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  <title>Qt Mobility 1.2: QNearFieldTagType4 Class Reference</title>
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    <a href="index.html" class="qtref"><span>QtMobility Reference Documentation</span></a>
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<h3><a name="toc">Contents</a></h3>
<ul>
<li class="level1"><a href="#public-functions">Public Functions</a></li>
<li class="level1"><a href="#protected-functions">Protected Functions</a></li>
<li class="level1"><a href="#details">Detailed Description</a></li>
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<h1 class="title">QNearFieldTagType4 Class Reference</h1>
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<p>The QNearFieldTagType4 class provides an interface for communicating with an NFC Tag Type 4 tag. <a href="#details">More...</a></p>
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<pre class="cpp"> <span class="preprocessor">#include &lt;QNearFieldTagType4&gt;</span></pre><p><b>Inherits: </b><a href="qnearfieldtarget.html">QNearFieldTarget</a>.</p>
<p>This class was introduced in Qt Mobility 1.2.</p>
<ul>
<li><a href="qnearfieldtagtype4-members.html">List of all members, including inherited members</a></li>
</ul>
<a name="public-functions"></a>
<h2>Public Functions</h2>
<table class="alignedsummary">
<tr><td class="memItemLeft rightAlign topAlign"> </td><td class="memItemRight bottomAlign"><b><a href="qnearfieldtagtype4.html#QNearFieldTagType4">QNearFieldTagType4</a></b> ( QObject * <i>parent</i> = 0 )</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> </td><td class="memItemRight bottomAlign"><b><a href="qnearfieldtagtype4.html#dtor.QNearFieldTagType4">~QNearFieldTagType4</a></b> ()</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> virtual RequestId </td><td class="memItemRight bottomAlign"><b><a href="qnearfieldtagtype4.html#read">read</a></b> ( quint16 <i>length</i> = 0, quint16 <i>startOffset</i> = 0 )</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> virtual RequestId </td><td class="memItemRight bottomAlign"><b><a href="qnearfieldtagtype4.html#select">select</a></b> ( const QByteArray &amp; <i>name</i> )</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> virtual RequestId </td><td class="memItemRight bottomAlign"><b><a href="qnearfieldtagtype4.html#select-2">select</a></b> ( quint16 <i>fileIdentifier</i> )</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> quint8 </td><td class="memItemRight bottomAlign"><b><a href="qnearfieldtagtype4.html#version">version</a></b> ()</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> virtual RequestId </td><td class="memItemRight bottomAlign"><b><a href="qnearfieldtagtype4.html#write">write</a></b> ( const QByteArray &amp; <i>data</i>, quint16 <i>startOffset</i> = 0 )</td></tr>
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<a name="reimplemented-public-functions"></a>
<h2>Reimplemented Public Functions</h2>
<table class="alignedsummary">
<tr><td class="memItemLeft rightAlign topAlign"> virtual Type </td><td class="memItemRight bottomAlign"><b><a href="qnearfieldtagtype4.html#type">type</a></b> () const</td></tr>
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<ul>
<li class="fn">13 public functions inherited from <a href="qnearfieldtarget.html#public-functions">QNearFieldTarget</a></li>
<li class="fn">29 public functions inherited from <a href="http://qt.nokia.com/doc/4.7/qobject.html#public-functions">QObject</a></li>
</ul>
<a name="reimplemented-protected-functions"></a>
<h2>Reimplemented Protected Functions</h2>
<table class="alignedsummary">
<tr><td class="memItemLeft rightAlign topAlign"> virtual bool </td><td class="memItemRight bottomAlign"><b><a href="qnearfieldtagtype4.html#handleResponse">handleResponse</a></b> ( const QNearFieldTarget::RequestId &amp; <i>id</i>, const QByteArray &amp; <i>response</i> )</td></tr>
</table>
<ul>
<li class="fn">1 protected function inherited from <a href="qnearfieldtarget.html#protected-functions">QNearFieldTarget</a></li>
<li class="fn">7 protected functions inherited from <a href="http://qt.nokia.com/doc/4.7/qobject.html#protected-functions">QObject</a></li>
