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authorLars Knoll <lars.knoll@nokia.com>2009-03-23 09:18:55 (GMT)
committerSimon Hausmann <simon.hausmann@nokia.com>2009-03-23 09:18:55 (GMT)
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Long live Qt 4.5!
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+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (qt-info@nokia.com)
+**
+** This file is part of the documentation of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain
+** additional rights. These rights are described in the Nokia Qt LGPL
+** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this
+** package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at qt-sales@nokia.com.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+/*!
+ \group ipc
+ \title Inter-Process Communication in Qt
+ \ingroup groups
+ \ingroup architecture
+ \brief Inter-Process communication in Qt applications.
+
+ Qt provides several ways to implement Inter-Process Communication
+ (IPC) in Qt applications.
+
+ \section1 D-Bus
+
+ The \l{QtDBus} module is a Unix-only library
+ you can use to implement IPC using the D-Bus protocol. It extends
+ Qt's \l{signalsandslots.html} {Signals and Slots} mechanism to the
+ IPC level, allowing a signal emitted by one process to be
+ connected to a slot in another process. This \l {Introduction to
+ D-Bus} page has detailed information on how to use the \l{QtDBus}
+ module.
+
+ \section1 TCP/IP
+
+ The cross-platform \l{QtNetwork} module
+ provides classes that make network programming portable and
+ easy. It offers high-level classes (e.g., QHttp, QFtp) that
+ communicate using specific application-level protocols, and
+ lower-level classes (e.g., QTcpSocket, QTcpServer, QSslSocket) for
+ implementing protocols.
+
+ \section1 Shared Memory
+
+ The cross-platform shared memory class, QSharedMemory, provides
+ access to the operating system's shared memory implementation.
+ It allows safe access to shared memory segments by multiple threads
+ and processes. Additionally, QSystemSemaphore can be used to control
+ access to resources shared by the system, as well as to communicate
+ between processes.
+
+ \section1 Qt COmmunications Protocol (QCOP)
+
+ The QCopChannel class implements a protocol for transferring messages
+ between client processes across named channels. QCopChannel is
+ only available in \l{Qt for Embedded Linux}. Like the \l{QtDBus}
+ module, QCOP extends Qt's \l{Signals and Slots} mechanism to the
+ IPC level, allowing a signal emitted by one process to be
+ connected to a slot in another process, but unlike QtDBus, QCOP
+ does not depend on a third party library.
+
+*/
+