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| 6 | <title>QImageFormatPlugin Class</title>
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| 31 | </td>
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| 32 | <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>
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| 33 |
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| 34 | <p>The QImageFormatPlugin class provides an abstract base for custom image format plugins.
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| 35 | <a href="#details">More...</a>
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| 36 | <p><tt>#include <<a href="qimageformatplugin-h.html">qimageformatplugin.h</a>></tt>
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| 37 | <p><a href="qimageformatplugin-members.html">List of all member functions.</a>
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| 38 | <h2>Public Members</h2>
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| 39 | <ul>
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| 40 | <li class=fn><a href="#QImageFormatPlugin"><b>QImageFormatPlugin</b></a> ()</li>
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| 41 | <li class=fn><a href="#~QImageFormatPlugin"><b>~QImageFormatPlugin</b></a> ()</li>
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| 42 | <li class=fn>virtual QStringList <a href="#keys"><b>keys</b></a> () const = 0</li>
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| 43 | <li class=fn>virtual bool <a href="#installIOHandler"><b>installIOHandler</b></a> ( const QString & format ) = 0</li>
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| 44 | </ul>
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| 45 | <hr><a name="details"></a><h2>Detailed Description</h2>
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| 46 |
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| 47 |
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| 48 | The QImageFormatPlugin class provides an abstract base for custom image format plugins.
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| 49 | <p>
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| 50 | <p> The image format plugin is a simple plugin interface that makes
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| 51 | it easy to create custom image formats that can be used
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| 52 | transparently by applications.
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| 53 | <p> Writing an image format plugin is achieved by subclassing this
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| 54 | base class, reimplementing the pure virtual functions <a href="#keys">keys</a>() and
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| 55 | <a href="#installIOHandler">installIOHandler</a>(), and exporting the class with the
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| 56 | Q_EXPORT_PLUGIN macro. See the <a href="plugins-howto.html">Plugins
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| 57 | documentation</a> for details.
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| 58 | <p>See also <a href="plugins.html">Plugins</a>.
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| 59 |
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| 60 | <hr><h2>Member Function Documentation</h2>
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| 61 | <h3 class=fn><a name="QImageFormatPlugin"></a>QImageFormatPlugin::QImageFormatPlugin ()
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| 62 | </h3>
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| 63 | Constructs an image format plugin. This is invoked automatically
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| 64 | by the Q_EXPORT_PLUGIN macro.
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| 65 |
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| 66 | <h3 class=fn><a name="~QImageFormatPlugin"></a>QImageFormatPlugin::~QImageFormatPlugin ()
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| 67 | </h3>
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| 68 | Destroys the image format plugin.
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| 69 | <p> You never have to call this explicitly. Qt destroys a plugin
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| 70 | automatically when it is no longer used.
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| 71 |
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| 72 | <h3 class=fn>bool <a name="installIOHandler"></a>QImageFormatPlugin::installIOHandler ( const <a href="qstring.html">QString</a> & format )<tt> [pure virtual]</tt>
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| 73 | </h3>
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| 74 |
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| 75 | <p> Installs a <a href="qimageio.html">QImageIO</a> image I/O handler for the image format <em>format</em>.
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| 76 | <p> <p>See also <a href="#keys">keys</a>().
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| 77 |
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| 78 | <h3 class=fn><a href="qstringlist.html">QStringList</a> <a name="keys"></a>QImageFormatPlugin::keys () const<tt> [pure virtual]</tt>
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| 79 | </h3>
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| 80 |
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| 81 | <p> Returns the list of image formats this plugin supports.
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| 82 | <p> <p>See also <a href="#installIOHandler">installIOHandler</a>().
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| 83 |
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| 84 | <!-- eof -->
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| 85 | <hr><p>
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| 86 | This file is part of the <a href="index.html">Qt toolkit</a>.
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| 87 | Copyright © 1995-2007
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