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/****************************************************************************
**
** Copyright (C) 2015 The Qt Company Ltd and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
**
** This file is part of the QtSystems module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL21$
** 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.
**
** $QT_END_LICENSE$
**
****************************************************************************/

#include "qscreensaver_win_p.h"

#include <QtCore/qsettings.h>

#include <windows.h>

QT_BEGIN_NAMESPACE

Q_GLOBAL_STATIC_WITH_ARGS(const QString, REGISTRY_DESKTOP_PATH, (QLatin1String("HKEY_CURRENT_USER\\Control Panel\\Desktop")))
Q_GLOBAL_STATIC_WITH_ARGS(const QString, REGISTRY_SCREENSAVER_KEY, (QLatin1String("SCRNSAVE.EXE")))

QScreenSaverPrivate::QScreenSaverPrivate(QScreenSaver *parent)
    : q_ptr(parent)
{
}

bool QScreenSaverPrivate::screenSaverEnabled()
{
    // Work-around for http://support.microsoft.com/kb/318781
    QSettings screenSaverSetting(*REGISTRY_DESKTOP_PATH(), QSettings::NativeFormat);
    return !screenSaverSetting.value(*REGISTRY_SCREENSAVER_KEY()).isNull();
}

void QScreenSaverPrivate::setScreenSaverEnabled(bool enabled)
{
    SystemParametersInfo(SPI_SETSCREENSAVEACTIVE, enabled, 0, SPIF_SENDWININICHANGE);
}

QT_END_NAMESPACE