W3cubDocs

/Qt 5.11

QDomNodeList Class

The QDomNodeList class is a list of QDomNode objects. More...

Header: #include <QDomNodeList>
qmake: QT += xml

Note: All functions in this class are reentrant.

Public Functions

QDomNodeList()
QDomNodeList(const QDomNodeList &n)
~QDomNodeList()
QDomNode at(int index) const
int count() const
bool isEmpty() const
QDomNode item(int index) const
int length() const
int size() const
bool operator!=(const QDomNodeList &n) const
QDomNodeList & operator=(const QDomNodeList &n)
bool operator==(const QDomNodeList &n) const

Detailed Description

The QDomNodeList class is a list of QDomNode objects.

Lists can be obtained by QDomDocument::elementsByTagName() and QDomNode::childNodes(). The Document Object Model (DOM) requires these lists to be "live": whenever you change the underlying document, the contents of the list will get updated.

You can get a particular node from the list with item(). The number of items in the list is returned by length().

For further information about the Document Object Model see Level 1 and Level 2 Core. For a more general introduction of the DOM implementation see the QDomDocument documentation.

See also QDomNode::childNodes() and QDomDocument::elementsByTagName().

Member Function Documentation

QDomNodeList::QDomNodeList()

Creates an empty node list.

QDomNodeList::QDomNodeList(const QDomNodeList &n)

Constructs a copy of n.

QDomNodeList::~QDomNodeList()

Destroys the object and frees its resources.

QDomNode QDomNodeList::at(int index) const

This function is provided for Qt API consistency. It is equivalent to item().

If index is negative or if index >= length() then a null node is returned (i.e. a node for which QDomNode::isNull() returns true).

int QDomNodeList::count() const

This function is provided for Qt API consistency. It is equivalent to length().

bool QDomNodeList::isEmpty() const

Returns true if the list contains no items; otherwise returns false. This function is provided for Qt API consistency.

QDomNode QDomNodeList::item(int index) const

Returns the node at position index.

If index is negative or if index >= length() then a null node is returned (i.e. a node for which QDomNode::isNull() returns true).

See also length().

int QDomNodeList::length() const

Returns the number of nodes in the list.

int QDomNodeList::size() const

This function is provided for Qt API consistency. It is equivalent to length().

bool QDomNodeList::operator!=(const QDomNodeList &n) const

Returns true the node list n and this node list are not equal; otherwise returns false.

QDomNodeList &QDomNodeList::operator=(const QDomNodeList &n)

Assigns n to this node list.

bool QDomNodeList::operator==(const QDomNodeList &n) const

Returns true if the node list n and this node list are equal; otherwise returns false.

© The Qt Company Ltd
Licensed under the GNU Free Documentation License, Version 1.3.
https://doc.qt.io/qt-5/qdomnodelist.html