110 lines
3.7 KiB
C++
110 lines
3.7 KiB
C++
/****************************************************************************
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**
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** Copyright (C) 2016 The Qt Company Ltd.
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** Contact: https://www.qt.io/licensing/
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**
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** This file is part of the QtWidgets module of the Qt Toolkit.
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**
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** $QT_BEGIN_LICENSE:LGPL$
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** Commercial License Usage
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** Licensees holding valid commercial Qt licenses may use this file in
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** accordance with the commercial license agreement provided with the
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** Software or, alternatively, in accordance with the terms contained in
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** a written agreement between you and The Qt Company. For licensing terms
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** and conditions see https://www.qt.io/terms-conditions. For further
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** information use the contact form at https://www.qt.io/contact-us.
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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 3 as published by the Free Software
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** Foundation and appearing in the file LICENSE.LGPL3 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 3 requirements
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** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
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**
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** GNU General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU
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** General Public License version 2.0 or (at your option) the GNU General
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** Public license version 3 or any later version approved by the KDE Free
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** Qt Foundation. The licenses are as published by the Free Software
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** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
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** included in the packaging of this file. Please review the following
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** information to ensure the GNU General Public License requirements will
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** be met: https://www.gnu.org/licenses/gpl-2.0.html and
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** https://www.gnu.org/licenses/gpl-3.0.html.
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**
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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#include "qstyleplugin.h"
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#include "qstyle.h"
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QT_BEGIN_NAMESPACE
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/*!
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\class QStylePlugin
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\brief The QStylePlugin class provides an abstract base for custom QStyle plugins.
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\ingroup plugins
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\inmodule QtWidgets
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QStylePlugin is a simple plugin interface that makes it easy
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to create custom styles that can be loaded dynamically into
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applications using the QStyleFactory class.
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Writing a style plugin is achieved by subclassing this base class,
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reimplementing the pure virtual create() function, and
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exporting the class using the Q_PLUGIN_METADATA() macro.
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\snippet qstyleplugin/main.cpp 0
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The json metadata file \c mystyleplugin.json for the plugin needs
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to contain information about the names of the styles the plugins
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supports as follows:
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\quotefile qstyleplugin/mystyleplugin.json
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See \l {How to Create Qt Plugins} for details.
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\sa QStyleFactory, QStyle
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*/
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/*!
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\fn QStyle *QStylePlugin::create(const QString& key)
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Creates and returns a QStyle object for the given style \a key.
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If a plugin cannot create a style, it should return 0 instead.
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The style key is usually the class name of the required
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style. Note that the keys are case insensitive. For example:
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\snippet qstyleplugin/main.cpp 1
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*/
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/*!
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Constructs a style plugin with the given \a parent.
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Note that this constructor is invoked automatically by the
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moc generated code that exports the plugin, so there is no need for calling it
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explicitly.
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*/
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QStylePlugin::QStylePlugin(QObject *parent)
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: QObject(parent)
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{
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}
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/*!
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Destroys the style plugin.
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Note that Qt destroys a plugin automatically when it is no longer
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used, so there is no need for calling the destructor explicitly.
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*/
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QStylePlugin::~QStylePlugin()
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{
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}
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QT_END_NAMESPACE
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#include "moc_qstyleplugin.cpp"
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