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+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Nokia Corporation (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
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+**
+** 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
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+**
+****************************************************************************/
+
+/*!
+    \page qt-embedded-charinput.html
+
+    \title Qt for Embedded Linux Character Input
+    \ingroup qt-embedded-linux
+
+    When running a \l {Qt for Embedded Linux} application, it either runs as a
+    server or connects to an existing server.  The keyboard driver is
+    loaded by the server application when it starts running, using
+    Qt's \l {How to Create Qt Plugins}{plugin system}.
+
+    Internally in the client/server protocol, all system generated
+    events, including key events, are passed to the server application
+    which then propagates the event to the appropriate client.  Note
+    that key events do not always come from a keyboard device, they
+    can can also be generated by the server process using input
+    widgets.
+
+    \table
+    \header \o Input Widgets
+    \row
+    \o
+
+    The server process may call the static QWSServer::sendKeyEvent()
+    function at any time. Typically, this is done by popping up a
+    widget that enables the user specify characters with the pointer
+    device.
+
+    Note that the key input widget should not take focus since the
+    server would then just send the key events back to the input
+    widget. One way to make sure that the input widget never takes
+    focus is to set the Qt::Tool widget flag in the QWidget
+    constructor.
+
+    The \l{Qt Extended} environment contains various input widgets such as
+    Handwriting Recognition and Virtual Keyboard.
+
+    \endtable
+
+    \tableofcontents
+
+    \section1 Available Keyboard Drivers
+
+    \l {Qt for Embedded Linux} provides ready-made drivers for the console
+    (TTY) and the standard Linux Input Subsystem (USB, PS/2, ...).  Run the
+    \c configure script to list the available drivers:
+
+    \snippet doc/src/snippets/code/doc_src_emb-charinput.qdoc 0
+
+    Note that only the console (TTY) keyboard driver handles console
+    switching (\bold{Ctrl+Alt+F1}, ..., \bold{Ctrl+Alt+F10}) and
+    termination (\bold{Ctrl+Alt+Backspace}).
+
+    In the default Qt configuration, only the "TTY" driver is
+    enabled. The various drivers can be enabled and disabled using the
+    \c configure script. For example:
+
+    \snippet doc/src/snippets/code/doc_src_emb-charinput.qdoc 1
+
+    Custom keyboard drivers can be implemented by subclassing the
+    QWSKeyboardHandler class and creating a keyboard driver plugin
+    (derived from the QKbdDriverPlugin class). The default
+    implementation of the QKbdDriverFactory class will automatically
+    detect the plugin, loading the driver into the server application
+    at run-time.
+
+    \section1 Keymaps
+
+    Starting with 4.6, \l {Qt for Embedded Linux} has gained support for
+    user defined keymaps.  Keymap handling is supported by the built-in
+    keyboard drivers \c TTY and \c LinuxInput.  Custom keyboard drivers can
+    use the existing keymap handling code via
+    QWSKeyboardHandler::processKeycode().
+
+    By default Qt will use an internal, compiled-in US keymap.
+    See the options below for how to load a different keymap.
+
+    \section1 Specifying a Keyboard Driver
+
+    To specify which driver to use, set the QWS_KEYBOARD environment
+    variable. For example (if the current shell is bash, ksh, zsh or
+    sh):
+
+    \snippet doc/src/snippets/code/doc_src_emb-charinput.qdoc 2
+
+    The \c <driver> arguments are \c TTY, \c LinuxInput and \l
+    {QKbdDriverPlugin::keys()}{keys} identifying custom drivers, and the
+    driver specific options are typically a device, e.g., \c /dev/tty0.
+
+    Multiple keyboard drivers can be specified in one go:
+
+    \snippet doc/src/snippets/code/doc_src_emb-charinput.qdoc 3
+
+    Input will be read from all specified drivers.
+
+    Currently the following options are supported by both the \c TTY and \c
+    LinuxInput driver:
+
+    \table
+    \header \o Option \o Description
+    \row \o \c /dev/xxx \o
+    Open the specified device, instead of the driver's default device.
+    \row \o \c repeat-delay=<d> \o
+    Time (in milliseconds) until auto-repeat kicks in.
+    \row \o \c repeat-rate=<r> \o
+    Time (in milliseconds) specifying the interval between auto-repeats.
+    \row \o \c keymap=xx.qmap \o
+    File name of a keymap file in Qt's \c qmap format. See \l {kmap2qmap}
+    for instructions on how to create thoes files.\br Note that the file
+    name can of course also be the name of a QResource.
+    \row \o \c disable-zap \o
+    Disable the QWS server "Zap" shortcut \bold{Ctrl+Alt+Backspace}
+    \row \o \c enable-compose \o
+    Activate Latin-1 composing features in the built-in US keymap. You can
+    use the right \c AltGr or right \c Alt is used as a dead key modifier,
+    while \c AltGr+.  is the compose key.  For example:
+    \list
+    \o \c AltGr + \c " + \c u = \uuml (u with diaeresis / umlaut u)
+    \o \c AltGr + \c . + \c / + \c o = \oslash (slashed o)
+    \endlist
+    \endtable
+
+*/