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<h1 class="title">QXmlReader Class Reference</h1>
<!-- $$$QXmlReader-brief -->
<p>The QXmlReader class provides an interface for XML readers (i.e. parsers). <a href="#details">More...</a></p>
<!-- @@@QXmlReader -->
<pre class="cpp"> <span class="preprocessor">#include <QXmlReader></span></pre><p><b>Inherited by: </b><a href="qxmlsimplereader.html">QXmlSimpleReader</a>.</p>
<p><b>Note:</b> All functions in this class are <a href="threads-reentrancy.html#reentrant">reentrant</a>.</p>
<ul>
<li><a href="qxmlreader-members.html">List of all members, including inherited members</a></li>
<li><a href="qxmlreader-obsolete.html">Obsolete members</a></li>
</ul>
<a name="public-functions"></a>
<h2>Public Functions</h2>
<table class="alignedsummary">
<tr><td class="memItemLeft rightAlign topAlign"> virtual </td><td class="memItemRight bottomAlign"><b><a href="qxmlreader.html#dtor.QXmlReader">~QXmlReader</a></b> ()</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> virtual QXmlDTDHandler * </td><td class="memItemRight bottomAlign"><b><a href="qxmlreader.html#DTDHandler">DTDHandler</a></b> () const = 0</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> virtual QXmlContentHandler * </td><td class="memItemRight bottomAlign"><b><a href="qxmlreader.html#contentHandler">contentHandler</a></b> () const = 0</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> virtual QXmlDeclHandler * </td><td class="memItemRight bottomAlign"><b><a href="qxmlreader.html#declHandler">declHandler</a></b> () const = 0</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> virtual QXmlEntityResolver * </td><td class="memItemRight bottomAlign"><b><a href="qxmlreader.html#entityResolver">entityResolver</a></b> () const = 0</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> virtual QXmlErrorHandler * </td><td class="memItemRight bottomAlign"><b><a href="qxmlreader.html#errorHandler">errorHandler</a></b> () const = 0</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> virtual bool </td><td class="memItemRight bottomAlign"><b><a href="qxmlreader.html#feature">feature</a></b> ( const QString & <i>name</i>, bool * <i>ok</i> = 0 ) const = 0</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> virtual bool </td><td class="memItemRight bottomAlign"><b><a href="qxmlreader.html#hasFeature">hasFeature</a></b> ( const QString & <i>name</i> ) const = 0</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> virtual bool </td><td class="memItemRight bottomAlign"><b><a href="qxmlreader.html#hasProperty">hasProperty</a></b> ( const QString & <i>name</i> ) const = 0</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> virtual QXmlLexicalHandler * </td><td class="memItemRight bottomAlign"><b><a href="qxmlreader.html#lexicalHandler">lexicalHandler</a></b> () const = 0</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> virtual bool </td><td class="memItemRight bottomAlign"><b><a href="qxmlreader.html#parse">parse</a></b> ( const QXmlInputSource * <i>input</i> ) = 0</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> virtual void * </td><td class="memItemRight bottomAlign"><b><a href="qxmlreader.html#property">property</a></b> ( const QString & <i>name</i>, bool * <i>ok</i> = 0 ) const = 0</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> virtual void </td><td class="memItemRight bottomAlign"><b><a href="qxmlreader.html#setContentHandler">setContentHandler</a></b> ( QXmlContentHandler * <i>handler</i> ) = 0</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> virtual void </td><td class="memItemRight bottomAlign"><b><a