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<h1 class="title">plugin.cpp Example File</h1>
<span class="small-subtitle">demos/arthurplugin/plugin.cpp</span>
<!-- $$$demos/arthurplugin/plugin.cpp-description -->
<div class="descr"> <a name="details"></a>
<pre class="cpp"> <span class="comment">/****************************************************************************
 **
 ** Copyright (C) 2015 The Qt Company Ltd.
 ** Contact: http://www.qt.io/licensing/
 **
 ** This file is part of the demonstration applications of the Qt Toolkit.
 **
 ** $QT_BEGIN_LICENSE:LGPL$
 ** Commercial License Usage
 ** Licensees holding valid commercial Qt licenses may use this file in
 ** accordance with the commercial license agreement provided with the
 ** Software or, alternatively, in accordance with the terms contained in
 ** a written agreement between you and The Qt Company. For licensing terms
 ** and conditions see http://www.qt.io/terms-conditions. For further
 ** information use the contact form at http://www.qt.io/contact-us.
 **
 ** GNU Lesser General Public License Usage
 ** Alternatively, this file may be used under the terms of the GNU Lesser
 ** General Public License version 2.1 or version 3 as published by the Free
 ** Software Foundation and appearing in the file LICENSE.LGPLv21 and
 ** LICENSE.LGPLv3 included in the packaging of this file. Please review the
 ** following information to ensure the GNU Lesser General Public License
 ** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
 ** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
 **
 ** As a special exception, The Qt Company gives you certain additional
 ** rights. These rights are described in The Qt Company LGPL Exception
 ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
 **
 ** GNU General Public License Usage
 ** Alternatively, this file may be used under the terms of the GNU
 ** General Public License version 3.0 as published by the Free Software
 ** Foundation and appearing in the file LICENSE.GPL included in the
 ** packaging of this file.  Please review the following information to
 ** ensure the GNU General Public License version 3.0 requirements will be
 ** met: http://www.gnu.org/copyleft/gpl.html.
 **
 ** $QT_END_LICENSE$
 **
 ****************************************************************************/</span>

 <span class="preprocessor">#include &lt;QtDesigner/QDesignerContainerExtension&gt;</span>
 <span class="preprocessor">#include &lt;QtDesigner/QDesignerCustomWidgetInterface&gt;</span>

 <span class="preprocessor">#include &lt;QtCore/qplugin.h&gt;</span>
 <span class="preprocessor">#include &lt;QtGui/QIcon&gt;</span>
 <span class="preprocessor">#include &lt;QtGui/QPixmap&gt;</span>

 <span class="preprocessor">#include &quot;xform.h&quot;</span>
 <span class="preprocessor">#include &quot;pathdeform.h&quot;</span>
 <span class="preprocessor">#include &quot;gradients.h&quot;</span>
 <span class="preprocessor">#include &quot;pathstroke.h&quot;</span>
 <span class="preprocessor">#include &quot;hoverpoints.h&quot;</span>
 <span class="preprocessor">#include &quot;composition.h&quot;</span>

 QT_FORWARD_DECLARE_CLASS(<span class="type"><a href="qdesignerformeditorinterface.html">QDesignerFormEditorInterface</a></span>)

 <span class="comment">// Specify &quot;text&quot; to be a singleline property (no richtext)</span>
 <span class="keyword">static</span> <span class="keyword">inline</span> <span class="type"><a href="qstring.html">QString</a></span> textSingleLinePropertyDeclaration(<span class="keyword">const</span> <span class="type"><a href="qstring.html">QString</a></span> <span class="operator">&amp;</span>className)
 {
     <span class="type"><a href="qstring.html">QString</a></span> rc <span class="operator">=</span> QLatin1String(
             <span class="string">&quot;&lt;customwidgets&gt;\n&quot;</span>
             <span class="string">&quot;  &lt;customwidget&gt;\n&quot;</span>
             <span class="string">&quot;    &lt;class&gt;&quot;</span>);
     rc <span class="operator">+</span><span class="operator">=</span> className;
     rc <span class="operator">+</span><span class="operator">=</span> QLatin1String(<span class="string">&quot;&lt;/class&gt;\n&quot;</span>
             <span class="string">&quot;    &lt;propertyspecifications&gt;\n&quot;</span>
             <span class="string">&quot;      &lt;stringpropertyspecification name=\&quot;text\&quot; type=\&quot;singleline\&quot;/&gt;\n&quot;</span>
             <span class="string">&quot;    &lt;/propertyspecifications&gt;\n&quot;</span>
             <span class="string">&quot;  &lt;/customwidget&gt;\n&quot;</span>
             <span class="string">&quot;&lt;/customwidgets&gt;\n&quot;</span>);
     <span class="keyword">return</span> rc;
 }

