QXmlStreamAttributes 类表示向量为 QXmlStreamAttribute . 更多...
| 头： | #include <QXmlStreamAttributes> |
| CMake: |
find_package(Qt6 REQUIRED COMPONENTS Core)
target_link_libraries(mytarget PRIVATE Qt6::Core) |
| qmake: | QT += core |
| 继承： | QList |
注意： 此类的所有函数 可重入 .
| QXmlStreamAttributes () | |
| void | append (const QString & namespaceUri , const QString & name , const QString & value ) |
| void | append (const QString & qualifiedName , const QString & value ) |
| bool | hasAttribute (QAnyStringView qualifiedName ) const |
| bool | hasAttribute (QAnyStringView namespaceUri , QAnyStringView name ) const |
| QStringView | value (QAnyStringView namespaceUri , QAnyStringView name ) const |
| QStringView | value (QAnyStringView qualifiedName ) const |
Attributes are returned by a QXmlStreamReader in 属性 () when the reader reports a start element . The class can also be used with a QXmlStreamWriter as an argument to writeAttributes ().
The convenience function value () loops over the vector and returns an attribute value for a given namespaceUri and an attribute's name.
New attributes can be added with append ().
A constructor for QXmlStreamAttributes.
Appends a new attribute with name in the namespace described with namespaceUri , and value value 。 namespaceUri can be empty.
这是重载函数。
Appends a new attribute with qualified name qualifiedName and value value .
返回
true
若此
QXmlStreamAttributes
has an attribute whose qualified name is
qualifiedName
；否则返回
false
.
Note that this is not namespace aware. For instance, if this
QXmlStreamAttributes
contains an attribute whose lexical name is "xlink:href" this doesn't tell that an attribute named
href
in the XLink namespace is present, since the
xlink
prefix can be bound to any namespace. Use the overload that takes a namespace URI and a local name as parameter, for namespace aware code.
这是重载函数。
返回
true
若此
QXmlStreamAttributes
has an attribute whose namespace URI and name correspond to
namespaceUri
and
name
；否则返回
false
.
[noexcept]
QStringView
QXmlStreamAttributes::
value
(
QAnyStringView
namespaceUri
,
QAnyStringView
name
) const
Returns the value of the attribute name in the namespace described with namespaceUri , or an empty string reference if the attribute is not defined. The namespaceUri can be empty.
注意： In Qt versions prior to 6.6, this function was implemented as an overload set accepting combinations of QString and QLatin1StringView 仅。
[noexcept]
QStringView
QXmlStreamAttributes::
value
(
QAnyStringView
qualifiedName
) const
这是重载函数。
Returns the value of the attribute with qualified name qualifiedName , or an empty string reference if the attribute is not defined. A qualified name is the raw name of an attribute in the XML data. It consists of the namespace prefix, followed by colon, followed by the attribute's local name. Since the namespace prefix is not unique (the same prefix can point to different namespaces and different prefixes can point to the same namespace), you shouldn't use qualified names, but a resolved namespaceUri and the attribute's local name.
注意： In Qt versions prior to 6.6, this function was implemented as an overload set accepting QString and QLatin1StringView 仅。