?? tagreader-with-features-example.html
字號:
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"><!-- /home/reggie/tmp/qt-3.0-reggie-5401/qt-x11-commercial-3.0.5/examples/xml/tagreader-with-features/tagreader.doc:5 --><html><head><meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"><title>Demonstration of SAX2 features</title><style type="text/css"><!--h3.fn,span.fn { margin-left: 1cm; text-indent: -1cm; }a:link { color: #004faf; text-decoration: none }a:visited { color: #672967; text-decoration: none }body { background: #ffffff; color: black; }--></style></head><body><table border="0" cellpadding="0" cellspacing="0" width="100%"><tr bgcolor="#E5E5E5"><td valign=center> <a href="index.html"><font color="#004faf">Home</font></a> | <a href="classes.html"><font color="#004faf">All Classes</font></a> | <a href="mainclasses.html"><font color="#004faf">Main Classes</font></a> | <a href="annotated.html"><font color="#004faf">Annotated</font></a> | <a href="groups.html"><font color="#004faf">Grouped Classes</font></a> | <a href="functions.html"><font color="#004faf">Functions</font></a></td><td align="right" valign="center"><img src="logo32.png" align="right" width="64" height="32" border="0"></td></tr></table><h1 align=center>Demonstration of SAX2 features</h1> <p> <p> This example presents a small <a href="xml.html#sax2">SAX2</a>reader that outputs the qualified names and therespective namespace URIs of all elements and attributes in anXML file. Additionally the tree structure of the document is displayed.<p> In three listviews the program shows the different output of the readerdepending on how the SAX2 <a href="xml.html#sax2Namespaces">features</a><em>http://xml.org/sax/features/namespaces</em> and<em>http://xml.org/sax/features/namespace-prefixes</em> are set.<p> This example is thoroughly explained in a <a href="xml-sax-features-walkthrough.html">walkthrough.</a><p> <hr><p> Header file:<p> <pre>/*$Id$*/#ifndef STRUCTUREPARSER_H#define STRUCTUREPARSER_H#include <<a href="qxml-h.html">qxml.h</a>>#include <<a href="qptrstack-h.html">qptrstack.h</a>>class QListView;class QListViewItem;class QString;class StructureParser: public <a href="qxmldefaulthandler.html">QXmlDefaultHandler</a>{public: StructureParser( <a href="qlistview.html">QListView</a> * ); bool startElement( const <a href="qstring.html">QString</a>&, const <a href="qstring.html">QString</a>&, const <a href="qstring.html">QString</a>& , const <a href="qxmlattributes.html">QXmlAttributes</a>& ); bool endElement( const <a href="qstring.html">QString</a>&, const <a href="qstring.html">QString</a>&, const <a href="qstring.html">QString</a>& ); void setListView( <a href="qlistview.html">QListView</a> * );private: <a href="qptrstack.html">QPtrStack</a><QListViewItem> stack; <a href="qlistview.html">QListView</a> * table;};#endif</pre><p> <hr><p> Implementation:<p> <pre>/*$Id$*/#include "structureparser.h"#include <<a href="qstring-h.html">qstring.h</a>>#include <<a href="qlistview-h.html">qlistview.h</a>><a name="f527"></a>StructureParser::StructureParser( <a href="qlistview.html">QListView</a> * t ) : <a href="qxmldefaulthandler.html">QXmlDefaultHandler</a>(){ setListView( t );}void <a name="f528"></a>StructureParser::setListView( <a href="qlistview.html">QListView</a> * t ){ table = t; table->setSorting( -1 ); table->addColumn( "Qualified name" ); table->addColumn( "Namespace" );}<a name="x1957"></a>bool StructureParser::<a href="qxmlcontenthandler.html#startElement">startElement</a>( const <a href="qstring.html">QString</a>& namespaceURI, const <a href="qstring.html">QString</a>& , const <a href="qstring.html">QString</a>& qName, const <a href="qxmlattributes.html">QXmlAttributes</a>& attributes){ <a href="qlistviewitem.html">QListViewItem</a> * element; if ( ! stack.isEmpty() ){ <a href="qlistviewitem.html">QListViewItem</a> *lastChild = stack.top()->firstChild(); if ( lastChild ) {<a name="x1951"></a> while ( lastChild-><a href="qlistviewitem.html#nextSibling">nextSibling</a>() ) lastChild = lastChild-><a href="qlistviewitem.html#nextSibling">nextSibling</a>(); } element = new <a href="qlistviewitem.html">QListViewItem</a>( stack.top(), lastChild, qName, namespaceURI ); } else { element = new <a href="qlistviewitem.html">QListViewItem</a>( table, qName, namespaceURI ); } stack.push( element );<a name="x1952"></a> element-><a href="qlistviewitem.html#setOpen">setOpen</a>( TRUE );<a name="x1953"></a> if ( attributes.