 <span class="comment">// Plain XML for a custom widget</span>
 <span class="keyword">static</span> <span class="keyword">inline</span> <span class="type"><a href="qstring.html">QString</a></span> customWidgetDomXml(<span class="keyword">const</span> <span class="type"><a href="qstring.html">QString</a></span> <span class="operator">&amp;</span>className<span class="operator">,</span>
                                          <span class="keyword">const</span> <span class="type"><a href="qstring.html">QString</a></span> <span class="operator">&amp;</span>customSection <span class="operator">=</span> <span class="type"><a href="qstring.html">QString</a></span>())
 {
     <span class="type"><a href="qstring.html">QString</a></span> rc <span class="operator">=</span> QLatin1String(<span class="string">&quot;&lt;ui language=\&quot;c++\&quot;&gt;&lt;widget class=\&quot;&quot;</span>);
     rc <span class="operator">+</span><span class="operator">=</span> className;
     rc <span class="operator">+</span><span class="operator">=</span> QLatin1String(<span class="string">&quot;\&quot; name=\&quot;&quot;</span>);
     <span class="type"><a href="qstring.html">QString</a></span> objectName <span class="operator">=</span> className;
     objectName<span class="operator">[</span><span class="number">0</span><span class="operator">]</span> <span class="operator">=</span> objectName<span class="operator">.</span>at(<span class="number">0</span>)<span class="operator">.</span>toLower();
     rc <span class="operator">+</span><span class="operator">=</span> objectName;
     rc <span class="operator">+</span><span class="operator">=</span> QLatin1String(<span class="string">&quot;\&quot;/&gt;&quot;</span>);
     rc <span class="operator">+</span><span class="operator">=</span> customSection;
     rc <span class="operator">+</span><span class="operator">=</span> QLatin1String(<span class="string">&quot;&lt;/ui&gt;&quot;</span>);
     <span class="keyword">return</span> rc;
 }

 <span class="keyword">class</span> PathDeformRendererEx : <span class="keyword">public</span> PathDeformRenderer
 {
     Q_OBJECT
 <span class="keyword">public</span>:
     PathDeformRendererEx(<span class="type"><a href="qwidget.html">QWidget</a></span> <span class="operator">*</span>parent) : PathDeformRenderer(parent) { }
     <span class="type"><a href="qsize.html">QSize</a></span> sizeHint() <span class="keyword">const</span> { <span class="keyword">return</span> <span class="type"><a href="qsize.html">QSize</a></span>(<span class="number">300</span><span class="operator">,</span> <span class="number">200</span>); }
 };

 <span class="keyword">class</span> DemoPlugin : <span class="keyword">public</span> <span class="type"><a href="qdesignercustomwidgetinterface.html">QDesignerCustomWidgetInterface</a></span>
 {
     Q_INTERFACES(<span class="type"><a href="qdesignercustomwidgetinterface.html">QDesignerCustomWidgetInterface</a></span>)

 <span class="keyword">protected</span>:
     <span class="keyword">explicit</span> DemoPlugin(<span class="keyword">const</span> <span class="type"><a href="qstring.html">QString</a></span> <span class="operator">&amp;</span>className<span class="operator">,</span> <span class="keyword">const</span> <span class="type"><a href="qstring.html">QString</a></span> <span class="operator">&amp;</span>customSection <span class="operator">=</span> <span class="type"><a href="qstring.html">QString</a></span>());

