QDomNodeList 類

QDomNodeList 類是列錶在 QDomNode 對象。 更多...

頭：	#include <QDomNodeList>
CMake:	find_package(Qt6 REQUIRED COMPONENTS Xml) target_link_libraries(mytarget PRIVATE Qt6::Xml)
qmake:	QT += xml

• 所有成員列錶，包括繼承成員
• QDomNodeList is part of XML 類 .

注意： 此類的所有函數 可重入 .

公共類型

(從 6.9 起)	const_iterator
(從 6.9 起)	const_pointer
(從 6.9 起)	const_reference
(從 6.9 起)	const_reverse_iterator
(從 6.9 起)	difference_type
(從 6.9 起)	pointer
(從 6.9 起)	reference
(從 6.9 起)	value_type

公共函數

	QDomNodeList ()
	QDomNodeList (const QDomNodeList & nodeList )
	~QDomNodeList ()
QDomNode	at (int index ) const
(從 6.9 起) QDomNodeList::const_iterator	begin () const
(從 6.9 起) QDomNodeList::const_iterator	cbegin () const
(從 6.9 起) QDomNodeList::const_iterator	cend () const
(從 6.9 起) QDomNodeList::const_iterator	constBegin () const
(從 6.9 起) QDomNodeList::const_iterator	constEnd () const
int	count () const
(從 6.9 起) QDomNodeList::const_reverse_iterator	crbegin () const
(從 6.9 起) QDomNodeList::const_reverse_iterator	crend () const
(從 6.9 起) QDomNodeList::const_iterator	end () const
bool	isEmpty () const
QDomNode	item (int index ) const
int	length () const
(從 6.9 起) QDomNodeList::const_reverse_iterator	rbegin () const
(從 6.9 起) QDomNodeList::const_reverse_iterator	rend () const
int	size () const
QDomNodeList &	operator= (const QDomNodeList & other )

相關非成員

bool	operator!= (const QDomNodeList & lhs , const QDomNodeList & rhs )
bool	operator== (const QDomNodeList & lhs , const QDomNodeList & rhs )

詳細描述

列錶的獲得可以通過 QDomDocument::elementsByTagName () 和 QDomNode::childNodes ()。DOM (文檔對象模型) 要求這些列錶是 "實時" 的：每當改變底層文檔時，會更新列錶內容。

可以從列錶獲取特定節點采用 item ()。列錶項數的返迴是通過 length ().

有關文檔對象模型的進一步信息，見 級彆 1 and 級彆 2 核心 。有關 DOM 實現的更一般介紹，見 QDomDocument 文檔編製。

另請參閱 QDomNode::childNodes () 和 QDomDocument::elementsByTagName ().

成員類型文檔編製

[alias, since 6.9] QDomNodeList:: const_iterator

[alias, since 6.9] QDomNodeList:: const_reverse_iterator

Typedefs for an opaque class that implements a bidirectional iterator over a QDomNodeList .

注意： QDomNodeList does not support modifying nodes in-place, so there is no mutable iterator.

These typedefs were introduced in Qt 6.9.

[alias, since 6.9] QDomNodeList:: const_pointer

[alias, since 6.9] QDomNodeList:: const_reference

[alias, since 6.9] QDomNodeList:: difference_type

[alias, since 6.9] QDomNodeList:: pointer

[alias, since 6.9] QDomNodeList:: reference

[alias, since 6.9] QDomNodeList:: value_type

Provided for STL-compatibility.

注意： QDomNodeList does not support modifying nodes in-place, so reference and const_reference are the same type, as are pointer and const_pointer .

These typedefs were introduced in Qt 6.9.

成員函數文檔編製

[noexcept, since 6.9] QDomNodeList::const_iterator QDomNodeList:: begin () const

[noexcept, since 6.9] QDomNodeList::const_iterator QDomNodeList:: cbegin () const

[noexcept, since 6.9] QDomNodeList::const_iterator QDomNodeList:: cend () const

[noexcept, since 6.9] QDomNodeList::const_iterator QDomNodeList:: constBegin () const

[noexcept, since 6.9] QDomNodeList::const_iterator QDomNodeList:: constEnd () const

[noexcept, since 6.9] QDomNodeList::const_iterator QDomNodeList:: end () const

[noexcept, since 6.9] QDomNodeList::const_reverse_iterator QDomNodeList:: crbegin () const

[noexcept, since 6.9] QDomNodeList::const_reverse_iterator QDomNodeList:: crend () const

[noexcept, since 6.9] QDomNodeList::const_reverse_iterator QDomNodeList:: rbegin () const

[noexcept, since 6.9] QDomNodeList::const_reverse_iterator QDomNodeList:: rend () const

返迴 const_iterator or const_reverse_iterator , respectively, pointing to the first or one past the last item in the list.

注意： QDomNodeList does not support modifying nodes in-place, so there is no mutable iterator.

這些函數在 Qt 6.9 引入。

QDomNodeList:: QDomNodeList ()

創建空節點列錶。

QDomNodeList:: QDomNodeList (const QDomNodeList & nodeList )

構造副本為 nodeList .

[noexcept] QDomNodeList:: ~QDomNodeList ()

銷毀對象並釋放其資源。

QDomNode QDomNodeList:: at ( int index ) const

提供此函數是為 Qt API 一緻性。它相當於 item ().

若 index 為負或者若 index >= length () 則返迴 null 節點 (即：節點的 QDomNode::isNull () 返迴 true)。

int QDomNodeList:: count () const

提供此函數是為 Qt API 一緻性。它相當於 length ().

bool QDomNodeList:: isEmpty () const

返迴 true 若列錶不包含項；否則返迴 false 。此函數是為 Qt API 一緻性提供的。

QDomNode QDomNodeList:: item ( int index ) const

返迴節點在位置 index .

若 index 為負或者若 index >= length () 則返迴 null 節點 (即：節點的 QDomNode::isNull () 返迴 true)。

另請參閱 length ().

int QDomNodeList:: length () const

返迴列錶節點數。

int QDomNodeList:: size () const

提供此函數是為 Qt API 一緻性。它相當於 length ().

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

賦值 other 到此節點列錶。

相關非成員

[noexcept] bool operator!= (const QDomNodeList & lhs , const QDomNodeList & rhs )

返迴 true if the node lists lhs and rhs 不相等；則返迴 false .

[noexcept] bool operator== (const QDomNodeList & lhs , const QDomNodeList & rhs )

返迴 true if the node lists lhs and rhs 相等；否則返迴 false .

內容

1. 公共類型

2. 公共函數

3. 相關非成員

4. 詳細描述