</ul>
<h3>Additional Inherited Members</h3>
<ul>
<li class="fn">1 property inherited from <a href="http://qt.nokia.com/doc/4.7/qobject.html#properties">QObject</a></li>
<li class="fn">1 public slot inherited from <a href="http://qt.nokia.com/doc/4.7/qobject.html#public-slots">QObject</a></li>
<li class="fn">5 signals inherited from <a href="qnearfieldtarget.html#signals">QNearFieldTarget</a></li>
<li class="fn">1 signal inherited from <a href="http://qt.nokia.com/doc/4.7/qobject.html#signals">QObject</a></li>
<li class="fn">1 public variable inherited from <a href="http://qt.nokia.com/doc/4.7/qobject.html#public-variables">QObject</a></li>
<li class="fn">4 static public members inherited from <a href="http://qt.nokia.com/doc/4.7/qobject.html#static-public-members">QObject</a></li>
<li class="fn">1 protected function inherited from <a href="qnearfieldtarget.html#protected-functions">QNearFieldTarget</a></li>
<li class="fn">7 protected functions inherited from <a href="http://qt.nokia.com/doc/4.7/qobject.html#protected-functions">QObject</a></li>
<li class="fn">2 protected variables inherited from <a href="http://qt.nokia.com/doc/4.7/qobject.html#protected-variables">QObject</a></li>
</ul>
<a name="details"></a>
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<div class="descr">
<h2>Detailed Description</h2>
<p>The QNearFieldTagType4 class provides an interface for communicating with an NFC Tag Type 4 tag.</p>
</div>
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<div class="func">
<h2>Member Function Documentation</h2>
<!-- $$$QNearFieldTagType4[overload1]$$$QNearFieldTagType4QObject* -->
<h3 class="fn"><a name="QNearFieldTagType4"></a>QNearFieldTagType4::<span class="name">QNearFieldTagType4</span> ( <span class="type"><a href="http://qt.nokia.com/doc/4.7/qobject.html">QObject</a></span> * <i>parent</i> = 0 )</h3>
<p>Constructs a new tag type 4 near field target with <i>parent</i>.</p>
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<!-- $$$~QNearFieldTagType4[overload1]$$$~QNearFieldTagType4 -->
<h3 class="fn"><a name="dtor.QNearFieldTagType4"></a>QNearFieldTagType4::<span class="name">~QNearFieldTagType4</span> ()</h3>
<p>Destroys the tag type 4 near field target.</p>
<!-- @@@~QNearFieldTagType4 -->
<!-- $$$handleResponse[overload1]$$$handleResponseconstQNearFieldTarget::RequestId&constQByteArray& -->
<h3 class="fn"><a name="handleResponse"></a><span class="type">bool</span> QNearFieldTagType4::<span class="name">handleResponse</span> ( const <span class="type"><a href="qnearfieldtarget-requestid.html">QNearFieldTarget::RequestId</a></span> &amp; <i>id</i>, const <span class="type"><a href="http://qt.nokia.com/doc/4.7/qbytearray.html">QByteArray</a></span> &amp; <i>response</i> )<tt> [virtual protected]</tt></h3>
<p>Reimplemented from <a href="qnearfieldtarget.html#handleResponse">QNearFieldTarget::handleResponse</a>().</p>
<!-- @@@handleResponse -->
<!-- $$$read[overload1]$$$readquint16quint16 -->
<h3 class="fn"><a name="read"></a><span class="type"><a href="qnearfieldtarget-requestid.html">RequestId</a></span> QNearFieldTagType4::<span class="name">read</span> ( <span class="type"><a href="http://qt.nokia.com/doc/4.7/qtglobal.html#quint16-typedef">quint16</a></span> <i>length</i> = 0, <span class="type"><a href="http://qt.nokia.com/doc/4.7/qtglobal.html#quint16-typedef">quint16</a></span> <i>startOffset</i> = 0 )<tt> [virtual]</tt></h3>
<p>Requests that <i>length</i> bytes be read from the currently selected file starting from <i>startOffset</i>. If <i>length</i> is 0 all data or the maximum read size bytes will be read, whichever is smaller. Returns a request id which can be used to track the completion status of the request.</p>
<p>Once the request completes successfully the response can be retrieved from the <a href="qnearfieldtarget.html#requestResponse">requestResponse</a>() function. The response of this request will be a <a href="http://qt.nokia.com/doc/4.7/qbytearray.html">QByteArray</a>.</p>
<p><b>See also </b><a href="qnearfieldtarget.html#requestCompleted">requestCompleted</a>() and <a href="qnearfieldtarget.html#waitForRequestCompleted">waitForRequestCompleted</a>().</p>