href="qxmlreader.html#setDTDHandler">setDTDHandler</a></b> ( QXmlDTDHandler * <i>handler</i> ) = 0</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> virtual void </td><td class="memItemRight bottomAlign"><b><a href="qxmlreader.html#setDeclHandler">setDeclHandler</a></b> ( QXmlDeclHandler * <i>handler</i> ) = 0</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> virtual void </td><td class="memItemRight bottomAlign"><b><a href="qxmlreader.html#setEntityResolver">setEntityResolver</a></b> ( QXmlEntityResolver * <i>handler</i> ) = 0</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> virtual void </td><td class="memItemRight bottomAlign"><b><a href="qxmlreader.html#setErrorHandler">setErrorHandler</a></b> ( QXmlErrorHandler * <i>handler</i> ) = 0</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> virtual void </td><td class="memItemRight bottomAlign"><b><a href="qxmlreader.html#setFeature">setFeature</a></b> ( const QString & <i>name</i>, bool <i>value</i> ) = 0</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> virtual void </td><td class="memItemRight bottomAlign"><b><a href="qxmlreader.html#setLexicalHandler">setLexicalHandler</a></b> ( QXmlLexicalHandler * <i>handler</i> ) = 0</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> virtual void </td><td class="memItemRight bottomAlign"><b><a href="qxmlreader.html#setProperty">setProperty</a></b> ( const QString & <i>name</i>, void * <i>value</i> ) = 0</td></tr>
</table>
<a name="details"></a>
<!-- $$$QXmlReader-description -->
<div class="descr">
<h2>Detailed Description</h2>
<p>The QXmlReader class provides an interface for XML readers (i.e. parsers).</p>
<p>This abstract class provides an interface for all of Qt's XML readers. Currently there is only one implementation of a reader included in Qt's XML module: <a href="qxmlsimplereader.html">QXmlSimpleReader</a>. In future releases there might be more readers with different properties available (e.g. a validating parser).</p>
<p>The design of the XML classes follows the <a href="http://www.saxproject.org/">SAX2 Java interface</a>, with the names adapted to fit Qt naming conventions. It should be very easy for anybody who has worked with SAX2 to get started with the Qt XML classes.</p>
<p>All readers use the class <a href="qxmlinputsource.html">QXmlInputSource</a> to read the input document. Since you are normally interested in particular content in the XML document, the reader reports the content through special handler classes (<a href="qxmldtdhandler.html">QXmlDTDHandler</a>, <a href="qxmldeclhandler.html">QXmlDeclHandler</a>, <a href="qxmlcontenthandler.html">QXmlContentHandler</a>, <a href="qxmlentityresolver.html">QXmlEntityResolver</a>, <a href="qxmlerrorhandler.html">QXmlErrorHandler</a> and <a href="qxmllexicalhandler.html">QXmlLexicalHandler</a>), which you must subclass, if you want to process the contents.</p>
<p>Since the handler classes only describe interfaces you must implement all the functions. We provide the <a href="qxmldefaulthandler.html">QXmlDefaultHandler</a> class to make this easier: it implements a default behavior (do nothing) for all functions, so you can subclass it and just implement the functions you are interested in.</p>
<p>Features and properties of the reader can be set with <a href="qxmlreader.html#setFeature">setFeature</a>() and <a href="qxmlreader.html#setProperty">setProperty</a>() respectively. You can set the reader to use your own subclasses with <a href="qxmlreader.html#setEntityResolver">setEntityResolver</a>(), <a href="qxmlreader.html#setDTDHandler">setDTDHandler</a>(), <a href="qxmlreader.html#setContentHandler">setContentHandler</a>(), <a href="qxmlreader.html#setErrorHandler">setErrorHandler</a>(), <a href="qxmlreader.html#setLexicalHandler">setLexicalHandler</a>() and <a href="qxmlreader.html#setDeclHandler">setDeclHandler</a>(). The parse itself is started with a call to <a href="qxmlreader.html#parse">parse</a>().</p>
