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<td align="right" valign="top" width="230"><img src="images/trolltech-logo.png" align="right" width="203" height="32" border="0" /></td></tr></table><h1 align="center">QDomImplementation Class Reference</h1>

<p>The QDomImplementation class provides information about the features of the DOM implementation. <a href="#details">More...</a></p>

<pre>#include <QDomImplementation></pre><p>Part of the <a href="qtxml.html">QtXml</a> module.</p>

<p><b>Note:</b> All the functions in this class are <a href="threads.html#reentrant">reentrant</a>.</p>

<ul>

<li><a href="qdomimplementation-members.html">List of all members, including inherited members</a></li>

</ul>

<h3>Public Functions</h3>

<ul>

<li><div class="fn"/><b><a href="qdomimplementation.html#QDomImplementation">QDomImplementation</a></b> ()</li>

<li><div class="fn"/><b><a href="qdomimplementation.html#QDomImplementation-2">QDomImplementation</a></b> ( const QDomImplementation & <i>x</i> )</li>

<li><div class="fn"/><b><a href="qdomimplementation.html#dtor.QDomImplementation">~QDomImplementation</a></b> ()</li>

<li><div class="fn"/>QDomDocument <b><a href="qdomimplementation.html#createDocument">createDocument</a></b> ( const QString & <i>nsURI</i>, const QString & <i>qName</i>, const QDomDocumentType & <i>doctype</i> )</li>

<li><div class="fn"/>QDomDocumentType <b><a href="qdomimplementation.html#createDocumentType">createDocumentType</a></b> ( const QString & <i>qName</i>, const QString & <i>publicId</i>, const QString & <i>systemId</i> )</li>

<li><div class="fn"/>bool <b><a href="qdomimplementation.html#hasFeature">hasFeature</a></b> ( const QString & <i>feature</i>, const QString & <i>version</i> ) const</li>

<li><div class="fn"/>bool <b><a href="qdomimplementation.html#isNull">isNull</a></b> ()</li>

<li><div class="fn"/>bool <b><a href="qdomimplementation.html#operator-not-eq">operator!=</a></b> ( const QDomImplementation & <i>x</i> ) const</li>

<li><div class="fn"/>QDomImplementation & <b><a href="qdomimplementation.html#operator-eq">operator=</a></b> ( const QDomImplementation & <i>x</i> )</li>

<li><div class="fn"/>bool <b><a href="qdomimplementation.html#operator-eq-eq">operator==</a></b> ( const QDomImplementation & <i>x</i> ) const</li>

</ul>

<hr />

<h2>Detailed Description</h2>

<p>The QDomImplementation class provides information about the features of the DOM implementation.</p>

<p>This class describes the features that are supported by the DOM implementation. Currently the XML subset of DOM Level 1 and DOM Level 2 Core are supported.</p>

<p>Normally you will use the function <a href="qdomdocument.html#implementation">QDomDocument::implementation</a>() to get the implementation object.</p>

<p>You can create a new document type with <a href="qdomimplementation.html#createDocumentType">createDocumentType</a>() and a new document with <a href="qdomimplementation.html#createDocument">createDocument</a>().</p>

<p>For further information about the Document Object Model see <a href="http://www.w3.org/TR/REC-DOM-Level-1/">Level 1</a> and <a href="http://www.w3.org/TR/DOM-Level-2-Core/">Level 2 Core</a>. For a more general introduction of the DOM implementation see the <a href="qdomdocument.html">QDomDocument</a> documentation.</p>

<p>See also <a href="qdomimplementation.html#hasFeature">hasFeature</a>().</p>

<hr />

<h2>Member Function Documentation</h2>

<h3 class="fn"><a name="QDomImplementation"></a>QDomImplementation::QDomImplementation ()</h3>

<p>Constructs a <a href="qdomimplementation.html">QDomImplementation</a> object.</p>

<h3 class="fn"><a name="QDomImplementation-2"></a>QDomImplementation::QDomImplementation ( const QDomImplementation & <i>x</i> )</h3>

<p>Constructs a copy of <i>x</i>.</p>

<h3 class="fn"><a name="dtor.QDomImplementation"></a>QDomImplementation::~QDomImplementation ()</h3>

<p>Destroys the object and frees its resources.</p>

<h3 class="fn"><a name="createDocument"></a><a href="qdomdocument.html">QDomDocument</a> QDomImplementation::createDocument ( const <a href="qstring.html">QString</a> & <i>nsURI</i>, const <a href="qstring.html">QString</a> & <i>qName</i>, const <a href="qdomdocumenttype.html">QDomDocumentType</a> & <i>doctype</i> )</h3>

<p>Creates a DOM document with the document type <i>doctype</i>. This function also adds a root element node with the qualified name <i>qName</i> and the namespace URI <i>nsURI</i>.</p>

<h3 class="fn"><a name="createDocumentType"></a><a href="qdomdocumenttype.html">QDomDocumentType</a> QDomImplementation::createDocumentType ( const <a href="qstring.html">QString</a> & <i>qName</i>, const <a href="qstring.html">QString</a> & <i>publicId</i>, const <a href="qstring.html">QString</a> & <i>systemId</i> )</h3>

<p>Creates a document type node for the name <i>qName</i>.</p>

<p><i>publicId</i> specifies the public identifier of the external subset. If you specify an empty string (QString()) as the <i>publicId</i>, this means that the document type has no public identifier.</p>

<p><i>systemId</i> specifies the system identifier of the external subset. If you specify an empty string as the <i>systemId</i>, this means that the document type has no system identifier.</p>

<p>Since you cannot have a public identifier without a system identifier, the public identifier is set to an empty string if there is no system identifier.</p>

<p>DOM level 2 does not support any other document type declaration features.</p>

<p>The only way you can use a document type that was created this way, is in combination with the <a href="qdomimplementation.html#createDocument">createDocument</a>() function to create a <a href="qdomdocument.html">QDomDocument</a> with this document type.</p>

<p>See also <a href="qdomimplementation.html#createDocument">createDocument</a>().</p>

<h3 class="fn"><a name="hasFeature"></a>bool QDomImplementation::hasFeature ( const <a href="qstring.html">QString</a> & <i>feature</i>, const <a href="qstring.html">QString</a> & <i>version</i> ) const</h3>

<p>The function returns true if QDom implements the requested <i>version</i> of a <i>feature</i>; otherwise returns false.</p>

<p>The currently supported features and their versions:</p>

<tr valign="top" bgcolor="#a2c511"><th>Feature</th><th>Version</th></tr>

</table>

<h3 class="fn"><a name="isNull"></a>bool QDomImplementation::isNull ()</h3>

<p>Returns false if the object was created by <a href="qdomdocument.html#implementation">QDomDocument::implementation</a>(); otherwise returns true.</p>

<h3 class="fn"><a name="operator-not-eq"></a>bool QDomImplementation::operator!= ( const QDomImplementation & <i>x</i> ) const</h3>

<p>Returns true if <i>x</i> and this DOM implementation object were created from different QDomDocuments; otherwise returns false.</p>

<h3 class="fn"><a name="operator-eq"></a>QDomImplementation & QDomImplementation::operator= ( const QDomImplementation & <i>x</i> )</h3>

<p>Assigns <i>x</i> to this DOM implementation.</p>

<h3 class="fn"><a name="operator-eq-eq"></a>bool QDomImplementation::operator== ( const QDomImplementation & <i>x</i> ) const</h3>

<p>Returns true if <i>x</i> and this DOM implementation object were created from the same <a href="qdomdocument.html">QDomDocument</a>; otherwise returns false.</p>

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