<!-- @@@read -->
<!-- $$$select[overload1]$$$selectconstQByteArray& -->
<h3 class="fn"><a name="select"></a><span class="type"><a href="qnearfieldtarget-requestid.html">RequestId</a></span> QNearFieldTagType4::<span class="name">select</span> ( const <span class="type"><a href="http://qt.nokia.com/doc/4.7/qbytearray.html">QByteArray</a></span> &amp; <i>name</i> )<tt> [virtual]</tt></h3>
<p>Requests that the file specified by <i>name</i> be selected. Upon success calls to <a href="qnearfieldtagtype4.html#read">read</a>() and <a href="qnearfieldtagtype4.html#write">write</a>() will act on the selected file. Returns a request id which can be used to track the completion status of the request.</p>
<p>Once the request completes the response can be retrieved from the <a href="qnearfieldtarget.html#requestResponse">requestResponse</a>() function. The response of this request will be a boolean value, true for success; otherwise false.</p>
<p><b>See also </b><a href="qnearfieldtarget.html#requestCompleted">requestCompleted</a>() and <a href="qnearfieldtarget.html#waitForRequestCompleted">waitForRequestCompleted</a>().</p>
<!-- @@@select -->
<!-- $$$select$$$selectquint16 -->
<h3 class="fn"><a name="select-2"></a><span class="type"><a href="qnearfieldtarget-requestid.html">RequestId</a></span> QNearFieldTagType4::<span class="name">select</span> ( <span class="type"><a href="http://qt.nokia.com/doc/4.7/qtglobal.html#quint16-typedef">quint16</a></span> <i>fileIdentifier</i> )<tt> [virtual]</tt></h3>
<p>Requests that the file specified by <i>fileIdentifier</i> be selected. Upon success calls to <a href="qnearfieldtagtype4.html#read">read</a>() and <a href="qnearfieldtagtype4.html#write">write</a>() will act on the selected file. Returns a request id which can be used to track the completion status of the request.</p>
<p>Once the request completes the response can be retrieved from the <a href="qnearfieldtarget.html#requestResponse">requestResponse</a>() function. The response of this request will be a boolean value, true for success; otherwise false.</p>
<p><b>See also </b><a href="qnearfieldtarget.html#requestCompleted">requestCompleted</a>() and <a href="qnearfieldtarget.html#waitForRequestCompleted">waitForRequestCompleted</a>().</p>
<!-- @@@select -->
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<h3 class="fn"><a name="type"></a><span class="type"><a href="qnearfieldtarget.html#Type-enum">Type</a></span> QNearFieldTagType4::<span class="name">type</span> () const<tt> [virtual]</tt></h3>
<p>Reimplemented from <a href="qnearfieldtarget.html#type">QNearFieldTarget::type</a>().</p>
<!-- @@@type -->
<!-- $$$version[overload1]$$$version -->
<h3 class="fn"><a name="version"></a><span class="type"><a href="http://qt.nokia.com/doc/4.7/qtglobal.html#quint8-typedef">quint8</a></span> QNearFieldTagType4::<span class="name">version</span> ()</h3>
<p>Returns the NFC Tag Type 4 specification version number that the tag supports.</p>
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<h3 class="fn"><a name="write"></a><span class="type"><a href="qnearfieldtarget-requestid.html">RequestId</a></span> QNearFieldTagType4::<span class="name">write</span> ( const <span class="type"><a href="http://qt.nokia.com/doc/4.7/qbytearray.html">QByteArray</a></span> &amp; <i>data</i>, <span class="type"><a href="http://qt.nokia.com/doc/4.7/qtglobal.html#quint16-typedef">quint16</a></span> <i>startOffset</i> = 0 )<tt> [virtual]</tt></h3>
<p>Writes <i>data</i> to the currently selected file starting at <i>startOffset</i>. Returns a request id which can be used to track the completion status of the request.</p>
<p>Once the request completes the response can be retrieved from the <a href="qnearfieldtarget.html#requestResponse">requestResponse</a>() function. The response of this request will be a boolean value, true for success; otherwise false.</p>
<p><b>See also </b><a href="qnearfieldtarget.html#requestCompleted">requestCompleted</a>() and <a href="qnearfieldtarget.html#waitForRequestCompleted">waitForRequestCompleted</a>().</p>
<!-- @@@write -->
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