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248 lines
14 KiB
248 lines
14 KiB
13 years ago
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
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<!-- /home/espenr/tmp/qt-3.3.8-espenr-2499/qt-x11-free-3.3.8/src/xml/tqxml.cpp:2348 -->
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<html>
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<head>
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<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
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<title>TQXmlReader Class</title>
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<style type="text/css"><!--
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<font color="#004faf">Home</font></a>
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<font color="#004faf">All Classes</font></a>
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</td>
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<td align="right" valign="center"><img src="logo32.png" align="right" width="64" height="32" border="0"></td></tr></table><h1 align=center>TQXmlReader Class Reference<br><small>[<a href="xml.html">XML module</a>]</small></h1>
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<p>The TQXmlReader class provides an interface for XML readers (i.e.
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parsers).
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<a href="#details">More...</a>
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<p>All the functions in this class are <a href="threads.html#reentrant">reentrant</a> when TQt is built with thread support.</p>
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<p><tt>#include <<a href="tqxml-h.html">tqxml.h</a>></tt>
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<p>Inherited by <a href="tqxmlsimplereader.html">TQXmlSimpleReader</a>.
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<p><a href="tqxmlreader-members.html">List of all member functions.</a>
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<h2>Public Members</h2>
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<ul>
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<li class=fn>virtual bool <a href="#feature"><b>feature</b></a> ( const TQString & name, bool * ok = 0 ) const = 0</li>
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<li class=fn>virtual void <a href="#setFeature"><b>setFeature</b></a> ( const TQString & name, bool value ) = 0</li>
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<li class=fn>virtual bool <a href="#hasFeature"><b>hasFeature</b></a> ( const TQString & name ) const = 0</li>
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<li class=fn>virtual void * <a href="#property"><b>property</b></a> ( const TQString & name, bool * ok = 0 ) const = 0</li>
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<li class=fn>virtual void <a href="#setProperty"><b>setProperty</b></a> ( const TQString & name, void * value ) = 0</li>
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<li class=fn>virtual bool <a href="#hasProperty"><b>hasProperty</b></a> ( const TQString & name ) const = 0</li>
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<li class=fn>virtual void <a href="#setEntityResolver"><b>setEntityResolver</b></a> ( TQXmlEntityResolver * handler ) = 0</li>
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<li class=fn>virtual TQXmlEntityResolver * <a href="#entityResolver"><b>entityResolver</b></a> () const = 0</li>
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<li class=fn>virtual void <a href="#setDTDHandler"><b>setDTDHandler</b></a> ( TQXmlDTDHandler * handler ) = 0</li>
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<li class=fn>virtual TQXmlDTDHandler * <a href="#DTDHandler"><b>DTDHandler</b></a> () const = 0</li>
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<li class=fn>virtual void <a href="#setContentHandler"><b>setContentHandler</b></a> ( TQXmlContentHandler * handler ) = 0</li>
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<li class=fn>virtual TQXmlContentHandler * <a href="#contentHandler"><b>contentHandler</b></a> () const = 0</li>
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<li class=fn>virtual void <a href="#setErrorHandler"><b>setErrorHandler</b></a> ( TQXmlErrorHandler * handler ) = 0</li>
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<li class=fn>virtual TQXmlErrorHandler * <a href="#errorHandler"><b>errorHandler</b></a> () const = 0</li>
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<li class=fn>virtual void <a href="#setLexicalHandler"><b>setLexicalHandler</b></a> ( TQXmlLexicalHandler * handler ) = 0</li>
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<li class=fn>virtual TQXmlLexicalHandler * <a href="#lexicalHandler"><b>lexicalHandler</b></a> () const = 0</li>
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<li class=fn>virtual void <a href="#setDeclHandler"><b>setDeclHandler</b></a> ( TQXmlDeclHandler * handler ) = 0</li>
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<li class=fn>virtual TQXmlDeclHandler * <a href="#declHandler"><b>declHandler</b></a> () const = 0</li>
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<li class=fn>virtual bool parse ( const TQXmlInputSource & input ) = 0 <em>(obsolete)</em></li>
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<li class=fn>virtual bool <a href="#parse"><b>parse</b></a> ( const TQXmlInputSource * input ) = 0</li>
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</ul>
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<hr><a name="details"></a><h2>Detailed Description</h2>
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The TQXmlReader class provides an interface for XML readers (i.e.
