for use with the underlying GObject type system. More...
Static Public Member Functions inherited from Gio::OutputStream
static GType | get_type ()
| Get the GType for this class, for use with the underlying GObject type system. More...

## Protected Member Functions

| DataOutputStream (const Glib::RefPtr< OutputStream >& base_stream)
Protected Member Functions inherited from Gio::BufferedOutputStream
| BufferedOutputStream (const Glib::RefPtr< OutputStream >& base_stream)
| BufferedOutputStream (const Glib::RefPtr< OutputStream >& base_stream, gsize buffer_size)
Protected Member Functions inherited from Glib::Object
| Object ()
| Object (const Glib::ConstructParams& construct_params)
| Object (GObject* castitem)
virtual | ~Object () noexcept
Protected Member Functions inherited from Glib::ObjectBase
| ObjectBase ()
| This default constructor is called implicitly from the constructor of user-derived classes, even if, for instance, Gtk::Button calls a different ObjectBase constructor. More...
| ObjectBase (const char* custom_type_name)
| A derived constructor always overrides this choice. More...
| ObjectBase (const std::type_info& custom_type_info)
| This constructor is a special feature to allow creation of derived types on the fly, without having to use g_object_new() manually. More...
| ObjectBase (ObjectBase&& src) noexcept
ObjectBase& | operator= (ObjectBase&& src) noexcept
virtual | ~ObjectBase () noexcept=0
void | initialize (GObject* castitem)
void | initialize_move (GObject* castitem, Glib::ObjectBase* previous_wrapper)

## Related Functions

(Note that these are not member functions.)
Glib::RefPtr< Gio::DataOutputStream > | wrap (GDataOutputStream* object, bool take_copy=false)
| A Glib::wrap() method for this object. More...
Related Functions inherited from Gio::BufferedOutputStream
Glib::RefPtr< Gio::BufferedOutputStream > | wrap (GBufferedOutputStream* object, bool take_copy=false)
| A Glib::wrap() method for this object. More...
Related Functions inherited from Gio::FilterOutputStream
Glib::RefPtr< Gio::FilterOutputStream > | wrap (GFilterOutputStream* object, bool take_copy=false)
| A Glib::wrap() method for this object. More...
Related Functions inherited from Gio::OutputStream
Glib::RefPtr< Gio::OutputStream > | wrap (GOutputStream* object, bool take_copy=false)
| A Glib::wrap() method for this object. More...
Related Functions inherited from Glib::Object
Glib::RefPtr< Glib::Object > | wrap (GObject* object, bool take_copy=false)

## Additional Inherited Members

Public Types inherited from Glib::Object
typedef void(* | DestroyNotify) (gpointer data)
Public Types inherited from sigc::trackable
typedef internal::func_destroy_notify | func_destroy_notify

## Detailed Description

An implementation of BufferedOutputStream that allows for high-level data manipulation of arbitrary data (including binary operations).

Since glibmm 2.16:

## Constructor & Destructor Documentation

Gio::DataOutputStream::DataOutputStream | ( | DataOutputStream&& | src | ) |

noexcept

virtual Gio::DataOutputStream::~DataOutputStream | ( |  | ) |

virtual noexcept

Gio::DataOutputStream::DataOutputStream | ( | const Glib::RefPtr< OutputStream >& | base_stream | ) |

explicit protected

## Member Function Documentation

static Glib::RefPtr<DataOutputStream> Gio::DataOutputStream::create | ( | const Glib::RefPtr< OutputStream >& | base_stream | ) |

static

DataStreamByteOrder Gio::DataOutputStream::get_byte_order | ( |  | ) | const

Gets the byte order for the stream.

Returns
  The DataStreamByteOrder for the stream.

static GType Gio::DataOutputStream::get_type | ( |  | ) |

static

Get the GType for this class, for use with the underlying GObject type system.

GDataOutputStream* Gio::DataOutputStream::gobj | ( |  | ) |

inline

Provides access to the underlying C GObject.

const GDataOutputStream* Gio::DataOutputStream::gobj | ( |  | ) | const

inline

Provides access to the underlying C GObject.

GDataOutputStream* Gio::DataOutputStream::gobj_copy | ( |  | ) |

Provides access to the underlying C instance. The caller is responsible for unrefing it. Use when directly setting fields in structs.

DataOutputStream& Gio::DataOutputStream::operator= | ( | DataOutputStream&& | src | ) |

noexcept

Glib::PropertyProxy< DataStreamByteOrder > Gio::DataOutputStream::property_byte_order | ( |  | ) |

Determines the byte ordering that is used when writing multi-byte entities (such as integers) to the stream.

Returns
  A PropertyProxy that allows you to get or set the value of the property, or receive notification when the value of the property changes.

