| 1 | /**************************************************************************** | 
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| 2 | ** | 
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| 3 | ** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies). | 
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| 4 | ** Contact: Qt Software Information (qt-info@nokia.com) | 
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| 5 | ** | 
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| 6 | ** This file is part of the documentation of the Qt Toolkit. | 
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| 7 | ** | 
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| 8 | ** $QT_BEGIN_LICENSE:LGPL$ | 
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| 9 | ** Commercial Usage | 
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| 10 | ** Licensees holding valid Qt Commercial licenses may use this file in | 
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| 11 | ** accordance with the Qt Commercial License Agreement provided with the | 
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| 12 | ** Software or, alternatively, in accordance with the terms contained in | 
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| 13 | ** a written agreement between you and Nokia. | 
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| 14 | ** | 
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| 15 | ** GNU Lesser General Public License Usage | 
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| 16 | ** Alternatively, this file may be used under the terms of the GNU Lesser | 
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| 17 | ** General Public License version 2.1 as published by the Free Software | 
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| 18 | ** Foundation and appearing in the file LICENSE.LGPL included in the | 
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| 19 | ** packaging of this file.  Please review the following information to | 
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| 20 | ** ensure the GNU Lesser General Public License version 2.1 requirements | 
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| 21 | ** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. | 
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| 22 | ** | 
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| 23 | ** In addition, as a special exception, Nokia gives you certain | 
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| 24 | ** additional rights. These rights are described in the Nokia Qt LGPL | 
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| 25 | ** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this | 
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| 26 | ** package. | 
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| 27 | ** | 
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| 28 | ** GNU General Public License Usage | 
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| 29 | ** Alternatively, this file may be used under the terms of the GNU | 
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| 30 | ** General Public License version 3.0 as published by the Free Software | 
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| 31 | ** Foundation and appearing in the file LICENSE.GPL included in the | 
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| 32 | ** packaging of this file.  Please review the following information to | 
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| 33 | ** ensure the GNU General Public License version 3.0 requirements will be | 
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| 34 | ** met: http://www.gnu.org/copyleft/gpl.html. | 
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| 35 | ** | 
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| 36 | ** If you are unsure which license is appropriate for your use, please | 
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| 37 | ** contact the sales department at qt-sales@nokia.com. | 
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| 38 | ** $QT_END_LICENSE$ | 
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| 39 | ** | 
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| 40 | ****************************************************************************/ | 
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| 41 |  | 
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| 42 | /*! | 
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| 43 | \page desktop-integration.html | 
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| 44 | \title Desktop Integration | 
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| 45 | \ingroup gui-programming | 
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| 46 |  | 
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| 47 | Various classes in Qt are designed to help developers integrate applications into | 
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| 48 | users' desktop environments. These classes enable developers to take advantage | 
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| 49 | of native services while still using a cross-platform API. | 
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| 50 |  | 
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| 51 | \tableofcontents | 
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| 52 |  | 
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| 53 | \section1 Opening External Resources | 
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| 54 |  | 
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| 55 | Although Qt provides facilities to handle and display resources, such as | 
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| 56 | \l{QImageIOHandler}{common image formats} and \l{QTextDocument}{HTML}, | 
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| 57 | it is sometimes necessary to open files and external resources using external | 
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| 58 | applications. | 
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| 59 |  | 
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| 60 | QDesktopServices provides an interface to services offered by the user's desktop | 
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| 61 | environment. In particular, the \l{QDesktopServices::}{openUrl()} function is | 
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| 62 | used to open resources using the appropriate application, which may have been | 
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| 63 | specifically configured by the user. | 
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| 64 |  | 
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| 65 | \section1 System Tray Icons | 
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| 66 |  | 
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| 67 | Many modern desktop environments feature docks or panels with \e{system trays} | 
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| 68 | in which applications can install icons. Applications often use system tray icons | 
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| 69 | to display status information, either by updating the icon itself or by showing | 
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| 70 | information in "balloon messages". Additionally, many applications provide | 
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| 71 | pop-up menus that can be accessed via their system tray icons. | 
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| 72 |  | 
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| 73 | The QSystemTrayIcon class exposes all of the above features via an intuitive | 
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| 74 | Qt-style API that can be used on all desktop platforms. | 
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| 75 |  | 
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| 76 | \section1 Desktop Widgets | 
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| 77 |  | 
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| 78 | On systems where the user's desktop is displayed using more than one screen, | 
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| 79 | certain types of applications may need to obtain information about the | 
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| 80 | configuration of the user's workspace to ensure that new windows and dialogs | 
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| 81 | are opened in appropriate locations. | 
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| 82 |  | 
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| 83 | The QDesktopWidget class can be used to monitor the positions of widgets and | 
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| 84 | notify applications about changes to the way the desktop is split over the | 
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| 85 | available screens. This enables applications to implement policies for | 
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| 86 | positioning new windows so that, for example, they do not distract a user | 
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| 87 | who is working on a specific task. | 
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| 88 |  | 
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| 89 |  | 
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| 90 | */ | 
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