Glib::VariantIter Class Reference

VariantIter - An opaque data structure used to iterate through VariantBase containers such as arrays. More...

#include <glibmm/variantiter.h>

Public Member Functions
	VariantIter ()
	Constructs an invalid object.
	VariantIter (GVariantIter * castitem, bool make_a_copy=false)
	VariantIter (const VariantIter & src)
VariantIter &	operator= (const VariantIter & src)
	VariantIter (VariantIter && other) noexcept
VariantIter &	operator= (VariantIter && other) noexcept
	~VariantIter () noexcept
void	swap (VariantIter & other) noexcept
GVariantIter *	gobj ()
const GVariantIter *	gobj () const
GVariantIter *	gobj_copy () const
	Provides access to the underlying C instance. The caller is responsible for freeing it. Use when directly setting fields in structs.
	VariantIter (const VariantBase & variant)
gsize	init (const VariantContainerBase & value)
	Initialises (without allocating) a VariantIter.
gsize	get_n_children () const
	Queries the number of child items in the container that we are iterating over.
bool	next_value (VariantBase & value)

Protected Attributes
GVariantIter *	gobject_

Related Symbols
(Note that these are not member symbols.)
void	swap (VariantIter & lhs, VariantIter & rhs) noexcept
Glib::VariantIter	wrap (GVariantIter * object, bool take_copy=false)
	A Glib::wrap() method for this object.

Detailed Description

VariantIter - An opaque data structure used to iterate through VariantBase containers such as arrays.

Since glibmm 2.28

Constructor & Destructor Documentation

VariantIter() [1/5]

Glib::VariantIter::VariantIter

(

)

Constructs an invalid object.

E.g. for output arguments to methods. There is not much you can do with the object before it has been assigned a valid value.

VariantIter() [2/5]

Glib::VariantIter::VariantIter ( GVariantIter * castitem, bool make_a_copy = false )

explicit

VariantIter() [3/5]

Glib::VariantIter::VariantIter

(

const VariantIter &

src

)

VariantIter() [4/5]

Glib::VariantIter::VariantIter ( VariantIter && other )

noexcept

~VariantIter()

Glib::VariantIter::~VariantIter ( )

noexcept

VariantIter() [5/5]

Glib::VariantIter::VariantIter ( const VariantBase & variant )

explicit

Member Function Documentation

get_n_children()

gsize Glib::VariantIter::get_n_children

(

)

const

Queries the number of child items in the container that we are iterating over.

This is the total number of items – not the number of items remaining.

This function might be useful for preallocation of arrays.

Since glibmm 2.24

Returns

The number of children in the container.

gobj() [1/2]

GVariantIter * Glib::VariantIter::gobj ( )

inline

gobj() [2/2]

const GVariantIter * Glib::VariantIter::gobj ( ) const

inline

gobj_copy()

GVariantIter * Glib::VariantIter::gobj_copy

(

)

const

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

init()

gsize Glib::VariantIter::init

(

const VariantContainerBase &

value

)

Initialises (without allocating) a VariantIter.

iter may be completely uninitialised prior to this call; its old value is ignored.

The iterator remains valid for as long as value exists, and need not be freed in any way.

Since glibmm 2.24

Parameters

value

A container Variant.

Returns

The number of items in value.

next_value()

bool Glib::VariantIter::next_value

(

VariantBase &

value

)

operator=() [1/2]

VariantIter & Glib::VariantIter::operator=

(

const VariantIter &

src

)

operator=() [2/2]

VariantIter & Glib::VariantIter::operator= ( VariantIter && other )

noexcept

swap()

void Glib::VariantIter::swap ( VariantIter & other )

noexcept

Friends And Related Symbol Documentation

swap()

void swap ( VariantIter & lhs, VariantIter & rhs )

related

Parameters

lhs	The left-hand side
rhs	The right-hand side

wrap()

Glib::VariantIter wrap ( GVariantIter * 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.

Member Data Documentation

gobject_

GVariantIter* Glib::VariantIter::gobject_

protected