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parsers).
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<p>
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<p> This abstract class provides an interface for all of TQt's XML
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readers. Currently there is only one implementation of a reader
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included in TQt's XML module: <a href="tqxmlsimplereader.html">TQXmlSimpleReader</a>. In future releases
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there might be more readers with different properties available
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(e.g. a validating parser).
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<p> The design of the XML classes follows the <a href="http://www.saxproject.org/">SAX2 Java interface</a>, with
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the names adapted to fit TQt naming conventions. It should be very
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easy for anybody who has worked with SAX2 to get started with the
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TQt XML classes.
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<p> All readers use the class <a href="tqxmlinputsource.html">TQXmlInputSource</a> to read the input
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document. Since you are normally interested in particular content
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in the XML document, the reader reports the content through
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special handler classes (<a href="tqxmldtdhandler.html">TQXmlDTDHandler</a>, <a href="tqxmldeclhandler.html">TQXmlDeclHandler</a>,
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<a href="tqxmlcontenthandler.html">TQXmlContentHandler</a>, <a href="tqxmlentityresolver.html">TQXmlEntityResolver</a>, <a href="tqxmlerrorhandler.html">TQXmlErrorHandler</a> and
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<a href="tqxmllexicalhandler.html">TQXmlLexicalHandler</a>), which you must subclass, if you want to
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process the contents.
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<p> Since the handler classes only describe interfaces you must
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implement all the functions. We provide the <a href="tqxmldefaulthandler.html">TQXmlDefaultHandler</a>
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class to make this easier: it implements a default behaviour (do
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nothing) for all functions, so you can subclass it and just
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implement the functions you are interested in.
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<p> Features and properties of the reader can be set with <a href="#setFeature">setFeature</a>()
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and <a href="#setProperty">setProperty</a>() respectively. You can set the reader to use your
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own subclasses with <a href="#setEntityResolver">setEntityResolver</a>(), <a href="#setDTDHandler">setDTDHandler</a>(),
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<a href="#setContentHandler">setContentHandler</a>(), <a href="#setErrorHandler">setErrorHandler</a>(), <a href="#setLexicalHandler">setLexicalHandler</a>() and
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<a href="#setDeclHandler">setDeclHandler</a>(). The parse itself is started with a call to
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<a href="#parse">parse</a>().
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<p> <p>See also <a href="tqxmlsimplereader.html">TQXmlSimpleReader</a> and <a href="xml-tools.html">XML</a>.
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<hr><h2>Member Function Documentation</h2>
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<h3 class=fn><a href="tqxmldtdhandler.html">TQXmlDTDHandler</a> * <a name="DTDHandler"></a>TQXmlReader::DTDHandler () const<tt> [pure virtual]</tt>
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</h3>
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<p> Returns the DTD handler or 0 if none was set.
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<p> <p>See also <a href="#setDTDHandler">setDTDHandler</a>().
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<h3 class=fn><a href="tqxmlcontenthandler.html">TQXmlContentHandler</a> * <a name="contentHandler"></a>TQXmlReader::contentHandler () const<tt> [pure virtual]</tt>
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</h3>
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<p> Returns the content handler or 0 if none was set.
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<p> <p>See also <a href="#setContentHandler">setContentHandler</a>().
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<h3 class=fn><a href="tqxmldeclhandler.html">TQXmlDeclHandler</a> * <a name="declHandler"></a>TQXmlReader::declHandler () const<tt> [pure virtual]</tt>
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</h3>
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<p> Returns the declaration handler or 0 if none was set.
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<p> <p>See also <a href="#setDeclHandler">setDeclHandler</a>().
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<h3 class=fn><a href="tqxmlentityresolver.html">TQXmlEntityResolver</a> * <a name="entityResolver"></a>TQXmlReader::entityResolver () const<tt> [pure virtual]</tt>
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</h3>
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<p> Returns the entity resolver or 0 if none was set.