 <span class="keyword">public</span>:
     <span class="type"><a href="qstring.html">QString</a></span> name() <span class="keyword">const</span> { <span class="keyword">return</span> m_className; }
     <span class="type">bool</span> isContainer() <span class="keyword">const</span> { <span class="keyword">return</span> <span class="keyword">false</span>; }
     <span class="type">bool</span> isInitialized() <span class="keyword">const</span> { <span class="keyword">return</span> m_initialized; }
     <span class="type"><a href="qicon.html">QIcon</a></span> icon() <span class="keyword">const</span> { <span class="keyword">return</span> <span class="type"><a href="qicon.html">QIcon</a></span>(); }
     <span class="type"><a href="qstring.html">QString</a></span> codeTemplate() <span class="keyword">const</span> { <span class="keyword">return</span> <span class="type"><a href="qstring.html">QString</a></span>(); }
     <span class="type"><a href="qstring.html">QString</a></span> whatsThis() <span class="keyword">const</span> { <span class="keyword">return</span> <span class="type"><a href="qstring.html">QString</a></span>(); }
     <span class="type"><a href="qstring.html">QString</a></span> toolTip() <span class="keyword">const</span> { <span class="keyword">return</span> <span class="type"><a href="qstring.html">QString</a></span>(); }
     <span class="type"><a href="qstring.html">QString</a></span> group() <span class="keyword">const</span> { <span class="keyword">return</span> <span class="string">&quot;Arthur Widgets [Demo]&quot;</span>; }
     <span class="type">void</span> initialize(<span class="type"><a href="qdesignerformeditorinterface.html">QDesignerFormEditorInterface</a></span> <span class="operator">*</span>)
     {
         <span class="keyword">if</span> (m_initialized)
             <span class="keyword">return</span>;
         m_initialized <span class="operator">=</span> <span class="keyword">true</span>;
     }
     <span class="type"><a href="qstring.html">QString</a></span> domXml() <span class="keyword">const</span> { <span class="keyword">return</span> m_domXml; }

 <span class="keyword">private</span>:
     <span class="keyword">const</span> <span class="type"><a href="qstring.html">QString</a></span> m_className;
     <span class="keyword">const</span> <span class="type"><a href="qstring.html">QString</a></span> m_domXml;
     <span class="type">bool</span> m_initialized;
 };

 DemoPlugin<span class="operator">::</span>DemoPlugin(<span class="keyword">const</span> <span class="type"><a href="qstring.html">QString</a></span> <span class="operator">&amp;</span>className<span class="operator">,</span> <span class="keyword">const</span> <span class="type"><a href="qstring.html">QString</a></span> <span class="operator">&amp;</span>customSection) :
     m_className(className)<span class="operator">,</span>
     m_domXml(customWidgetDomXml(className<span class="operator">,</span> customSection))<span class="operator">,</span>
     m_initialized(<span class="keyword">false</span>)
 {
 }

 <span class="keyword">class</span> DeformPlugin : <span class="keyword">public</span> <span class="type"><a href="qobject.html">QObject</a></span><span class="operator">,</span> <span class="keyword">public</span> DemoPlugin
 {
     Q_OBJECT

 <span class="keyword">public</span>:
     <span class="keyword">explicit</span> DeformPlugin(<span class="type"><a href="qobject.html">QObject</a></span> <span class="operator">*</span>parent <span class="operator">=</span> <span class="number">0</span>);
     <span class="type"><a href="qstring.html">QString</a></span> includeFile() <span class="keyword">const</span> { <span class="keyword">return</span> QLatin1String(<span class="string">&quot;deform.h&quot;</span>); }

     <span class="type"><a href="qwidget.html">QWidget</a></span> <span class="operator">*</span>createWidget(<span class="type"><a href="qwidget.html">QWidget</a></span> <span class="operator">*</span>parent)
     {
         PathDeformRenderer <span class="operator">*</span>deform <span class="operator">=</span> <span class="keyword">new</span> PathDeformRendererEx(parent);
         deform<span class="operator">-</span><span class="operator">&gt;</span>setRadius(<span class="number">70</span>);
         deform<span class="operator">-</span><span class="operator">&gt;</span>setAnimated(<span class="keyword">false</span>);
         deform<span class="operator">-</span><span class="operator">&gt;</span>setFontSize(<span class="number">20</span>);
         deform<span class="operator">-</span><span class="operator">&gt;</span>setText(QLatin1String(<span class="string">&quot;Arthur Widgets Demo&quot;</span>));

         <span class="keyword">return</span> deform;
     }
 };

 DeformPlugin<span class="operator">::</span>DeformPlugin(<span class="type"><a href="qobject.html">QObject</a></span> <span class="operator">*</span>parent) :
     <span class="type"><a href="qobject.html">QObject</a></span>(parent)<span class="operator">,</span>
     DemoPlugin(QLatin1String(<span class="string">&quot;PathDeformRendererEx&quot;</span>)<span class="operator">,</span>
                textSingleLinePropertyDeclaration(QLatin1String(<span class="string">&quot;PathDeformRendererEx&quot;</span>)))
 {
 }