</div>
<p><b>See also </b><a href="qxmlsimplereader.html">QXmlSimpleReader</a>.</p>
<!-- @@@QXmlReader -->
<div class="func">
<h2>Member Function Documentation</h2>
<!-- $$$~QXmlReader[overload1]$$$~QXmlReader -->
<h3 class="fn"><a name="dtor.QXmlReader"></a>QXmlReader::<span class="name">~QXmlReader</span> ()<tt> [virtual]</tt></h3>
<p>Destroys the reader.</p>
<!-- @@@~QXmlReader -->
<!-- $$$DTDHandler[overload1]$$$DTDHandler -->
<h3 class="fn"><a name="DTDHandler"></a><span class="type"><a href="qxmldtdhandler.html">QXmlDTDHandler</a></span> * QXmlReader::<span class="name">DTDHandler</span> () const<tt> [pure virtual]</tt></h3>
<p>Returns the DTD handler or 0 if none was set.</p>
<p><b>See also </b><a href="qxmlreader.html#setDTDHandler">setDTDHandler</a>().</p>
<!-- @@@DTDHandler -->
<!-- $$$contentHandler[overload1]$$$contentHandler -->
<h3 class="fn"><a name="contentHandler"></a><span class="type"><a href="qxmlcontenthandler.html">QXmlContentHandler</a></span> * QXmlReader::<span class="name">contentHandler</span> () const<tt> [pure virtual]</tt></h3>
<p>Returns the content handler or 0 if none was set.</p>
<p><b>See also </b><a href="qxmlreader.html#setContentHandler">setContentHandler</a>().</p>
<!-- @@@contentHandler -->
<!-- $$$declHandler[overload1]$$$declHandler -->
<h3 class="fn"><a name="declHandler"></a><span class="type"><a href="qxmldeclhandler.html">QXmlDeclHandler</a></span> * QXmlReader::<span class="name">declHandler</span> () const<tt> [pure virtual]</tt></h3>
<p>Returns the declaration handler or 0 if none was set.</p>
<p><b>See also </b><a href="qxmlreader.html#setDeclHandler">setDeclHandler</a>().</p>
<!-- @@@declHandler -->
<!-- $$$entityResolver[overload1]$$$entityResolver -->
<h3 class="fn"><a name="entityResolver"></a><span class="type"><a href="qxmlentityresolver.html">QXmlEntityResolver</a></span> * QXmlReader::<span class="name">entityResolver</span> () const<tt> [pure virtual]</tt></h3>
<p>Returns the entity resolver or 0 if none was set.</p>
<p><b>See also </b><a href="qxmlreader.html#setEntityResolver">setEntityResolver</a>().</p>
<!-- @@@entityResolver -->
<!-- $$$errorHandler[overload1]$$$errorHandler -->
<h3 class="fn"><a name="errorHandler"></a><span class="type"><a href="qxmlerrorhandler.html">QXmlErrorHandler</a></span> * QXmlReader::<span class="name">errorHandler</span> () const<tt> [pure virtual]</tt></h3>
<p>Returns the error handler or 0 if none is set.</p>
<p><b>See also </b><a href="qxmlreader.html#setErrorHandler">setErrorHandler</a>().</p>
<!-- @@@errorHandler -->
<!-- $$$feature[overload1]$$$featureconstQString&bool* -->
<h3 class="fn"><a name="feature"></a><span class="type">bool</span> QXmlReader::<span class="name">feature</span> ( const <span class="type"><a href="qstring.html">QString</a></span> & <i>name</i>, <span class="type">bool</span> * <i>ok</i> = 0 ) const<tt> [pure virtual]</tt></h3>
<p>If the reader has the feature called <i>name</i>, the feature's value is returned. If no such feature exists the return value is undefined.</p>
<p>If <i>ok</i> is not 0: <tt>*</tt><i>ok</i> is set to true if the reader has the feature called <i>name</i>; otherwise <tt>*</tt><i>ok</i> is set to false.</p>