Glib::PropertyProxy_ReadOnly< DataStreamByteOrder > Gio::DataOutputStream::property_byte_order | ( |  | ) | const

Determines the byte ordering that is used when writing multi-byte entities (such as integers) to the stream.

Returns
  A PropertyProxy_ReadOnly that allows you to get the value of the property, or receive notification when the value of the property changes.

bool Gio::DataOutputStream::put_byte | ( | guchar | data,
|  | const Glib::RefPtr< Cancellable >& | cancellable
| ) |  |

Puts a byte into the output stream.

Parameters

  data | A #guchar.
  cancellable | Optional Cancellable object, `0` to ignore.

Returns
  `true` if data was successfully added to the stream.

bool Gio::DataOutputStream::put_byte | ( | guchar | data | ) |

A put_byte() convenience overload.

bool Gio::DataOutputStream::put_int16 | ( | gint16 | data,
|  | const Glib::RefPtr< Cancellable >& | cancellable
| ) |  |

Puts a signed 16-bit integer into the output stream.

Parameters

  data | A #gint16.
  cancellable | Optional Cancellable object, `0` to ignore.

Returns
  `true` if data was successfully added to the stream.

bool Gio::DataOutputStream::put_int16 | ( | gint16 | data | ) |

A put_int16() convenience overload.

bool Gio::DataOutputStream::put_int32 | ( | gint32 | data,
|  | const Glib::RefPtr< Cancellable >& | cancellable
| ) |  |

Puts a signed 32-bit integer into the output stream.

Parameters

  data | A #gint32.
  cancellable | Optional Cancellable object, `0` to ignore.

Returns
  `true` if data was successfully added to the stream.

bool Gio::DataOutputStream::put_int32 | ( | gint32 | data | ) |

A put_int32() convenience overload.

bool Gio::DataOutputStream::put_int64 | ( | gint64 | data,
|  | const Glib::RefPtr< Cancellable >& | cancellable
| ) |  |

Puts a signed 64-bit integer into the stream.

Parameters

  data | A #gint64.
  cancellable | Optional Cancellable object, `0` to ignore.

Returns
  `true` if data was successfully added to the stream.

bool Gio::DataOutputStream::put_int64 | ( | gint64 | data | ) |

A put_int64() convenience overload.

bool Gio::DataOutputStream::put_string | ( | std::string | str,
|  | const Glib::RefPtr< Cancellable >& | cancellable
| ) |  |

Puts a string into the output stream.

Parameters

  str | A string.
  cancellable | Optional Cancellable object, `0` to ignore.

Returns
  `true` if string was successfully added to the stream.

bool Gio::DataOutputStream::put_string | ( | std::string | str | ) |

A put_string() convenience overload.

bool Gio::DataOutputStream::put_uint16 | ( | guint16 | data,
|  | const Glib::RefPtr< Cancellable >& | cancellable
| ) |  |

Puts an unsigned 16-bit integer into the output stream.

Parameters

  data | A #guint16.
  cancellable | Optional Cancellable object, `0` to ignore.

Returns
  `true` if data was successfully added to the stream.

bool Gio::DataOutputStream::put_uint16 | ( | guint16 | data | ) |

A put_uint16() convenience overload.

bool Gio::DataOutputStream::put_uint32 | ( | guint32 | data,
|  | const Glib::RefPtr< Cancellable >& | cancellable
| ) |  |

Puts an unsigned 32-bit integer into the stream.

Parameters

  data | A #guint32.
  cancellable | Optional Cancellable object, `0` to ignore.

Returns
  `true` if data was successfully added to the stream.

bool Gio::DataOutputStream::put_uint32 | ( | guint32 | data | ) |

A put_uint32() convenience overload.

bool Gio::DataOutputStream::put_uint64 | ( | guint64 | data,
|  | const Glib::RefPtr< Cancellable >& | cancellable
| ) |  |

Puts an unsigned 64-bit integer into the stream.

Parameters

  data | A #guint64.
  cancellable | Optional Cancellable object, `0` to ignore.

Returns
  `true` if data was successfully added to the stream.

bool Gio::DataOutputStream::put_uint64 | ( | guint64 | data | ) |

A put_uint64() convenience overload.

void Gio::DataOutputStream::set_byte_order | ( | DataStreamByteOrder | order | ) |

Sets the byte order of the data output stream to order.

Parameters

  order | A DataStreamByteOrder.

## Friends And Related Function Documentation

Glib::RefPtr< Gio::DataOutputStream > wrap | ( | GDataOutputStream * | object,
|  | bool | take_copy = `false`
| ) |  |

related

A Glib::wrap() method for this object.

Parameters

  object | The C instance.
  take_copy | False if the result should take ownership of the C instance. True if it should take a new copy or ref.

Returns
  A C++ instance that wraps this C instance.