QXmlStreamAttributes 类

QXmlStreamAttributes 类表示向量为 QXmlStreamAttribute . 更多...

头: #include <QXmlStreamAttributes>
qmake: QT += core
Since: Qt 4.3
继承: QVector

该类在 Qt 4.3 引入。

注意: 此类的所有函数 可重入 .

公共函数

QXmlStreamAttributes ()
void append (const QString & namespaceUri , const QString & name , const QString & value )
void append (const QString & qualifiedName , const QString & value )
bool hasAttribute (const QString & qualifiedName ) const
bool hasAttribute (QLatin1String qualifiedName ) const
bool hasAttribute (const QString & namespaceUri , const QString & name ) const
QStringRef value (const QString & namespaceUri , const QString & name ) const
QStringRef value (const QString & namespaceUri , QLatin1String name ) const
QStringRef value (QLatin1String namespaceUri , QLatin1String name ) const
QStringRef value (const QString & qualifiedName ) const
QStringRef value (QLatin1String qualifiedName ) const

详细描述

Attributes are returned by a QXmlStreamReader in attributes() 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 ().

成员函数文档编制

QXmlStreamAttributes:: QXmlStreamAttributes ()

A constructor for QXmlStreamAttributes.

void QXmlStreamAttributes:: append (const QString & namespaceUri , const QString & name , const QString & value )

Appends a new attribute with name in the namespace described with namespaceUri , and value value namespaceUri can be empty.

void QXmlStreamAttributes:: append (const QString & qualifiedName , const QString & value )

这是重载函数。

Appends a new attribute with qualified name qualifiedName and value value .

bool QXmlStreamAttributes:: hasAttribute (const QString & qualifiedName ) const

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.

该函数在 Qt 4.5 引入。

bool QXmlStreamAttributes:: hasAttribute ( QLatin1String qualifiedName ) const

这是重载函数。

该函数在 Qt 4.5 引入。

bool QXmlStreamAttributes:: hasAttribute (const QString & namespaceUri , const QString & name ) const

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 .

该函数在 Qt 4.5 引入。

QStringRef QXmlStreamAttributes:: value (const QString & namespaceUri , const QString & 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.

QStringRef QXmlStreamAttributes:: value (const QString & namespaceUri , QLatin1String name ) const

这是重载函数。

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.

QStringRef QXmlStreamAttributes:: value ( QLatin1String namespaceUri , QLatin1String name ) const

这是重载函数。

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.

QStringRef QXmlStreamAttributes:: value (const QString & 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.

QStringRef QXmlStreamAttributes:: value ( QLatin1String 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.