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# QXmlAttributes Class Reference
[QtXml module]

The QXmlAttributes class provides XML attributes. More...

     #include <QXmlAttributes>

Note: All the functions in this class are reentrant.

- List of all members, including inherited members

### Public Functions

- QXmlAttributes ()
- virtual ~QXmlAttributes ()
- void append ( const QString & qName, const QString & uri, const QString & localPart, const QString & value )
- void clear ()
- int count () const
- int index ( const QString & qName ) const
- int index ( const QString & uri, const QString & localPart ) const
- int length () const
- QString localName ( int index ) const
- QString qName ( int index ) const
- QString type ( int index ) const
- QString type ( const QString & qName ) const
- QString type ( const QString & uri, const QString & localName ) const
- QString uri ( int index ) const
- QString value ( int index ) const
- QString value ( const QString & qName ) const
- QString value ( const QString & uri, const QString & localName ) const

## Detailed Description

The QXmlAttributes class provides XML attributes.

If attributes are reported by QXmlContentHandler::startElement() this class is used to pass the attribute values.

Use index() to locate the position of an attribute in the list, count() to retrieve the number of attributes, and clear() to remove the attributes. New attributes can be added with append(). Use type() to get an attribute's type and value() to get its value. The attribute's name is available from localName() or qName(), and its namespace URI from uri().

## Member Function Documentation

### QXmlAttributes::QXmlAttributes ()

Constructs an empty attribute list.

### QXmlAttributes::~QXmlAttributes () `[virtual]`

Destroys the attributes object.

### void QXmlAttributes::append ( const QString & qName, const QString & uri, const QString & localPart, const QString & value )

Appends a new attribute entry to the list of attributes. The qualified name of the attribute is qName, the namespace URI is uri and the local name is localPart. The value of the attribute is value.

See also qName(), uri(), localName(), and value().

### void QXmlAttributes::clear ()

Clears the list of attributes.

See also append().

### int QXmlAttributes::count () const

Returns the number of attributes in the list. This function is equivalent to length().

### int QXmlAttributes::index ( const QString & qName ) const

Looks up the index of an attribute by the qualified name qName.

Returns the index of the attribute or -1 if it wasn't found.

See also Namespace Support via Features.

### int QXmlAttributes::index ( const QString & uri, const QString & localPart ) const

This is an overloaded member function, provided for convenience.

Looks up the index of an attribute by a namespace name.

uri specifies the namespace URI, or an empty string if the name has no namespace URI. localPart specifies the attribute's local name.

Returns the index of the attribute, or -1 if it wasn't found.

See also Namespace Support via Features.

### int QXmlAttributes::length () const

Returns the number of attributes in the list.

See also count().

### QString QXmlAttributes::localName ( int index ) const

Looks up an attribute's local name for the attribute at position index. If no namespace processing is done, the local name is an empty string.

See also Namespace Support via Features.

### QString QXmlAttributes::qName ( int index ) const

Looks up an attribute's XML 1.0 qualified name for the attribute at position index.

See also Namespace Support via Features.

### QString QXmlAttributes::type ( int index ) const

Looks up an attribute's type for the attribute at position index.

Currently only "CDATA" is returned.

### QString QXmlAttributes::type ( const QString & qName ) const

This is an overloaded member function, provided for convenience.

Looks up an attribute's type for the qualified name qName.

Currently only "CDATA" is returned.

### QString QXmlAttributes::type ( const QString & uri, const QString & localName ) const

This is an overloaded member function, provided for convenience.

Looks up an attribute's type by namespace name.

uri specifies the namespace URI and localName specifies the local name. If the name has no namespace URI, use an empty string for uri.

Currently only "CDATA" is returned.

### QString QXmlAttributes::uri ( int index ) const

Looks up an attribute's namespace URI for the attribute at position index. If no namespace processing is done or if the attribute has no namespace, the namespace URI is an empty string.

See also Namespace Support via Features.

### QString QXmlAttributes::value ( int index ) const

Returns an attribute's value for the attribute at position index. The index must be a valid position (i.e., 0 <= index < count()).

### QString QXmlAttributes::value ( const QString & qName ) const

This is an overloaded member function, provided for convenience.

Returns an attribute's value for the qualified name qName, or an empty string if no attribute exists for the name given.

See also Namespace Support via Features.

### QString QXmlAttributes::value ( const QString & uri, const QString & localName ) const

This is an overloaded member function, provided for convenience.

Returns an attribute's value by namespace name.

uri specifies the namespace URI, or an empty string if the name has no namespace URI. localName specifies the attribute's local name.