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# QXmlDeclHandler Class Reference
[ XML module ]

The QXmlDeclHandler class provides an interface to report declaration content of XML data. More...

`#include <qxml.h>`

Inherited by QXmlDefaultHandler.

List of all member functions.

## Public Members

- virtual bool attributeDecl ( const QString & eName, const QString & aName, const QString & type, const QString & valueDefault, const QString & value )
- virtual bool internalEntityDecl ( const QString & name, const QString & value )
- virtual bool externalEntityDecl ( const QString & name, const QString & publicId, const QString & systemId )
- virtual QString errorString ()

## Detailed Description

The QXmlDeclHandler class provides an interface to report declaration content of XML data.

You can set the declaration handler with QXmlReader::setDeclHandler().

This interface is designed after the SAX2 extension DeclHandler.

See also the Introduction to SAX2.

See also QXmlDTDHandler, QXmlContentHandler, QXmlEntityResolver, QXmlErrorHandler and QXmlLexicalHandler.

## Member Function Documentation

### bool QXmlDeclHandler::attributeDecl ( const QString & eName, const QString & aName, const QString & type, const QString & valueDefault, const QString & value ) `[virtual]`

The reader calls this function to report an attribute type declaration. Only the effective (first) declaration for an attribute will be reported.

If this function returns FALSE the reader will stop parsing and will report an error. The reader will use the function errorString() to get the error message that will be used for reporting the error.

Reimplemented in QXmlDefaultHandler.

### QString QXmlDeclHandler::errorString () `[virtual]`

The reader calls this function to get an error string if any of the handler functions returns FALSE to him.

### bool QXmlDeclHandler::externalEntityDecl ( const QString & name, const QString & publicId, const QString & systemId ) `[virtual]`

The reader calls this function to report a parsed external entity declaration. Only the effective (first) declaration for each entity will be reported.

If this function returns FALSE the reader will stop parsing and will report an error. The reader will use the function errorString() to get the error message that will be used for reporting the error.

Reimplemented in QXmlDefaultHandler.

### bool QXmlDeclHandler::internalEntityDecl ( const QString & name, const QString & value ) `[virtual]`

The reader calls this function to report an internal entity declaration. Only the effective (first) declaration will be reported.

If this function returns FALSE the reader will stop parsing and will report an error. The reader will use the function errorString() to get the error message that will be used for reporting the error.

Reimplemented in QXmlDefaultHandler.

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