Long live Qt 4.5!

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diff --git a/src/corelib/io/qfilesystemwatcher_win_p.h b/src/corelib/io/qfilesystemwatcher_win_p.h
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+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (qt-info@nokia.com)
+**
+** This file is part of the QtCore module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** 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 1.0, 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.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at qt-sales@nokia.com.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QFILESYSTEMWATCHER_WIN_P_H
+#define QFILESYSTEMWATCHER_WIN_P_H
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists for the convenience
+// of the QLibrary class.  This header file may change from
+// version to version without notice, or even be removed.
+//
+// We mean it.
+//
+
+#include "qfilesystemwatcher_p.h"
+
+#ifndef QT_NO_FILESYSTEMWATCHER
+
+#include <windows.h>
+
+#include <QtCore/qdatetime.h>
+#include <QtCore/qfile.h>
+#include <QtCore/qfileinfo.h>
+#include <QtCore/qhash.h>
+#include <QtCore/qmutex.h>
+#include <QtCore/qvector.h>
+
+QT_BEGIN_NAMESPACE
+
+class QWindowsFileSystemWatcherEngine : public QFileSystemWatcherEngine
+{
+    Q_OBJECT
+
+public:
+    QWindowsFileSystemWatcherEngine();
+    ~QWindowsFileSystemWatcherEngine();
+
+    void run();
+
+    QStringList addPaths(const QStringList &paths, QStringList *files, QStringList *directories);
+    QStringList removePaths(const QStringList &paths, QStringList *files, QStringList *directories);
+
+    void stop();
+
+private:
+    void wakeup();
+
+    QMutex mutex;
+    QVector<HANDLE> handles;
+    int msg;
+
+    class Handle
+    {
+    public:
+        HANDLE handle;
+        uint flags;
+
+        Handle()
+            : handle(INVALID_HANDLE_VALUE), flags(0u)
+        { }
+        Handle(const Handle &other)
+            : handle(other.handle), flags(other.flags)
+        { }
+    };
+    QHash<QString, Handle> handleForDir;
+
+    class PathInfo {
+    public:
+        QString absolutePath;
+        QString path;
+        bool isDir;
+
+        // fileinfo bits
+        uint ownerId;
+        uint groupId;
+        QFile::Permissions permissions;
+        QDateTime lastModified;
+
+        PathInfo &operator=(const QFileInfo &fileInfo)
+        {
+            ownerId = fileInfo.ownerId();
+            groupId = fileInfo.groupId();
+            permissions = fileInfo.permissions();
+            lastModified = fileInfo.lastModified();
+            return *this;
+        }
+
+        bool operator!=(const QFileInfo &fileInfo) const
+        {
+            return (ownerId != fileInfo.ownerId()
+                    || groupId != fileInfo.groupId()
+                    || permissions != fileInfo.permissions()
+                    || lastModified != fileInfo.lastModified());
+        }
+    };
+    QHash<HANDLE, QHash<QString, PathInfo> > pathInfoForHandle;
+};
+#endif // QT_NO_FILESYSTEMWATCHER
+
+QT_END_NAMESPACE
+
+#endif // QFILESYSTEMWATCHER_WIN_P_H