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<p> <p>See also <a href="#setEntityResolver">setEntityResolver</a>().
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<h3 class=fn><a href="tqxmlerrorhandler.html">TQXmlErrorHandler</a> * <a name="errorHandler"></a>TQXmlReader::errorHandler () const<tt> [pure virtual]</tt>
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13 years ago
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</h3>
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<p> Returns the error handler or 0 if none is set.
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<p> <p>See also <a href="#setErrorHandler">setErrorHandler</a>().
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<h3 class=fn>bool <a name="feature"></a>TQXmlReader::feature ( const <a href="ntqstring.html">TQString</a> & name, bool * ok = 0 ) const<tt> [pure virtual]</tt>
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</h3>
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<p> If the reader has the feature called <em>name</em>, the feature's value
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is returned. If no such feature exists the return value is
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undefined.
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<p> If <em>ok</em> is not 0: <em>*ok</em> is set to TRUE if the reader has the
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feature called <em>name</em>; otherwise <em>*ok</em> is set to FALSE.
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<p> <p>See also <a href="#setFeature">setFeature</a>() and <a href="#hasFeature">hasFeature</a>().
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<h3 class=fn>bool <a name="hasFeature"></a>TQXmlReader::hasFeature ( const <a href="ntqstring.html">TQString</a> & name ) const<tt> [pure virtual]</tt>
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</h3>
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<p> Returns <tt>TRUE</tt> if the reader has the feature called <em>name</em>;
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otherwise returns FALSE.
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<p> <p>See also <a href="#feature">feature</a>() and <a href="#setFeature">setFeature</a>().
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<h3 class=fn>bool <a name="hasProperty"></a>TQXmlReader::hasProperty ( const <a href="ntqstring.html">TQString</a> & name ) const<tt> [pure virtual]</tt>
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</h3>
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<p> Returns TRUE if the reader has the property <em>name</em>; otherwise
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returns FALSE.
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<p> <p>See also <a href="#property">property</a>() and <a href="#setProperty">setProperty</a>().
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<h3 class=fn><a href="tqxmllexicalhandler.html">TQXmlLexicalHandler</a> * <a name="lexicalHandler"></a>TQXmlReader::lexicalHandler () const<tt> [pure virtual]</tt>
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</h3>
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<p> Returns the lexical handler or 0 if none was set.
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<p> <p>See also <a href="#setLexicalHandler">setLexicalHandler</a>().
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<h3 class=fn>bool <a name="parse"></a>TQXmlReader::parse ( const <a href="tqxmlinputsource.html">TQXmlInputSource</a> * input )<tt> [pure virtual]</tt>
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</h3>
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<p> Reads an XML document from <em>input</em> and parses it. Returns TRUE if
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the parsing was successful; otherwise returns FALSE.
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<p>Example: <a href="xml-sax-walkthrough.html#x2139">xml/tagreader/tagreader.cpp</a>.
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<h3 class=fn>bool <a name="parse-2"></a>TQXmlReader::parse ( const <a href="tqxmlinputsource.html">TQXmlInputSource</a> & input )<tt> [pure virtual]</tt>
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</h3>
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<p> <b>This function is obsolete.</b> It is provided to keep old source working. We strongly advise against using it in new code.
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<p>
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<h3 class=fn>void * <a name="property"></a>TQXmlReader::property ( const <a href="ntqstring.html">TQString</a> & name, bool * ok = 0 ) const<tt> [pure virtual]</tt>
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</h3>
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<p> If the reader has the property <em>name</em>, this function returns the
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value of the property; otherwise the return value is undefined.
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<p> If <em>ok</em> is not 0: if the reader has the <em>name</em> property <em>*ok</em>
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is set to TRUE; otherwise <em>*ok</em> is set to FALSE.
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<p> <p>See also <a href="#setProperty">setProperty</a>() and <a href="#hasProperty">hasProperty</a>().