<a href="qxmlattributes.html#length">length</a>() > 0 ) { for ( int i = 0 ; i < attributes.<a href="qxmlattributes.html#length">length</a>(); i++ ) {<a name="x1955"></a><a name="x1954"></a> new <a href="qlistviewitem.html">QListViewItem</a>( element, attributes.<a href="qxmlattributes.html#qName">qName</a>(i), attributes.<a href="qxmlattributes.html#uri">uri</a>(i) ); } } return TRUE;}<a name="x1956"></a>bool StructureParser::<a href="qxmlcontenthandler.html#endElement">endElement</a>( const <a href="qstring.html">QString</a>&, const <a href="qstring.html">QString</a>&, const <a href="qstring.html">QString</a>& ){ stack.pop(); return TRUE;}</pre><p> <hr><p> Main:<p> <pre>/****************************************************************************** $Id: qt/tagreader.cpp 3.0.5 edited May 24 18:49 $**** Copyright (C) 2001 Trolltech AS. All rights reserved.**** This file is part of an example program for Qt. This example** program may be used, distributed and modified without limitation.*******************************************************************************/#include "structureparser.h"#include <<a href="qapplication-h.html">qapplication.h</a>>#include <<a href="qfile-h.html">qfile.h</a>>#include <<a href="qxml-h.html">qxml.h</a>>#include <<a href="qlistview-h.html">qlistview.h</a>>#include <<a href="qgrid-h.html">qgrid.h</a>>#include <<a href="qmainwindow-h.html">qmainwindow.h</a>>#include <<a href="qlabel-h.html">qlabel.h</a>>int main( int argc, char **argv ){ <a href="qapplication.html">QApplication</a> app( argc, argv ); <a href="qfile.html">QFile</a> xmlFile( argc == 2 ? argv[1] : "fnord.xml" ); <a href="qxmlinputsource.html">QXmlInputSource</a> source( &xmlFile ); <a href="qxmlsimplereader.html">QXmlSimpleReader</a> reader; <a href="qgrid.html">QGrid</a> * container = new <a href="qgrid.html">QGrid</a>( 3 ); <a href="qlistview.html">QListView</a> * nameSpace = new <a href="qlistview.html">QListView</a>( container, "table_namespace" ); StructureParser * handler = new StructureParser( nameSpace );<a name="x1963"></a> reader.<a href="qxmlreader.html#setContentHandler">setContentHandler</a>( handler );<a name="x1962"></a> reader.<a href="qxmlsimplereader.html#parse">parse</a>( source ); <a href="qlistview.html">QListView</a> * namespacePrefix = new <a href="qlistview.html">QListView</a>( container, "table_namespace_prefix" ); handler->setListView( namespacePrefix );<a name="x1964"></a> reader.<a href="qxmlreader.html#setFeature">setFeature</a>( "http://xml.org/sax/features/namespace-prefixes", TRUE );<a name="x1961"></a> source.<a href="qxmlinputsource.html#reset">reset</a>(); reader.<a href="qxmlsimplereader.html#parse">parse</a>( source ); <a href="qlistview.html">QListView</a> * prefix = new <a href="qlistview.html">QListView</a>( container, "table_prefix"); handler->setListView( prefix ); reader.<a href="qxmlreader.html#setFeature">setFeature</a>( "http://xml.org/sax/features/namespaces", FALSE ); source.<a href="qxmlinputsource.html#reset">reset</a>(); reader.<a href="qxmlsimplereader.html#parse">parse</a>( source ); // namespace label (void) new <a href="qlabel.html">QLabel</a>( "Default:\n" "http://xml.org/sax/features/namespaces: TRUE\n" "http://xml.org/sax/features/namespace-prefixes: FALSE\n", container ); // namespace prefix label (void) new <a href="qlabel.html">QLabel</a>( "\n" "http://xml.org/sax/features/namespaces: TRUE\n" "http://xml.org/sax/features/namespace-prefixes: TRUE\n", container ); // prefix label (void) new <a href="qlabel.html">QLabel</a>( "\n" "http://xml.org/sax/features/namespaces: FALSE\n" "http://xml.org/sax/features/namespace-prefixes: TRUE\n", container ); app.<a href="qapplication.html#setMainWidget">setMainWidget</a>( container ); container-><a href="qwidget.html#show">show</a>(); return app.<a href="qapplication.html#exec">exec</a>();}</pre><p>See also <a href="xml-examples.html">Qt XML Examples</a>.<!-- eof --><p><address><hr><div align=center><table width=100% cellspacing=0 border=0><tr><td>Copyright © 2002 <a href="http://www.trolltech.com">Trolltech</a><td><a href="http://www.trolltech.com/trademarks.html">Trademarks</a><td align=right><div align=right>Qt version 3.0.5</div></table></div></address></body></html>?? 快捷鍵說明
復制代碼
Ctrl + C
搜索代碼
Ctrl + F
全屏模式
F11
切換主題
Ctrl + Shift + D
顯示快捷鍵
?
增大字號
Ctrl + =
減小字號
Ctrl + -