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diff --git a/3rdparty/qtsingleapplication/qtlockedfile.h b/3rdparty/qtsingleapplication/qtlockedfile.h
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+/****************************************************************************
+** 
+** Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+** 
+** This file is part of a Qt Solutions component.
+**
+** Commercial Usage  
+** Licensees holding valid Qt Commercial licenses may use this file in
+** accordance with the Qt Solutions Commercial License Agreement provided
+** with the Software or, alternatively, in accordance with the terms
+** contained in a written agreement between you and Nokia.
+** 
+** 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 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+** 
+** In addition, as a special exception, Nokia gives you certain
+** additional rights. These rights are described in the Nokia Qt 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.
+** 
+** Please note Third Party Software included with Qt Solutions may impose
+** additional restrictions and it is the user's responsibility to ensure
+** that they have met the licensing requirements of the GPL, LGPL, or Qt
+** Solutions Commercial license and the relevant license of the Third
+** Party Software they are using.
+** 
+** If you are unsure which license is appropriate for your use, please
+** contact Nokia at qt-info@nokia.com.
+** 
+****************************************************************************/
+
+#ifndef QTLOCKEDFILE_H
+#define QTLOCKEDFILE_H
+
+#include <QtCore/QFile>
+#ifdef Q_OS_WIN
+#include <QtCore/QVector>
+#endif
+
+#if defined(Q_WS_WIN)
+#  if !defined(QT_QTLOCKEDFILE_EXPORT) && !defined(QT_QTLOCKEDFILE_IMPORT)
+#    define QT_QTLOCKEDFILE_EXPORT
+#  elif defined(QT_QTLOCKEDFILE_IMPORT)
+#    if defined(QT_QTLOCKEDFILE_EXPORT)
+#      undef QT_QTLOCKEDFILE_EXPORT
+#    endif
+#    define QT_QTLOCKEDFILE_EXPORT __declspec(dllimport)
+#  elif defined(QT_QTLOCKEDFILE_EXPORT)
+#    undef QT_QTLOCKEDFILE_EXPORT
+#    define QT_QTLOCKEDFILE_EXPORT __declspec(dllexport)
+#  endif
+#else
+#  define QT_QTLOCKEDFILE_EXPORT
+#endif
+
+class QT_QTLOCKEDFILE_EXPORT QtLockedFile : public QFile
+{
+public:
+    enum LockMode { NoLock = 0, ReadLock, WriteLock };
+
+    QtLockedFile();
+    QtLockedFile(const QString &name);
+    ~QtLockedFile();
+
+    bool open(OpenMode mode);
+
+    bool lock(LockMode mode, bool block = true);
+    bool unlock();
+    bool isLocked() const;
+    LockMode lockMode() const;
+
+private:
+#ifdef Q_OS_WIN
+    Qt::HANDLE wmutex;
+    Qt::HANDLE rmutex;
+    QVector<Qt::HANDLE> rmutexes;
+    QString mutexname;
+
+    Qt::HANDLE getMutexHandle(int idx, bool doCreate);
+    bool waitMutex(Qt::HANDLE mutex, bool doBlock);
+
+#endif
+    LockMode m_lock_mode;
+};
+
+#endif