QDomDocumentFragment 类 QDomNode 树通常是不完整 QDomDocument . 更多...
| 头： | #include <QDomDocumentFragment> |
| CMake: |
find_package(Qt6 COMPONENTS Xml REQUIRED)
target_link_libraries(mytarget PRIVATE Qt6::Xml) |
| qmake: | QT += xml |
| 继承： | QDomNode |
注意： 此类的所有函数 可重入 .
| QDomDocumentFragment (const QDomDocumentFragment & x ) | |
| QDomDocumentFragment () | |
| QDomDocumentFragment & | operator= (const QDomDocumentFragment & x ) |
| QDomNode::NodeType | nodeType () const |
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。
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 ().
构造空文档片段。
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 ().
返回
DocumentFragment
.
另请参阅 isDocumentFragment () 和 QDomNode::toDocumentFragment ().
