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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>QImageFormatPlugin Class Reference</h1>

<p>The QImageFormatPlugin class provides an abstract base for custom image format plugins.
<a href="#details">More...</a>
<p><tt>#include &lt;<a href="qimageformatplugin-h.html">qimageformatplugin.h</a>&gt;</tt>
<p><a href="qimageformatplugin-members.html">List of all member functions.</a>
<h2>Public Members</h2>
<ul>
<li class=fn><a href="#QImageFormatPlugin"><b>QImageFormatPlugin</b></a> ()</li>
<li class=fn><a href="#~QImageFormatPlugin"><b>~QImageFormatPlugin</b></a> ()</li>
<li class=fn>virtual QStringList <a href="#keys"><b>keys</b></a> () const = 0</li>
<li class=fn>virtual bool <a href="#installIOHandler"><b>installIOHandler</b></a> ( const&nbsp;QString&nbsp;&amp;&nbsp;format ) = 0</li>
</ul>
<hr><a name="details"></a><h2>Detailed Description</h2>


The QImageFormatPlugin class provides an abstract base for custom image format plugins.
<p> 
<p> The image format plugin is a simple plugin interface that makes
it easy to create custom image formats that can be used
transparently by applications.
<p> Writing an image format plugin is achieved by subclassing this
base class, reimplementing the pure virtual functions <a href="#keys">keys</a>() and
<a href="#installIOHandler">installIOHandler</a>(), and exporting the class with the
Q_EXPORT_PLUGIN macro.  See the <a href="plugins-howto.html">Plugins
    documentation</a> for details.
<p>See also <a href="plugins.html">Plugins</a>.

<hr><h2>Member Function Documentation</h2>
<h3 class=fn><a name="QImageFormatPlugin"></a>QImageFormatPlugin::QImageFormatPlugin ()
</h3>
Constructs an image format plugin. This is invoked automatically
by the Q_EXPORT_PLUGIN macro.

<h3 class=fn><a name="~QImageFormatPlugin"></a>QImageFormatPlugin::~QImageFormatPlugin ()
</h3>
Destroys the image format plugin.
<p> You never have to call this explicitly. Qt destroys a plugin
automatically when it is no longer used.

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

<p> Installs a <a href="qimageio.html">QImageIO</a> image I/O handler for the image format <em>format</em>.
<p> <p>See also <a href="#keys">keys</a>().

<h3 class=fn><a href="qstringlist.html">QStringList</a> <a name="keys"></a>QImageFormatPlugin::keys () const<tt> [pure virtual]</tt>
</h3>

<p> Returns the list of image formats this plugin supports.
<p> <p>See also <a href="#installIOHandler">installIOHandler</a>().

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