qxmlcontenthandler.html

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<p>Example: <a href="xml-sax-walkthrough.html#x2136">xml/tagreader/structureparser.cpp</a>.
<h3 class=fn>bool <a name="endPrefixMapping"></a>QXmlContentHandler::endPrefixMapping ( const&nbsp;<a href="qstring.html">QString</a>&nbsp;&amp;&nbsp;prefix )<tt> [pure virtual]</tt>
</h3>

<p> The reader calls this function to signal the end of a prefix mapping for the
prefix <em>prefix</em>.
<p> If this function returns FALSE the reader stops parsing and reports
an error. The reader uses the function <a href="#errorString">errorString</a>() to get the error
message.
<p> See also the <a href="xml.html#sax2Namespaces">namespace description</a>.
<p> <p>See also <a href="#startPrefixMapping">startPrefixMapping</a>().

<h3 class=fn><a href="qstring.html">QString</a> <a name="errorString"></a>QXmlContentHandler::errorString ()<tt> [pure virtual]</tt>
</h3>

<p> The reader calls this function to get an error string, e.g. if any
of the handler functions returns FALSE.

<h3 class=fn>bool <a name="ignorableWhitespace"></a>QXmlContentHandler::ignorableWhitespace ( const&nbsp;<a href="qstring.html">QString</a>&nbsp;&amp;&nbsp;ch )<tt> [pure virtual]</tt>
</h3>

<p> Some readers may use this function to report each chunk of whitespace in
element content. The whitespace reported in <em>ch</em>.
<p> If this function returns FALSE the reader stops parsing and reports
an error. The reader uses the function <a href="#errorString">errorString</a>() to get the error
message.

<h3 class=fn>bool <a name="processingInstruction"></a>QXmlContentHandler::processingInstruction ( const&nbsp;<a href="qstring.html">QString</a>&nbsp;&amp;&nbsp;target, const&nbsp;<a href="qstring.html">QString</a>&nbsp;&amp;&nbsp;data )<tt> [pure virtual]</tt>
</h3>

<p> The reader calls this function when it has parsed a processing
instruction.
<p> <em>target</em> is the target name of the processing instruction and <em>data</em> is the
data in the processing instruction.
<p> If this function returns FALSE the reader stops parsing and reports
an error. The reader uses the function <a href="#errorString">errorString</a>() to get the error
message.

<h3 class=fn>void <a name="setDocumentLocator"></a>QXmlContentHandler::setDocumentLocator ( <a href="qxmllocator.html">QXmlLocator</a>&nbsp;*&nbsp;locator )<tt> [pure virtual]</tt>
</h3>

<p> The reader calls this function before it starts parsing the document. The
argument <em>locator</em> is a pointer to a <a href="qxmllocator.html">QXmlLocator</a> which allows the
application to get the parsing position within the document.
<p> Do not destroy the <em>locator</em>; it is destroyed when the reader is destroyed
(do not use the <em>locator</em> after the reader is destroyed).

<h3 class=fn>bool <a name="skippedEntity"></a>QXmlContentHandler::skippedEntity ( const&nbsp;<a href="qstring.html">QString</a>&nbsp;&amp;&nbsp;name )<tt> [pure virtual]</tt>
</h3>

<p> Some readers may skip entities if they have not seen the declarations (e.g.
because they are in an external DTD). If they do so they report that they
skipped the entity called <em>name</em> by calling this function.
<p> If this function returns FALSE the reader stops parsing and reports
an error. The reader uses the function <a href="#errorString">errorString</a>() to get the error
message.

<h3 class=fn>bool <a name="startDocument"></a>QXmlContentHandler::startDocument ()<tt> [pure virtual]</tt>
</h3>

<p> The reader calls this function when it starts parsing the document.
The reader calls this function just once, after the call to
<a href="#setDocumentLocator">setDocumentLocator</a>(), and before any other functions in
this class or in the <a href="qxmldtdhandler.html">QXmlDTDHandler</a> class are called.
<p> If this function returns FALSE the reader stops parsing and reports
an error. The reader uses the function <a href="#errorString">errorString</a>() to get the error
message.
<p> <p>See also <a href="#endDocument">endDocument</a>().

