QDomDocumentFragment 类

QDomDocumentFragment 类 QDomNode 树通常是不完整 QDomDocument . 更多...

头：	#include <QDomDocumentFragment>
CMake:	find_package(Qt6 REQUIRED COMPONENTS Xml) target_link_libraries(mytarget PRIVATE Qt6::Xml)
qmake:	QT += xml
继承：	QDomNode

所有成员列表，包括继承成员
QDomDocumentFragment is part of XML 类 .

注意： 此类的所有函数可重入 .

公共函数

	QDomDocumentFragment ()
	QDomDocumentFragment (const QDomDocumentFragment & x )
QDomNode::NodeType	nodeType () const
QDomDocumentFragment &	operator= (const QDomDocumentFragment & x )

详细描述

If you want to do complex tree operations it is useful to have a lightweight class to store nodes and their relations. QDomDocumentFragment stores a subtree of a document which does not necessarily represent a well-formed XML document.

QDomDocumentFragment is also useful if you want to group several nodes in a list and insert them all together as children of some node. In these cases QDomDocumentFragment can be used as a temporary container for this list of children.

The most important feature of QDomDocumentFragment is that it is treated in a special way by QDomNode::insertAfter (), QDomNode::insertBefore (), QDomNode::replaceChild () 和 QDomNode::appendChild ()：代替插入片段本身，插入所有片段的子级。

成员函数文档编制

QDomDocumentFragment:: QDomDocumentFragment ()

构造空文档片段。

QDomDocumentFragment:: QDomDocumentFragment (const QDomDocumentFragment & x )

构造副本为 x .

拷贝数据是共享的 (浅拷贝)：修改一节点也会改变另一节点。若想要做深拷贝，使用 cloneNode ().

QDomNode::NodeType QDomDocumentFragment:: nodeType () const

返回 DocumentFragment .

另请参阅 isDocumentFragment () 和 QDomNode::toDocumentFragment ().

QDomDocumentFragment &QDomDocumentFragment:: operator= (const QDomDocumentFragment & x )

赋值 x 到此 DOM 文档片段。

拷贝数据是共享的 (浅拷贝)：修改一节点也会改变另一节点。若想要做深拷贝，使用 cloneNode ().