| 1 | /****************************************************************************
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| 2 | **
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| 3 | ** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
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| 4 | ** All rights reserved.
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| 5 | ** Contact: Nokia Corporation (qt-info@nokia.com)
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| 6 | **
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| 7 | ** This file is part of the documentation of the Qt Toolkit.
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| 8 | **
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| 9 | ** $QT_BEGIN_LICENSE:FDL$
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| 10 | ** Commercial Usage
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| 11 | ** Licensees holding valid Qt Commercial licenses may use this file in
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| 12 | ** accordance with the Qt Commercial License Agreement provided with the
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| 13 | ** Software or, alternatively, in accordance with the terms contained in a
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| 14 | ** written agreement between you and Nokia.
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| 15 | **
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| 16 | ** GNU Free Documentation License
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| 17 | ** Alternatively, this file may be used under the terms of the GNU Free
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| 18 | ** Documentation License version 1.3 as published by the Free Software
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| 19 | ** Foundation and appearing in the file included in the packaging of this
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| 20 | ** file.
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| 21 | **
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| 22 | ** If you have questions regarding the use of this file, please contact
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| 23 | ** Nokia at qt-info@nokia.com.
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| 24 | ** $QT_END_LICENSE$
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| 25 | **
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| 26 | ****************************************************************************/
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| 27 |
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| 28 | /*!
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| 29 | \page desktop-integration.html
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| 30 | \title Desktop Integration
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| 31 | \brief Integrating with the user's desktop environment.
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| 32 |
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| 33 | \ingroup best-practices
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| 34 | \ingroup qt-gui-concepts
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| 35 |
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| 36 | Qt applications behave well in the user's desktop environment, but certain
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| 37 | integrations require additional, and sometimes platform specific, techniques.
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| 38 |
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| 39 | \tableofcontents
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| 40 |
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| 41 | \section1 Useful Classes
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| 42 |
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| 43 | Various classes in Qt are designed to help developers integrate applications into
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| 44 | users' desktop environments. These classes enable developers to take advantage
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| 45 | of native services while still using a cross-platform API.
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| 46 |
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| 47 | \annotatedlist desktop
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| 48 |
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| 49 | \section1 Setting the Application Icon
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| 50 |
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| 51 | In order to change the icon of the executable application file
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| 52 | itself, as it is presented on the desktop (i.e., prior to
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| 53 | application execution), it is necessary to employ another,
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| 54 | platform-dependent technique.
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| 55 |
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| 56 | \tableofcontents {1 Setting the Application Icon}
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| 57 |
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| 58 | \section1 Opening External Resources
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| 59 |
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| 60 | Although Qt provides facilities to handle and display resources, such as
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| 61 | \l{QImageIOHandler}{common image formats} and \l{QTextDocument}{HTML},
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| 62 | it is sometimes necessary to open files and external resources using external
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| 63 | applications.
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| 64 |
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| 65 | QDesktopServices provides an interface to services offered by the user's desktop
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| 66 | environment. In particular, the \l{QDesktopServices::}{openUrl()} function is
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| 67 | used to open resources using the appropriate application, which may have been
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| 68 | specifically configured by the user.
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| 69 |
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| 70 | \section1 System Tray Icons
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| 71 |
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| 72 | Many modern desktop environments feature docks or panels with \e{system trays}
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| 73 | in which applications can install icons. Applications often use system tray icons
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| 74 | to display status information, either by updating the icon itself or by showing
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| 75 | information in "balloon messages". Additionally, many applications provide
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| 76 | pop-up menus that can be accessed via their system tray icons.
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| 77 |
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| 78 | The QSystemTrayIcon class exposes all of the above features via an intuitive
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| 79 | Qt-style API that can be used on all desktop platforms.
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| 80 |
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| 81 | \section1 Desktop Widgets
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| 82 |
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| 83 | On systems where the user's desktop is displayed using more than one screen,
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| 84 | certain types of applications may need to obtain information about the
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| 85 | configuration of the user's workspace to ensure that new windows and dialogs
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| 86 | are opened in appropriate locations.
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| 87 |
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| 88 | The QDesktopWidget class can be used to monitor the positions of widgets and
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| 89 | notify applications about changes to the way the desktop is split over the
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| 90 | available screens. This enables applications to implement policies for
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| 91 | positioning new windows so that, for example, they do not distract a user
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| 92 | who is working on a specific task.
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| 93 | */
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