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202 lines
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202 lines
11 KiB
13 years ago
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
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5 months ago
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<!-- /home/espenr/tmp/qt-3.3.8-espenr-2499/qt-x11-free-3.3.8/src/xml/tqxml.cpp:377 -->
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13 years ago
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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>TQXmlNamespaceSupport Class</title>
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<tr bgcolor="#E5E5E5">
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<td valign=center>
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<a href="index.html">
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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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<font color="#004faf">Functions</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>TQXmlNamespaceSupport Class Reference<br><small>[<a href="xml.html">XML module</a>]</small></h1>
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<p>The TQXmlNamespaceSupport class is a helper class for XML
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readers which want to include namespace support.
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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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5 months ago
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<p><tt>#include <<a href="tqxml-h.html">tqxml.h</a>></tt>
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<p><a href="tqxmlnamespacesupport-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><a href="#TQXmlNamespaceSupport"><b>TQXmlNamespaceSupport</b></a> ()</li>
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<li class=fn><a href="#~TQXmlNamespaceSupport"><b>~TQXmlNamespaceSupport</b></a> ()</li>
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<li class=fn>void <a href="#setPrefix"><b>setPrefix</b></a> ( const TQString & pre, const TQString & uri )</li>
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<li class=fn>TQString <a href="#prefix"><b>prefix</b></a> ( const TQString & uri ) const</li>
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<li class=fn>TQString <a href="#uri"><b>uri</b></a> ( const TQString & prefix ) const</li>
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<li class=fn>void <a href="#splitName"><b>splitName</b></a> ( const TQString & qname, TQString & prefix, TQString & localname ) const</li>
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<li class=fn>void <a href="#processName"><b>processName</b></a> ( const TQString & qname, bool isAttribute, TQString & nsuri, TQString & localname ) const</li>
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<li class=fn>TQStringList <a href="#prefixes"><b>prefixes</b></a> () const</li>
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<li class=fn>TQStringList <a href="#prefixes-2"><b>prefixes</b></a> ( const TQString & uri ) const</li>
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<li class=fn>void <a href="#pushContext"><b>pushContext</b></a> ()</li>
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<li class=fn>void <a href="#popContext"><b>popContext</b></a> ()</li>
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<li class=fn>void <a href="#reset"><b>reset</b></a> ()</li>
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</ul>
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<hr><a name="details"></a><h2>Detailed Description</h2>
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The TQXmlNamespaceSupport class is a helper class for XML
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readers which want to include namespace support.
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<p>
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<p> You can set the prefix for the current namespace with <a href="#setPrefix">setPrefix</a>(),
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and get the list of current prefixes (or those for a given URI)
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with <a href="#prefixes">prefixes</a>(). The namespace URI is available from <a href="#uri">uri</a>(). Use
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<a href="#pushContext">pushContext</a>() to start a new namespace context, and <a href="#popContext">popContext</a>()
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to return to the previous namespace context. Use <a href="#splitName">splitName</a>() or
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<a href="#processName">processName</a>() to split a name into its prefix and local name.
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<p> See also the <a href="xml.html#sax2Namespaces">namespace description</a>.
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<p>See also <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 name="TQXmlNamespaceSupport"></a>TQXmlNamespaceSupport::TQXmlNamespaceSupport ()
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</h3>
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Constructs a TQXmlNamespaceSupport.
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<h3 class=fn><a name="~TQXmlNamespaceSupport"></a>TQXmlNamespaceSupport::~TQXmlNamespaceSupport ()
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</h3>
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Destroys a TQXmlNamespaceSupport.
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<h3 class=fn>void <a name="popContext"></a>TQXmlNamespaceSupport::popContext ()
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</h3>
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Reverts to the previous namespace context.
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<p> Normally, you should pop the context at the end of each XML
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element. After popping the context, all namespace prefix mappings
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that were previously in force are restored.
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<p> <p>See also <a href="#pushContext">pushContext</a>().
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<h3 class=fn><a href="ntqstring.html">TQString</a> <a name="prefix"></a>TQXmlNamespaceSupport::prefix ( const <a href="ntqstring.html">TQString</a> & uri ) const
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</h3>
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Returns one of the prefixes mapped to the namespace URI <em>uri</em>.
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<p> If more than one prefix is currently mapped to the same URI, this
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function makes an arbitrary selection; if you want all of the
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prefixes, use <a href="#prefixes">prefixes</a>() instead.
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<p> Note: to check for a default prefix, use the <a href="#uri">uri</a>() function with
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an argument of "".
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<h3 class=fn><a href="ntqstringlist.html">TQStringList</a> <a name="prefixes"></a>TQXmlNamespaceSupport::prefixes () const
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</h3>
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Returns a list of all the prefixes currently declared.
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<p> If there is a default prefix, this function does not return it in
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the list; check for the default prefix using <a href="#uri">uri</a>() with an
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argument of "".