<p><b>See also </b><a href="qxmlreader.html#setFeature">setFeature</a>() and <a href="qxmlreader.html#hasFeature">hasFeature</a>().</p>
<!-- @@@feature -->
<!-- $$$hasFeature[overload1]$$$hasFeatureconstQString& -->
<h3 class="fn"><a name="hasFeature"></a><span class="type">bool</span> QXmlReader::<span class="name">hasFeature</span> ( const <span class="type"><a href="qstring.html">QString</a></span> & <i>name</i> ) const<tt> [pure virtual]</tt></h3>
<p>Returns <tt>true</tt> if the reader has the feature called <i>name</i>; otherwise returns false.</p>
<p><b>See also </b><a href="qxmlreader.html#feature">feature</a>() and <a href="qxmlreader.html#setFeature">setFeature</a>().</p>
<!-- @@@hasFeature -->
<!-- $$$hasProperty[overload1]$$$hasPropertyconstQString& -->
<h3 class="fn"><a name="hasProperty"></a><span class="type">bool</span> QXmlReader::<span class="name">hasProperty</span> ( const <span class="type"><a href="qstring.html">QString</a></span> & <i>name</i> ) const<tt> [pure virtual]</tt></h3>
<p>Returns true if the reader has the property <i>name</i>; otherwise returns false.</p>
<p><b>See also </b><a href="qxmlreader.html#property">property</a>() and <a href="qxmlreader.html#setProperty">setProperty</a>().</p>
<!-- @@@hasProperty -->
<!-- $$$lexicalHandler[overload1]$$$lexicalHandler -->
<h3 class="fn"><a name="lexicalHandler"></a><span class="type"><a href="qxmllexicalhandler.html">QXmlLexicalHandler</a></span> * QXmlReader::<span class="name">lexicalHandler</span> () const<tt> [pure virtual]</tt></h3>
<p>Returns the lexical handler or 0 if none was set.</p>
<p><b>See also </b><a href="qxmlreader.html#setLexicalHandler">setLexicalHandler</a>().</p>
<!-- @@@lexicalHandler -->
<!-- $$$parse[overload1]$$$parseconstQXmlInputSource* -->
<h3 class="fn"><a name="parse"></a><span class="type">bool</span> QXmlReader::<span class="name">parse</span> ( const <span class="type"><a href="qxmlinputsource.html">QXmlInputSource</a></span> * <i>input</i> )<tt> [pure virtual]</tt></h3>
<p>Reads an XML document from <i>input</i> and parses it. Returns true if the parsing was successful; otherwise returns false.</p>
<!-- @@@parse -->
<!-- $$$property[overload1]$$$propertyconstQString&bool* -->
<h3 class="fn"><a name="property"></a><span class="type">void</span> * QXmlReader::<span class="name">property</span> ( const <span class="type"><a href="qstring.html">QString</a></span> & <i>name</i>, <span class="type">bool</span> * <i>ok</i> = 0 ) const<tt> [pure virtual]</tt></h3>
<p>If the reader has the property <i>name</i>, this function returns the value of the property; otherwise the return value is undefined.</p>
<p>If <i>ok</i> is not 0: if the reader has the <i>name</i> property <tt>*</tt><i>ok</i> is set to true; otherwise <tt>*</tt><i>ok</i> is set to false.</p>
<p><b>See also </b><a href="qxmlreader.html#setProperty">setProperty</a>() and <a href="qxmlreader.html#hasProperty">hasProperty</a>().</p>
<!-- @@@property -->
<!-- $$$setContentHandler[overload1]$$$setContentHandlerQXmlContentHandler* -->
<h3 class="fn"><a name="setContentHandler"></a><span class="type">void</span> QXmlReader::<span class="name">setContentHandler</span> ( <span class="type"><a href="qxmlcontenthandler.html">QXmlContentHandler</a></span> * <i>handler</i> )<tt> [pure virtual]</tt></h3>
<p>Sets the content handler to <i>handler</i>.</p>
<p><b>See also </b><a href="qxmlreader.html#contentHandler">contentHandler</a>().</p>
<!-- @@@setContentHandler -->
<!-- $$$setDTDHandler[overload1]$$$setDTDHandlerQXmlDTDHandler* -->
<h3 class="fn"><a name="setDTDHandler"></a><span class="type">void</span> QXmlReader::<span class="name">setDTDHandler</span> ( <span class="type"><a href="qxmldtdhandler.html">QXmlDTDHandler</a></span> * <i>handler</i> )<tt> [pure virtual]</tt></h3>
