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diff --git a/src/plugins/platforms/xcb/qxcbeventdispatcher.h b/src/plugins/platforms/xcb/qxcbeventdispatcher.h
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+/****************************************************************************
+**
+** Copyright (C) 2018 The Qt Company Ltd.
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of the QtCore module 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 https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://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 3 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL3 included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU Lesser General Public License version 3 requirements
+** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 2.0 or (at your option) the GNU General
+** Public license version 3 or any later version approved by the KDE Free
+** Qt Foundation. The licenses are as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
+** included in the packaging of this file. Please review the following
+** information to ensure the GNU General Public License requirements will
+** be met: https://www.gnu.org/licenses/gpl-2.0.html and
+** https://www.gnu.org/licenses/gpl-3.0.html.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+#ifndef QXCBEVENTDISPATCHER_H
+#define QXCBEVENTDISPATCHER_H
+
+#include <QtCore/QObject>
+#include <QtCore/QEventLoop>
+
+#include <QtCore/private/qeventdispatcher_unix_p.h>
+#if QT_CONFIG(glib)
+#include <QtCore/private/qeventdispatcher_glib_p.h>
+#include <glib.h>
+#endif
+
+QT_BEGIN_NAMESPACE
+
+class QXcbConnection;
+
+class QXcbUnixEventDispatcher : public QEventDispatcherUNIX
+{
+    Q_OBJECT
+public:
+    explicit QXcbUnixEventDispatcher(QXcbConnection *connection, QObject *parent = nullptr);
+    ~QXcbUnixEventDispatcher();
+    bool processEvents(QEventLoop::ProcessEventsFlags flags) override;
+
+    // Maybe some user code depends on deprecated QUnixEventDispatcherQPA::
+    // hasPendingEvents() / flush() implementation, so keep it around until
+    // Qt 6. These methods are deprecated in QAbstractEventDispatcher.
+    bool hasPendingEvents() override; // ### Qt 6 remove
+    void flush() override;            // ### Qt 6 remove
+
+private:
+    QXcbConnection *m_connection;
+};
+
+#if QT_CONFIG(glib)
+
+struct XcbEventSource;
+class QXcbGlibEventDispatcherPrivate;
+
+class QXcbGlibEventDispatcher : public QEventDispatcherGlib
+{
+    Q_OBJECT
+    Q_DECLARE_PRIVATE(QXcbGlibEventDispatcher)
+
+public:
+    explicit QXcbGlibEventDispatcher(QXcbConnection *connection, QObject *parent = nullptr);
+    ~QXcbGlibEventDispatcher();
+
+    bool processEvents(QEventLoop::ProcessEventsFlags flags) override;
+    QEventLoop::ProcessEventsFlags flags() const { return m_flags; }
+
+private:
+    XcbEventSource *m_xcbEventSource;
+    GSourceFuncs m_xcbEventSourceFuncs;
+    QEventLoop::ProcessEventsFlags m_flags;
+};
+
+class QXcbGlibEventDispatcherPrivate : public QEventDispatcherGlibPrivate
+{
+    Q_DECLARE_PUBLIC(QXcbGlibEventDispatcher)
+
+public:
+    QXcbGlibEventDispatcherPrivate();
+};
+
+#endif // QT_CONFIG(glib)
+
+class QXcbEventDispatcher
+{
+public:
+    static QAbstractEventDispatcher *createEventDispatcher(QXcbConnection *connection);
+};
+
+QT_END_NAMESPACE
+
+#endif // QXCBEVENTDISPATCHER_H