doc/src/frameworks-technologies/desktop-integration.qdoc
author Eckhart Koeppen <eckhart.koppen@nokia.com>
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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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/*!
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    \group desktop
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    \title Desktop Integration Classes
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*/
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/*!
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    \page desktop-integration.html
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    \title Desktop Integration
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    \brief Integrating with the user's desktop environment.
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    \ingroup best-practices
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    Qt applications behave well in the user's desktop environment, but certain
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    integrations require additional, and sometimes platform specific, techniques.
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    \tableofcontents
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    \section1 Useful Classes
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    Various classes in Qt are designed to help developers integrate applications into
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    users' desktop environments. These classes enable developers to take advantage
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    of native services while still using a cross-platform API.
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    \annotatedlist desktop
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    \section1 Setting the Application Icon
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    In order to change the icon of the executable application file
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    itself, as it is presented on the desktop (i.e., prior to
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    application execution), it is necessary to employ another,
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    platform-dependent technique.
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    \tableofcontents {1 Setting the Application Icon}
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    \section1 Opening External Resources
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    Although Qt provides facilities to handle and display resources, such as
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    \l{QImageIOHandler}{common image formats} and \l{QTextDocument}{HTML},
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    it is sometimes necessary to open files and external resources using external
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    applications.
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    QDesktopServices provides an interface to services offered by the user's desktop
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    environment. In particular, the \l{QDesktopServices::}{openUrl()} function is
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    used to open resources using the appropriate application, which may have been
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    specifically configured by the user.
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    \section1 System Tray Icons
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    Many modern desktop environments feature docks or panels with \e{system trays}
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    in which applications can install icons. Applications often use system tray icons
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    to display status information, either by updating the icon itself or by showing
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    information in "balloon messages". Additionally, many applications provide
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    pop-up menus that can be accessed via their system tray icons.
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    The QSystemTrayIcon class exposes all of the above features via an intuitive
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    Qt-style API that can be used on all desktop platforms.
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    \section1 Desktop Widgets
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    On systems where the user's desktop is displayed using more than one screen,
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    certain types of applications may need to obtain information about the
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    configuration of the user's workspace to ensure that new windows and dialogs
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    are opened in appropriate locations.
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    The QDesktopWidget class can be used to monitor the positions of widgets and
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    notify applications about changes to the way the desktop is split over the
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    available screens. This enables applications to implement policies for
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    positioning new windows so that, for example, they do not distract a user
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    who is working on a specific task.
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*/