 <span class="keyword">class</span> XFormRendererEx : <span class="keyword">public</span> XFormView
 {
     Q_OBJECT
 <span class="keyword">public</span>:
     XFormRendererEx(<span class="type"><a href="qwidget.html">QWidget</a></span> <span class="operator">*</span>parent) : XFormView(parent) {}
     <span class="type"><a href="qsize.html">QSize</a></span> sizeHint() <span class="keyword">const</span> { <span class="keyword">return</span> <span class="type"><a href="qsize.html">QSize</a></span>(<span class="number">300</span><span class="operator">,</span> <span class="number">200</span>); }
 };

 <span class="keyword">class</span> XFormPlugin : <span class="keyword">public</span> <span class="type"><a href="qobject.html">QObject</a></span><span class="operator">,</span> <span class="keyword">public</span> DemoPlugin
 {
     Q_OBJECT
 <span class="keyword">public</span>:
     <span class="keyword">explicit</span> XFormPlugin(<span class="type"><a href="qobject.html">QObject</a></span> <span class="operator">*</span>parent <span class="operator">=</span> <span class="number">0</span>);
     <span class="type"><a href="qstring.html">QString</a></span> includeFile() <span class="keyword">const</span> { <span class="keyword">return</span> QLatin1String(<span class="string">&quot;xform.h&quot;</span>); }

     <span class="type"><a href="qwidget.html">QWidget</a></span> <span class="operator">*</span>createWidget(<span class="type"><a href="qwidget.html">QWidget</a></span> <span class="operator">*</span>parent)
     {
         XFormRendererEx <span class="operator">*</span>xform <span class="operator">=</span> <span class="keyword">new</span> XFormRendererEx(parent);
         xform<span class="operator">-</span><span class="operator">&gt;</span>setText(QLatin1String(<span class="string">&quot;Qt - Hello World!!&quot;</span>));
         xform<span class="operator">-</span><span class="operator">&gt;</span>setPixmap(<span class="type"><a href="qpixmap.html">QPixmap</a></span>(QLatin1String(<span class="string">&quot;:/trolltech/arthurplugin/bg1.jpg&quot;</span>)));
         <span class="keyword">return</span> xform;
     }
 };

 XFormPlugin<span class="operator">::</span>XFormPlugin(<span class="type"><a href="qobject.html">QObject</a></span> <span class="operator">*</span>parent) :
     <span class="type"><a href="qobject.html">QObject</a></span>(parent)<span class="operator">,</span>
     DemoPlugin(QLatin1String(<span class="string">&quot;XFormRendererEx&quot;</span>)<span class="operator">,</span>
                textSingleLinePropertyDeclaration(QLatin1String(<span class="string">&quot;XFormRendererEx&quot;</span>)))
 {
 }

 <span class="keyword">class</span> GradientEditorPlugin : <span class="keyword">public</span> <span class="type"><a href="qobject.html">QObject</a></span><span class="operator">,</span> <span class="keyword">public</span> DemoPlugin
 {
     Q_OBJECT
 <span class="keyword">public</span>:
     <span class="keyword">explicit</span> GradientEditorPlugin(<span class="type"><a href="qobject.html">QObject</a></span> <span class="operator">*</span>parent <span class="operator">=</span> <span class="number">0</span>) : <span class="type"><a href="qobject.html">QObject</a></span>(parent)<span class="operator">,</span> DemoPlugin(QLatin1String(<span class="string">&quot;GradientEditor&quot;</span>)) { }
     <span class="type"><a href="qstring.html">QString</a></span> includeFile() <span class="keyword">const</span> { <span class="keyword">return</span> <span class="string">&quot;gradients.h&quot;</span>; }

     <span class="type"><a href="qwidget.html">QWidget</a></span> <span class="operator">*</span>createWidget(<span class="type"><a href="qwidget.html">QWidget</a></span> <span class="operator">*</span>parent)
     {
         GradientEditor <span class="operator">*</span>editor <span class="operator">=</span> <span class="keyword">new</span> GradientEditor(parent);
         <span class="keyword">return</span> editor;
     }
 };

