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diff --git a/examples/wayland/custom-extension/client/customextension.cpp b/examples/wayland/custom-extension/client/customextension.cpp
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+/****************************************************************************
+**
+** Copyright (C) 2015 The Qt Company Ltd.
+** Contact: http://www.qt.io/licensing/
+**
+** This file is part of the examples of the Qt Wayland module
+**
+** $QT_BEGIN_LICENSE:BSD$
+** You may use this file under the terms of the BSD license as follows:
+**
+** "Redistribution and use in source and binary forms, with or without
+** modification, are permitted provided that the following conditions are
+** met:
+**   * Redistributions of source code must retain the above copyright
+**     notice, this list of conditions and the following disclaimer.
+**   * Redistributions in binary form must reproduce the above copyright
+**     notice, this list of conditions and the following disclaimer in
+**     the documentation and/or other materials provided with the
+**     distribution.
+**   * Neither the name of The Qt Company Ltd nor the names of its
+**     contributors may be used to endorse or promote products derived
+**     from this software without specific prior written permission.
+**
+**
+** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "customextension.h"
+#include <QtWaylandClient/private/qwaylanddisplay_p.h>
+#include <QtWaylandClient/private/qwaylandintegration_p.h>
+
+#include <QDebug>
+
+QT_BEGIN_NAMESPACE
+
+namespace QtWaylandClient {
+
+CustomExtension::CustomExtension(QWaylandIntegration *wayland_integration)
+    : m_display(0)
+{
+    // TODO: add a simpler API for this
+
+    QtWaylandClient::QWaylandDisplay *wayland_display = wayland_integration->display();
+    struct ::wl_registry *registry = wl_display_get_registry(wayland_display->wl_display());
+    QtWayland::wl_registry::init(registry);
+}
+
+void CustomExtension::sendRequest(const QString &text, int value)
+{
+    qDebug() << "Client-side plugin sending request:" << text << value;
+    qtrequest(text, value);
+}
+
+void CustomExtension::example_extension_qtevent(struct wl_surface *surface,
+                                                uint32_t time,
+                                                const QString &text,
+                                                uint32_t value)
+{
+    qDebug() << "Client-side plugin received an event:" << surface << time << text << value;
+    emit eventReceived(text, value);
+}
+
+void CustomExtension::registry_global(uint32_t id, const QString &interface, uint32_t version)
+{
+    if (interface == QStringLiteral("qt_example_extension")) {
+        QtWayland::qt_example_extension::init(QtWayland::wl_registry::object(), id, version);
+    }
+}
+
+}
+
+QT_END_NAMESPACE