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<p> Note that if you want to iterate over the list, you should iterate
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over a copy, e.g.
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<pre>
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<a href="ntqstringlist.html">TQStringList</a> list = myXmlNamespaceSupport.prefixes();
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TQStringList::iterator it = list.<a href="ntqvaluelist.html#begin">begin</a>();
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while ( it != list.<a href="ntqvaluelist.html#end">end</a>() ) {
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myProcessing( *it );
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++it;
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}
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</pre>
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<h3 class=fn><a href="ntqstringlist.html">TQStringList</a> <a name="prefixes-2"></a>TQXmlNamespaceSupport::prefixes ( const <a href="ntqstring.html">TQString</a> & uri ) const
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</h3>
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This is an overloaded member function, provided for convenience. It behaves essentially like the above function.
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<p> Returns a list of all prefixes currently declared for the
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namespace URI <em>uri</em>.
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<p> The "xml:" prefix is included. If you only want one prefix that is
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mapped to the namespace URI, and you don't care which one you get,
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use the <a href="#prefix">prefix</a>() function instead.
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<p> Note: the empty (default) prefix is never included in this list;
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to check for the presence of a default namespace, use <a href="#uri">uri</a>() with
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an argument of "".
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<p> Note that if you want to iterate over the list, you should iterate
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over a copy, e.g.
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<pre>
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<a href="ntqstringlist.html">TQStringList</a> list = myXmlNamespaceSupport.prefixes( "" );
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TQStringList::Iterator it = list.<a href="ntqvaluelist.html#begin">begin</a>();
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while( it != list.<a href="ntqvaluelist.html#end">end</a>() ) {
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myProcessing( *it );
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++it;
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}
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</pre>
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13 years ago
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<h3 class=fn>void <a name="processName"></a>TQXmlNamespaceSupport::processName ( const <a href="ntqstring.html">TQString</a> & qname, bool isAttribute, <a href="ntqstring.html">TQString</a> & nsuri, <a href="ntqstring.html">TQString</a> & localname ) const
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</h3>
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Processes a raw XML 1.0 name in the current context by removing
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the prefix and looking it up among the prefixes currently
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declared.
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<p> <em>qname</em> is the raw XML 1.0 name to be processed. <em>isAttribute</em>
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is TRUE if the name is an attribute name.
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<p> This function stores the namespace URI in <em>nsuri</em> (which will be
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set to <a href="ntqstring.html#TQString-null">TQString::null</a> if the raw name has an undeclared prefix),
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and stores the local name (without prefix) in <em>localname</em> (which
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will be set to TQString::null if no namespace is in use).
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<p> Note that attribute names are processed differently than element
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names: an unprefixed element name gets the default namespace (if
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any), while an unprefixed element name does not.
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<h3 class=fn>void <a name="pushContext"></a>TQXmlNamespaceSupport::pushContext ()
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</h3>
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Starts a new namespace context.
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<p> Normally, you should push a new context at the beginning of each
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XML element: the new context automatically inherits the
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declarations of its parent context, and it also keeps track of
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which declarations were made within this context.
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<p> <p>See also <a href="#popContext">popContext</a>().
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<h3 class=fn>void <a name="reset"></a>TQXmlNamespaceSupport::reset ()
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</h3>
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Resets this namespace support object ready for reuse.
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<h3 class=fn>void <a name="setPrefix"></a>TQXmlNamespaceSupport::setPrefix ( const <a href="ntqstring.html">TQString</a> & pre, const <a href="ntqstring.html">TQString</a> & uri )
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</h3>
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This function declares a prefix <em>pre</em> in the current namespace
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context to be the namespace URI <em>uri</em>. The prefix remains in
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force until this context is popped, unless it is shadowed in a
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descendant context.
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<p> Note that there is an asymmetry in this library. <a href="#prefix">prefix</a>() does not
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return the default "" prefix, even if you have declared one; to
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check for a default prefix, you must look it up explicitly using
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<a href="#uri">uri</a>(). This asymmetry exists to make it easier to look up prefixes
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for attribute names, where the default prefix is not allowed.
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<h3 class=fn>void <a name="splitName"></a>TQXmlNamespaceSupport::splitName ( const <a href="ntqstring.html">TQString</a> & qname, <a href="ntqstring.html">TQString</a> & prefix, <a href="ntqstring.html">TQString</a> & localname ) const
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</h3>
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Splits the name <em>qname</em> at the ':' and returns the prefix in <em>prefix</em> and the local name in <em>localname</em>.
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<p> <p>See also <a href="#processName">processName</a>().
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<h3 class=fn><a href="ntqstring.html">TQString</a> <a name="uri"></a>TQXmlNamespaceSupport::uri ( const <a href="ntqstring.html">TQString</a> & prefix ) const
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13 years ago
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</h3>
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Looks up the prefix <em>prefix</em> in the current context and returns
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the currently-mapped namespace URI. Use the empty string ("") for
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the default namespace.
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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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