 <span class="keyword">class</span> GradientRendererEx : <span class="keyword">public</span> GradientRenderer
 {
     Q_OBJECT
 <span class="keyword">public</span>:
     GradientRendererEx(<span class="type"><a href="qwidget.html">QWidget</a></span> <span class="operator">*</span>p) : GradientRenderer(p) { }
     <span class="type"><a href="qsize.html">QSize</a></span> sizeHint() <span class="keyword">const</span> { <span class="keyword">return</span> <span class="type"><a href="qsize.html">QSize</a></span>(<span class="number">300</span><span class="operator">,</span> <span class="number">200</span>); }
 };

 <span class="keyword">class</span> GradientRendererPlugin : <span class="keyword">public</span> <span class="type"><a href="qobject.html">QObject</a></span><span class="operator">,</span> <span class="keyword">public</span> DemoPlugin
 {
     Q_OBJECT
 <span class="keyword">public</span>:
     GradientRendererPlugin(<span class="type"><a href="qobject.html">QObject</a></span> <span class="operator">*</span>parent <span class="operator">=</span> <span class="number">0</span>) : <span class="type"><a href="qobject.html">QObject</a></span>(parent)<span class="operator">,</span> DemoPlugin(QLatin1String(<span class="string">&quot;GradientRendererEx&quot;</span>)) { }
     <span class="type"><a href="qstring.html">QString</a></span> includeFile() <span class="keyword">const</span> { <span class="keyword">return</span> QLatin1String(<span class="string">&quot;gradients.h&quot;</span>); }

     <span class="type"><a href="qwidget.html">QWidget</a></span> <span class="operator">*</span>createWidget(<span class="type"><a href="qwidget.html">QWidget</a></span> <span class="operator">*</span>parent)
     {
         GradientRenderer <span class="operator">*</span>renderer <span class="operator">=</span> <span class="keyword">new</span> GradientRendererEx(parent);
         renderer<span class="operator">-</span><span class="operator">&gt;</span>setConicalGradient();
         <span class="keyword">return</span> renderer;
     }
 };

 <span class="keyword">class</span> PathStrokeRendererEx : <span class="keyword">public</span> PathStrokeRenderer
 {
     Q_OBJECT
 <span class="keyword">public</span>:
     <span class="keyword">explicit</span> PathStrokeRendererEx(<span class="type"><a href="qwidget.html">QWidget</a></span> <span class="operator">*</span>p) : PathStrokeRenderer(p) { }
     <span class="type"><a href="qsize.html">QSize</a></span> sizeHint() <span class="keyword">const</span> { <span class="keyword">return</span> <span class="type"><a href="qsize.html">QSize</a></span>(<span class="number">300</span><span class="operator">,</span> <span class="number">200</span>); }
 };

 <span class="keyword">class</span> StrokeRenderPlugin : <span class="keyword">public</span> <span class="type"><a href="qobject.html">QObject</a></span><span class="operator">,</span> <span class="keyword">public</span> DemoPlugin
 {
     Q_OBJECT
 <span class="keyword">public</span>:
     <span class="keyword">explicit</span> StrokeRenderPlugin(<span class="type"><a href="qobject.html">QObject</a></span> <span class="operator">*</span>parent <span class="operator">=</span> <span class="number">0</span>) : <span class="type"><a href="qobject.html">QObject</a></span>(parent)<span class="operator">,</span> DemoPlugin(QLatin1String(<span class="string">&quot;PathStrokeRendererEx&quot;</span>)) { }
     <span class="type"><a href="qstring.html">QString</a></span> includeFile() <span class="keyword">const</span> { <span class="keyword">return</span> QLatin1String(<span class="string">&quot;pathstroke.h&quot;</span>); }

     <span class="type"><a href="qwidget.html">QWidget</a></span> <span class="operator">*</span>createWidget(<span class="type"><a href="qwidget.html">QWidget</a></span> <span class="operator">*</span>parent)
     {
         PathStrokeRenderer <span class="operator">*</span>stroke <span class="operator">=</span> <span class="keyword">new</span> PathStrokeRendererEx(parent);
         <span class="keyword">return</span> stroke;
     }
 };