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<h3 class=fn>void <a name="setContentHandler"></a>TQXmlReader::setContentHandler ( <a href="tqxmlcontenthandler.html">TQXmlContentHandler</a> * handler )<tt> [pure virtual]</tt>
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</h3>
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<p> Sets the content handler to <em>handler</em>.
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<p> <p>See also <a href="#contentHandler">contentHandler</a>().
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<p>Example: <a href="xml-sax-walkthrough.html#x2140">xml/tagreader/tagreader.cpp</a>.
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<h3 class=fn>void <a name="setDTDHandler"></a>TQXmlReader::setDTDHandler ( <a href="tqxmldtdhandler.html">TQXmlDTDHandler</a> * handler )<tt> [pure virtual]</tt>
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</h3>
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<p> Sets the DTD handler to <em>handler</em>.
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<p> <p>See also <a href="#DTDHandler">DTDHandler</a>().
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<h3 class=fn>void <a name="setDeclHandler"></a>TQXmlReader::setDeclHandler ( <a href="tqxmldeclhandler.html">TQXmlDeclHandler</a> * handler )<tt> [pure virtual]</tt>
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</h3>
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<p> Sets the declaration handler to <em>handler</em>.
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<p> <p>See also <a href="#declHandler">declHandler</a>().
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<h3 class=fn>void <a name="setEntityResolver"></a>TQXmlReader::setEntityResolver ( <a href="tqxmlentityresolver.html">TQXmlEntityResolver</a> * handler )<tt> [pure virtual]</tt>
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</h3>
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<p> Sets the entity resolver to <em>handler</em>.
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<p> <p>See also <a href="#entityResolver">entityResolver</a>().
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<h3 class=fn>void <a name="setErrorHandler"></a>TQXmlReader::setErrorHandler ( <a href="tqxmlerrorhandler.html">TQXmlErrorHandler</a> * handler )<tt> [pure virtual]</tt>
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</h3>
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<p> Sets the error handler to <em>handler</em>. Clears the error handler if
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<em>handler</em> is 0.
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<p> <p>See also <a href="#errorHandler">errorHandler</a>().
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<h3 class=fn>void <a name="setFeature"></a>TQXmlReader::setFeature ( const <a href="ntqstring.html">TQString</a> & name, bool value )<tt> [pure virtual]</tt>
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</h3>
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<p> Sets the feature called <em>name</em> to the given <em>value</em>. If the
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reader doesn't have the feature nothing happens.
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<p> <p>See also <a href="#feature">feature</a>() and <a href="#hasFeature">hasFeature</a>().
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<p>Reimplemented in <a href="tqxmlsimplereader.html#setFeature">TQXmlSimpleReader</a>.
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<h3 class=fn>void <a name="setLexicalHandler"></a>TQXmlReader::setLexicalHandler ( <a href="tqxmllexicalhandler.html">TQXmlLexicalHandler</a> * handler )<tt> [pure virtual]</tt>
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</h3>
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<p> Sets the lexical handler to <em>handler</em>.
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<p> <p>See also <a href="#lexicalHandler">lexicalHandler</a>().
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<h3 class=fn>void <a name="setProperty"></a>TQXmlReader::setProperty ( const <a href="ntqstring.html">TQString</a> & name, void * value )<tt> [pure virtual]</tt>
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</h3>
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<p> Sets the property <em>name</em> to <em>value</em>. If the reader doesn't have
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the property nothing happens.
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<p> <p>See also <a href="#property">property</a>() and <a href="#hasProperty">hasProperty</a>().
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<!-- eof -->
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<hr><p>
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This file is part of the <a href="index.html">TQt toolkit</a>.
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Copyright © 1995-2007
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<a href="http://www.trolltech.com/">Trolltech</a>. All Rights Reserved.<p><address><hr><div align=center>
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<table width=100% cellspacing=0 border=0><tr>
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<td>Copyright © 2007
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<a href="troll.html">Trolltech</a><td align=center><a href="trademarks.html">Trademarks</a>
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<td align=right><div align=right>TQt 3.3.8</div>
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</table></div></address></body>
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</html>
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