<p>Sets the DTD handler to <i>handler</i>.</p>
<p><b>See also </b><a href="qxmlreader.html#DTDHandler">DTDHandler</a>().</p>
<!-- @@@setDTDHandler -->
<!-- $$$setDeclHandler[overload1]$$$setDeclHandlerQXmlDeclHandler* -->
<h3 class="fn"><a name="setDeclHandler"></a><span class="type">void</span> QXmlReader::<span class="name">setDeclHandler</span> ( <span class="type"><a href="qxmldeclhandler.html">QXmlDeclHandler</a></span> * <i>handler</i> )<tt> [pure virtual]</tt></h3>
<p>Sets the declaration handler to <i>handler</i>.</p>
<p><b>See also </b><a href="qxmlreader.html#declHandler">declHandler</a>().</p>
<!-- @@@setDeclHandler -->
<!-- $$$setEntityResolver[overload1]$$$setEntityResolverQXmlEntityResolver* -->
<h3 class="fn"><a name="setEntityResolver"></a><span class="type">void</span> QXmlReader::<span class="name">setEntityResolver</span> ( <span class="type"><a href="qxmlentityresolver.html">QXmlEntityResolver</a></span> * <i>handler</i> )<tt> [pure virtual]</tt></h3>
<p>Sets the entity resolver to <i>handler</i>.</p>
<p><b>See also </b><a href="qxmlreader.html#entityResolver">entityResolver</a>().</p>
<!-- @@@setEntityResolver -->
<!-- $$$setErrorHandler[overload1]$$$setErrorHandlerQXmlErrorHandler* -->
<h3 class="fn"><a name="setErrorHandler"></a><span class="type">void</span> QXmlReader::<span class="name">setErrorHandler</span> ( <span class="type"><a href="qxmlerrorhandler.html">QXmlErrorHandler</a></span> * <i>handler</i> )<tt> [pure virtual]</tt></h3>
<p>Sets the error handler to <i>handler</i>. Clears the error handler if <i>handler</i> is 0.</p>
<p><b>See also </b><a href="qxmlreader.html#errorHandler">errorHandler</a>().</p>
<!-- @@@setErrorHandler -->
<!-- $$$setFeature[overload1]$$$setFeatureconstQString&bool -->
<h3 class="fn"><a name="setFeature"></a><span class="type">void</span> QXmlReader::<span class="name">setFeature</span> ( const <span class="type"><a href="qstring.html">QString</a></span> & <i>name</i>, <span class="type">bool</span> <i>value</i> )<tt> [pure virtual]</tt></h3>
<p>Sets the feature called <i>name</i> to the given <i>value</i>. If the reader doesn't have the feature nothing happens.</p>
<p><b>See also </b><a href="qxmlreader.html#feature">feature</a>() and <a href="qxmlreader.html#hasFeature">hasFeature</a>().</p>
<!-- @@@setFeature -->
<!-- $$$setLexicalHandler[overload1]$$$setLexicalHandlerQXmlLexicalHandler* -->
<h3 class="fn"><a name="setLexicalHandler"></a><span class="type">void</span> QXmlReader::<span class="name">setLexicalHandler</span> ( <span class="type"><a href="qxmllexicalhandler.html">QXmlLexicalHandler</a></span> * <i>handler</i> )<tt> [pure virtual]</tt></h3>
<p>Sets the lexical handler to <i>handler</i>.</p>
<p><b>See also </b><a href="qxmlreader.html#lexicalHandler">lexicalHandler</a>().</p>
<!-- @@@setLexicalHandler -->
<!-- $$$setProperty[overload1]$$$setPropertyconstQString&void* -->
<h3 class="fn"><a name="setProperty"></a><span class="type">void</span> QXmlReader::<span class="name">setProperty</span> ( const <span class="type"><a href="qstring.html">QString</a></span> & <i>name</i>, <span class="type">void</span> * <i>value</i> )<tt> [pure virtual]</tt></h3>
<p>Sets the property <i>name</i> to <i>value</i>. If the reader doesn't have the property nothing happens.</p>
<p><b>See also </b><a href="qxmlreader.html#property">property</a>() and <a href="qxmlreader.html#hasProperty">hasProperty</a>().</p>
<!-- @@@setProperty -->
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