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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>QIODeviceSource Class Reference<br><small>[obsolete]</small></h1>

<p>The QIODeviceSource class is a QDataSource that draws data from a QIODevice.
<a href="#details">More...</a>
<p><tt>#include &lt;<a href="qasyncio-h.html">qasyncio.h</a>&gt;</tt>
<p>Inherits <a href="qdatasource.html">QDataSource</a>.
<p><a href="qiodevicesource-members.html">List of all member functions.</a>
<h2>Public Members</h2>
<ul>
<li class=fn><a href="#QIODeviceSource"><b>QIODeviceSource</b></a> ( QIODevice&nbsp;*&nbsp;device, int&nbsp;buffer_size = 4096 )</li>
<li class=fn><a href="#~QIODeviceSource"><b>~QIODeviceSource</b></a> ()</li>
<li class=fn>virtual int <a href="#readyToSend"><b>readyToSend</b></a> ()</li>
<li class=fn>virtual void <a href="#sendTo"><b>sendTo</b></a> ( QDataSink&nbsp;*&nbsp;sink, int&nbsp;n )</li>
<li class=fn>virtual bool <a href="#rewindable"><b>rewindable</b></a> () const</li>
<li class=fn>virtual void <a href="#enableRewind"><b>enableRewind</b></a> ( bool&nbsp;on )</li>
<li class=fn>virtual void <a href="#rewind"><b>rewind</b></a> ()</li>
</ul>
<hr><a name="details"></a><h2>Detailed Description</h2>


<b>This class is obsolete.</b> It is provided to keep old source working. We strongly advise against using it in new code.
<p> The QIODeviceSource class is a QDataSource that draws data from a <a href="qiodevice.html">QIODevice</a>.
<p> This class encapsulates retrieving data from a QIODevice (such as a <a href="qfile.html">QFile</a>).

<hr><h2>Member Function Documentation</h2>
<h3 class=fn><a name="QIODeviceSource"></a>QIODeviceSource::QIODeviceSource ( <a href="qiodevice.html">QIODevice</a>&nbsp;*&nbsp;device, int&nbsp;buffer_size = 4096 )
</h3>
Constructs a QIODeviceSource from the <a href="qiodevice.html">QIODevice</a> <em>device</em>.  The QIODevice
<em>must</em> be dynamically allocated, becomes owned by the QIODeviceSource,
and will be deleted when the QIODeviceSource is destroyed. <em>buffer_size</em>
determines the size of buffering to use between asynchronous operations.
The higher the <em>buffer_size</em>, the more efficient, but the less interleaved
the operation will be with other processing.

<h3 class=fn><a name="~QIODeviceSource"></a>QIODeviceSource::~QIODeviceSource ()
</h3>
Destroys the QIODeviceSource, deleting the <a href="qiodevice.html">QIODevice</a> from which it was
constructed.

<h3 class=fn>void <a name="enableRewind"></a>QIODeviceSource::enableRewind ( bool&nbsp;on )<tt> [virtual]</tt>
</h3>
If <em>on</em> is set to TRUE then rewinding is enabled.  
No special action is taken.  If <em>on</em> is set to 
FALSE then rewinding is disabled.

<p>Reimplemented from <a href="qdatasource.html#enableRewind">QDataSource</a>.
<h3 class=fn>int <a name="readyToSend"></a>QIODeviceSource::readyToSend ()<tt> [virtual]</tt>
</h3>
Ready until end-of-file.

<p>Reimplemented from <a href="qdatasource.html#readyToSend">QDataSource</a>.
<h3 class=fn>void <a name="rewind"></a>QIODeviceSource::rewind ()<tt> [virtual]</tt>
</h3>
Calls reset() on the <a href="qiodevice.html">QIODevice</a>.

<p>Reimplemented from <a href="qdatasource.html#rewind">QDataSource</a>.
<h3 class=fn>bool <a name="rewindable"></a>QIODeviceSource::rewindable () const<tt> [virtual]</tt>
</h3>
All QIODeviceSource's are rewindable.

<p>Reimplemented from <a href="qdatasource.html#rewindable">QDataSource</a>.
<h3 class=fn>void <a name="sendTo"></a>QIODeviceSource::sendTo ( <a href="qdatasink.html">QDataSink</a>&nbsp;*&nbsp;sink, int&nbsp;n )<tt> [virtual]</tt>
</h3>
Reads a block of data and sends up to <em>n</em> bytes to the <em>sink</em>.

<p>Reimplemented from <a href="qdatasource.html#sendTo">QDataSource</a>.
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