author | eckhart.koppen@nokia.com |
Wed, 31 Mar 2010 11:06:36 +0300 | |
changeset 7 | f7bc934e204c |
permissions | -rw-r--r-- |
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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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/*! |
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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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104 |
are opened in appropriate locations. |
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105 |
|
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106 |
The QDesktopWidget class can be used to monitor the positions of widgets and |
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107 |
notify applications about changes to the way the desktop is split over the |
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108 |
available screens. This enables applications to implement policies for |
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109 |
positioning new windows so that, for example, they do not distract a user |
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110 |
who is working on a specific task. |
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111 |
*/ |