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<td align="right" valign="top" width="230"><a href="http://www.trolltech.com"><img src="images/trolltech-logo.png" align="right" width="203" height="32" border="0" /></a></td></tr></table><h1 align="center">QPictureFormatPlugin Class Reference<br /><sup><sup>[<a href="qtgui.html">QtGui</a> module]</sup></sup></h1>
<p>The QPictureFormatPlugin class provides an abstract base for custom picture format plugins. <a href="#details">More...</a></p>
<pre> #include <QPictureFormatPlugin></pre><p>Inherits <a href="qobject.html">QObject</a>.</p>
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<li><a href="qpictureformatplugin-members.html">List of all members, including inherited members</a></li>
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<h3>Public Functions</h3>
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<li><div class="fn"/><b><a href="qpictureformatplugin.html#QPictureFormatPlugin">QPictureFormatPlugin</a></b> ( QObject * <i>parent</i> = 0 )</li>
<li><div class="fn"/><b><a href="qpictureformatplugin.html#dtor.QPictureFormatPlugin">~QPictureFormatPlugin</a></b> ()</li>
<li><div class="fn"/>virtual bool <b><a href="qpictureformatplugin.html#installIOHandler">installIOHandler</a></b> ( const QString & <i>format</i> ) = 0</li>
<li><div class="fn"/>virtual QStringList <b><a href="qpictureformatplugin.html#keys">keys</a></b> () const = 0</li>
<li><div class="fn"/>virtual bool <b><a href="qpictureformatplugin.html#loadPicture">loadPicture</a></b> ( const QString & <i>format</i>, const QString & <i>fileName</i>, QPicture * <i>picture</i> )</li>
<li><div class="fn"/>virtual bool <b><a href="qpictureformatplugin.html#savePicture">savePicture</a></b> ( const QString & <i>format</i>, const QString & <i>fileName</i>, const QPicture & <i>picture</i> )</li>
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<li><div class="fn"/>29 public functions inherited from <a href="qobject.html#public-functions">QObject</a></li>
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<h3>Additional Inherited Members</h3>
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<li><div class="fn"/>1 property inherited from <a href="qobject.html#properties">QObject</a></li>
<li><div class="fn"/>1 public slot inherited from <a href="qobject.html#public-slots">QObject</a></li>
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<h2>Detailed Description</h2>
<p>The QPictureFormatPlugin class provides an abstract base for custom picture format plugins.</p>
<p>The picture format plugin is a simple plugin interface that makes it easy to create custom picture formats that can be used transparently by applications.</p>
<p>Writing an picture format plugin is achieved by subclassing this base class, reimplementing the pure virtual functions <a href="qpictureformatplugin.html#keys">keys</a>(), <a href="qpictureformatplugin.html#loadPicture">loadPicture</a>(), <a href="qpictureformatplugin.html#savePicture">savePicture</a>(), and <a href="qpictureformatplugin.html#installIOHandler">installIOHandler</a>(), and exporting the class with the <a href="qtplugin.html#Q_EXPORT_PLUGIN2">Q_EXPORT_PLUGIN2</a>() macro.</p>
<p>See also <a href="plugins-howto.html">How to Create Qt Plugins</a>.</p>
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<h2>Member Function Documentation</h2>
<h3 class="fn"><a name="QPictureFormatPlugin"></a>QPictureFormatPlugin::QPictureFormatPlugin ( <a href="qobject.html">QObject</a> * <i>parent</i> = 0 )</h3>
<p>Constructs an picture format plugin with the given <i>parent</i>. This is invoked automatically by the <a href="qtplugin.html#Q_EXPORT_PLUGIN2">Q_EXPORT_PLUGIN2</a>() macro.</p>
<h3 class="fn"><a name="dtor.QPictureFormatPlugin"></a>QPictureFormatPlugin::~QPictureFormatPlugin ()</h3>
<p>Destroys the picture format plugin.</p>
<p>You never have to call this explicitly. Qt destroys a plugin automatically when it is no longer used.</p>
<h3 class="fn"><a name="installIOHandler"></a>bool QPictureFormatPlugin::installIOHandler ( const <a href="qstring.html">QString</a> & <i>format</i> ) <tt> [pure virtual]</tt></h3>
<p>Installs a <a href="qpictureio.html">QPictureIO</a> picture I/O handler for the picture format <i>format</i>.</p>
<p>See also <a href="qpictureformatplugin.html#keys">keys</a>().</p>
<h3 class="fn"><a name="keys"></a><a href="qstringlist.html">QStringList</a> QPictureFormatPlugin::keys () const <tt> [pure virtual]</tt></h3>
<p>Returns the list of picture formats this plugin supports.</p>
<p>See also <a href="qpictureformatplugin.html#installIOHandler">installIOHandler</a>().</p>
<h3 class="fn"><a name="loadPicture"></a>bool QPictureFormatPlugin::loadPicture ( const <a href="qstring.html">QString</a> & <i>format</i>, const <a href="qstring.html">QString</a> & <i>fileName</i>, <a href="qpicture.html">QPicture</a> * <i>picture</i> ) <tt> [virtual]</tt></h3>
<p>Loads the picture stored in the file called <i>fileName</i>, with the given <i>format</i>, into *<i>picture</i>. Returns true on success; otherwise returns false.</p>
<p>See also <a href="qpictureformatplugin.html#savePicture">savePicture</a>().</p>
<h3 class="fn"><a name="savePicture"></a>bool QPictureFormatPlugin::savePicture ( const <a href="qstring.html">QString</a> & <i>format</i>, const <a href="qstring.html">QString</a> & <i>fileName</i>, const <a href="qpicture.html">QPicture</a> & <i>picture</i> ) <tt> [virtual]</tt></h3>
<p>Saves the given <i>picture</i> into the file called <i>fileName</i>, using the specified <i>format</i>. Returns true on success; otherwise returns false.</p>
<p>See also <a href="qpictureformatplugin.html#loadPicture">loadPicture</a>().</p>
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