<p>Example: <a href="xml-sax-walkthrough.html#x2137">xml/tagreader/structureparser.cpp</a>.
<h3 class=fn>bool <a name="startElement"></a>QXmlContentHandler::startElement ( const&nbsp;<a href="qstring.html">QString</a>&nbsp;&amp;&nbsp;namespaceURI, const&nbsp;<a href="qstring.html">QString</a>&nbsp;&amp;&nbsp;localName, const&nbsp;<a href="qstring.html">QString</a>&nbsp;&amp;&nbsp;qName, const&nbsp;<a href="qxmlattributes.html">QXmlAttributes</a>&nbsp;&amp;&nbsp;atts )<tt> [pure virtual]</tt>
</h3>

<p> The reader calls this function when it has parsed a start element tag.
<p> There is a corresponding <a href="#endElement">endElement</a>() call when the corresponding end
element tag is read. The <a href="#startElement">startElement</a>() and endElement() calls are always
nested correctly. Empty element tags (e.g. <tt>&lt;x/&gt;</tt>) cause a
startElement() call immediately followed by an endElement() call.
<p> The attribute list provided contains only attributes with explicit
values. The attribute list contains attributes used for namespace
declaration (i.e. attributes starting with xmlns) only if the
namespace-prefix property of the reader is TRUE.
<p> The argument <em>namespaceURI</em> is the namespace URI, or a null string if the
element has no namespace URI or if no namespace processing is done. <em>localName</em> is the local name (without prefix), or a null string if no
namespace processing is done, <em>qName</em> is the qualified name (with prefix)
and <em>atts</em> are the attributes attached to the element. If there are no
attributes, <em>atts</em> is an empty attributes object.
<p> If this function returns FALSE the reader stops parsing and reports
an error. The reader uses the function <a href="#errorString">errorString</a>() to get the error
message.
<p> See also the <a href="xml.html#sax2Namespaces">namespace description</a>.
<p> <p>See also <a href="#endElement">endElement</a>().

<p>Example: <a href="xml-sax-walkthrough.html#x2138">xml/tagreader/structureparser.cpp</a>.
<h3 class=fn>bool <a name="startPrefixMapping"></a>QXmlContentHandler::startPrefixMapping ( const&nbsp;<a href="qstring.html">QString</a>&nbsp;&amp;&nbsp;prefix, const&nbsp;<a href="qstring.html">QString</a>&nbsp;&amp;&nbsp;uri )<tt> [pure virtual]</tt>
</h3>

<p> The reader calls this function to signal the begin of a prefix-URI
namespace mapping scope. This information is not necessary for normal
namespace processing since the reader automatically replaces prefixes for
element and attribute names.
<p> Note that <a href="#startPrefixMapping">startPrefixMapping</a>() and <a href="#endPrefixMapping">endPrefixMapping</a>() calls are not
guaranteed to be properly nested relative to each other: all
startPrefixMapping() events occur before the corresponding
<a href="#startElement">startElement</a>() event, and all endPrefixMapping() events occur after
the corresponding <a href="#endElement">endElement</a>() event, but their order is not
otherwise guaranteed.
<p> The argument <em>prefix</em> is the namespace prefix being declared and the
argument <em>uri</em> is the namespace URI the prefix is mapped to.
<p> If this function returns FALSE the reader stops parsing and reports
an error. The reader uses the function <a href="#errorString">errorString</a>() to get the error
message.
<p> See also the <a href="xml.html#sax2Namespaces">namespace description</a>.
<p> <p>See also <a href="#endPrefixMapping">endPrefixMapping</a>().

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