doc/src/snippets/code/doc_src_plugins-howto.qdoc
author eckhart.koppen@nokia.com
Wed, 31 Mar 2010 11:06:36 +0300
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/****************************************************************************
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**
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** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
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** All rights reserved.
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** Contact: Nokia Corporation (qt-info@nokia.com)
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**
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** This file is part of the documentation of the Qt Toolkit.
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**
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** $QT_BEGIN_LICENSE:LGPL$
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** No Commercial Usage
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** This file contains pre-release code and may not be distributed.
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** You may use this file in accordance with the terms and conditions
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** contained in the Technology Preview License Agreement accompanying
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** this package.
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**
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** GNU Lesser General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU Lesser
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** General Public License version 2.1 as published by the Free Software
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** Foundation and appearing in the file LICENSE.LGPL included in the
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** packaging of this file.  Please review the following information to
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** ensure the GNU Lesser General Public License version 2.1 requirements
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** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
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**
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** In addition, as a special exception, Nokia gives you certain additional
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** rights.  These rights are described in the Nokia Qt LGPL Exception
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** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
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**
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** If you have questions regarding the use of this file, please contact
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** Nokia at qt-info@nokia.com.
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**
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**
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**
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**
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**
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**
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**
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**
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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//! [0]
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class MyStylePlugin : public QStylePlugin
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{
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public:
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    QStringList keys() const;
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    QStyle *create(const QString &key);
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};
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//! [0]
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//! [1]
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#include "mystyleplugin.h"
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QStringList MyStylePlugin::keys() const
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{
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    return QStringList() << "MyStyle";
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}
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QStyle *MyStylePlugin::create(const QString &key)
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{
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    if (key.toLower() == "mystyle")
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        return new MyStyle;
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    return 0;
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}
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Q_EXPORT_PLUGIN2(pnp_mystyleplugin, MyStylePlugin)
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//! [1]
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//! [2]
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QApplication::setStyle(QStyleFactory::create("MyStyle"));
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//! [2]
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//! [3]
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CONFIG += release
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//! [3]
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//! [4]
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#include <QApplication>
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#include <QtPlugin>
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Q_IMPORT_PLUGIN(qjpeg)
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Q_IMPORT_PLUGIN(qgif)
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Q_IMPORT_PLUGIN(qkrcodecs)
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int main(int argc, char *argv[])
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{
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    QApplication app(argc, argv);
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    ...
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    return app.exec();
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}
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//! [4]
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//! [5]
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QTPLUGIN     += qjpeg \
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                qgif \
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                qkrcodecs
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//! [5]
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//! [6]
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HKEY_CURRENT_USER\Software\Trolltech\OrganizationDefaults\Qt Plugin Cache 4.2.debug
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HKEY_CURRENT_USER\Software\Trolltech\OrganizationDefaults\Qt Plugin Cache 4.2.false
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//! [6]