 <span class="keyword">class</span> CompositionModePlugin : <span class="keyword">public</span> <span class="type"><a href="qobject.html">QObject</a></span><span class="operator">,</span> <span class="keyword">public</span> DemoPlugin
 {
     Q_OBJECT
 <span class="keyword">public</span>:
     <span class="keyword">explicit</span> CompositionModePlugin(<span class="type"><a href="qobject.html">QObject</a></span> <span class="operator">*</span>parent <span class="operator">=</span> <span class="number">0</span>) : <span class="type"><a href="qobject.html">QObject</a></span>(parent)<span class="operator">,</span> DemoPlugin(QLatin1String(<span class="string">&quot;CompositionRenderer&quot;</span>)) { }
     <span class="type"><a href="qstring.html">QString</a></span> includeFile() <span class="keyword">const</span> { <span class="keyword">return</span> QLatin1String(<span class="string">&quot;composition.h&quot;</span>); }

     <span class="type"><a href="qwidget.html">QWidget</a></span> <span class="operator">*</span>createWidget(<span class="type"><a href="qwidget.html">QWidget</a></span> <span class="operator">*</span>parent)
     {
         CompositionRenderer <span class="operator">*</span>renderer <span class="operator">=</span> <span class="keyword">new</span> CompositionRenderer(parent);
         renderer<span class="operator">-</span><span class="operator">&gt;</span>setAnimationEnabled(<span class="keyword">false</span>);
         <span class="keyword">return</span> renderer;
     }
 };

 <span class="keyword">class</span> ArthurPlugins : <span class="keyword">public</span> <span class="type"><a href="qobject.html">QObject</a></span><span class="operator">,</span> <span class="keyword">public</span> <span class="type"><a href="qdesignercustomwidgetcollectioninterface.html">QDesignerCustomWidgetCollectionInterface</a></span>
 {
     Q_OBJECT
     Q_INTERFACES(<span class="type"><a href="qdesignercustomwidgetcollectioninterface.html">QDesignerCustomWidgetCollectionInterface</a></span>)

 <span class="keyword">public</span>:
     <span class="keyword">explicit</span> ArthurPlugins(<span class="type"><a href="qobject.html">QObject</a></span> <span class="operator">*</span>parent <span class="operator">=</span> <span class="number">0</span>);
     <span class="type"><a href="qlist.html">QList</a></span><span class="operator">&lt;</span><span class="type"><a href="qdesignercustomwidgetinterface.html">QDesignerCustomWidgetInterface</a></span><span class="operator">*</span><span class="operator">&gt;</span> customWidgets() <span class="keyword">const</span> { <span class="keyword">return</span> m_plugins; }

 <span class="keyword">private</span>:
     <span class="type"><a href="qlist.html">QList</a></span><span class="operator">&lt;</span><span class="type"><a href="qdesignercustomwidgetinterface.html">QDesignerCustomWidgetInterface</a></span> <span class="operator">*</span><span class="operator">&gt;</span> m_plugins;
 };

 ArthurPlugins<span class="operator">::</span>ArthurPlugins(<span class="type"><a href="qobject.html">QObject</a></span> <span class="operator">*</span>parent) :
     <span class="type"><a href="qobject.html">QObject</a></span>(parent)
 {
     m_plugins <span class="operator">&lt;</span><span class="operator">&lt;</span> <span class="keyword">new</span> DeformPlugin(<span class="keyword">this</span>)
               <span class="operator">&lt;</span><span class="operator">&lt;</span> <span class="keyword">new</span> XFormPlugin(<span class="keyword">this</span>)
               <span class="operator">&lt;</span><span class="operator">&lt;</span> <span class="keyword">new</span> GradientEditorPlugin(<span class="keyword">this</span>)
               <span class="operator">&lt;</span><span class="operator">&lt;</span> <span class="keyword">new</span> GradientRendererPlugin(<span class="keyword">this</span>)
               <span class="operator">&lt;</span><span class="operator">&lt;</span> <span class="keyword">new</span> StrokeRenderPlugin(<span class="keyword">this</span>)
               <span class="operator">&lt;</span><span class="operator">&lt;</span> <span class="keyword">new</span> CompositionModePlugin(<span class="keyword">this</span>);
 }

 <span class="preprocessor">#include &quot;plugin.moc&quot;</span>

 <a href="qtplugin.html#Q_EXPORT_PLUGIN2">Q_EXPORT_PLUGIN2</a>(ArthurPlugins<span class="operator">,</span> ArthurPlugins)</pre>
</div>
<!-- @@@demos/arthurplugin/plugin.cpp -->
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