text: /****************************************************************************
  **
  ** Copyright (C) 2015 The Qt Company Ltd.
  ** Contact: http://www.qt.io/licensing/
  **
  ** This file is part of the QtGui 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 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.
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  ** rights. These rights are described in The Qt Company 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
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  ** $QT_END_LICENSE$
  **
  ****************************************************************************/
  
  #ifndef QSTYLEPLUGIN_H
  #define QSTYLEPLUGIN_H
  
  #include <QtCore/qplugin.h>
  #include <QtCore/qfactoryinterface.h>
  
  QT_BEGIN_HEADER
  
  QT_BEGIN_NAMESPACE
  
  QT_MODULE(Gui)
  
  class QStyle;
  
  struct Q_GUI_EXPORT QStyleFactoryInterface : public QFactoryInterface
  {
      virtual QStyle *create(const QString &key) = 0;
  };
  
  #define QStyleFactoryInterface_iid "com.trolltech.Qt.QStyleFactoryInterface"
  
  Q_DECLARE_INTERFACE(QStyleFactoryInterface, QStyleFactoryInterface_iid)
  
  class Q_GUI_EXPORT QStylePlugin : public QObject, public QStyleFactoryInterface
  {
      Q_OBJECT
      Q_INTERFACES(QStyleFactoryInterface:QFactoryInterface)
  public:
      explicit QStylePlugin(QObject *parent = 0);
      ~QStylePlugin();
  
      virtual QStringList keys() const = 0;
      virtual QStyle *create(const QString &key) = 0;
  };
  
  QT_END_NAMESPACE
  
  QT_END_HEADER
  
  #endif // QSTYLEPLUGIN_H
  