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diff --git a/doc/src/platforms/emb-running.qdoc b/doc/src/platforms/emb-running.qdoc new file mode 100644 index 0000000..67c9283 --- /dev/null +++ b/doc/src/platforms/emb-running.qdoc @@ -0,0 +1,210 @@ +/**************************************************************************** +** +** 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 Technology Preview License Agreement accompanying +** this package. +** +** 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 1.1, included in the file LGPL_EXCEPTION.txt in this +** package. +** +** If you have questions regarding the use of this file, please contact +** Nokia at qt-info@nokia.com. +** +** +** +** +** +** +** +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +/*! + \page qt-embedded-running.html + + \title Running Qt for Embedded Linux Applications + \ingroup qt-embedded-linux + + A \l{Qt for Embedded Linux} application requires a server application to be + running, or to be the server application itself. Any \l{Qt for Embedded Linux} + application can be the server application by constructing the QApplication + object with the QApplication::GuiServer type, or by running the application + with the \c -qws command line option. + + Applications can run using both single and multiple displays, and + various command line options are available. + + Note that this document assumes that you either are using the + \l{The Virtual Framebuffer} or that you are running \l{Qt for Embedded Linux} + using the \l {The VNC Protocol and Qt for Embedded Linux}{VNC} protocol, + \e or that you have the Linux framebuffer configured + correctly and that no server process is running. (To test that the + Linux framebuffer is set up correctly, use the program provided by + the \l {Testing the Linux Framebuffer} document.) + + \tableofcontents + + \section1 Using a Single Display + + To run the application using a single display, change to a Linux + console and select an application to run, e.g. \l {Text + Edit}{demos/textedit}. Run the application with the \c -qws + option: + + \snippet doc/src/snippets/code/doc_src_emb-running.qdoc 0 + + \table 100% + \row + \o + Provided that the environment variables are adjusted properly + during the \l {Installing Qt for Embedded Linux}{installation process}, you + should see the \l {Text Edit} demo appear. + + It might be that the hardware drivers must be specified explicitly + to make everything work properly. For more information, please + consult the following documentation: + + \list + \o \l{Qt for Embedded Linux Pointer Handling}{Pointer Handling} + \o \l{Qt for Embedded Linux Character Input}{Character Input} + \o \l{Qt for Embedded Linux Display Management}{Display Management} + \endlist + + \o + \inlineimage qt-embedded-runningapplication.png + \endtable + + Additional applications can be run as clients, i.e., by running + these applications \e without the \c -qws option they will connect + to the existing server as clients. You can exit the server + application at any time using \gui{Ctrl+Alt+Backspace}. + + \section1 Using Multiple Displays + + Qt for Embedded Linux also allows multiple displays to be used + simultaneously. There are two ways of achieving this: Either run + multiple Qt for Embedded Linux server processes, or use the + ready-made \c Multi screen driver. + + When running multiple server processes, the screen driver (and + display number) must be specified for each process using the \c + -display command line option or by setting the QWS_DISPLAY + environment variable. For example: + + \snippet doc/src/snippets/code/doc_src_emb-running.qdoc 1 + + See the \l {Qt for Embedded Linux Display Management}{display management} + documentation for more details on how to specify a screen + driver. Note that you must also specify the display (i.e., server + process) when starting client applications: + + \snippet doc/src/snippets/code/doc_src_emb-running.qdoc 2 + + There is no way of moving a client from one display to another + when running multiple server processes. Using the \c Multi screen + driver, on the other hand, applications can easiliy be moved + between the various screens. + + The \c Multi screen driver can be specified just like any other + screen driver by using the \c -display command line option or by + setting the QWS_DISPLAY environment variable. For example: + + \snippet doc/src/snippets/code/doc_src_emb-running.qdoc 3 + + See the \l {Qt for Embedded Linux Display Management}{display management} + documentation for details regarding arguments. + + \section1 Command Line Options + + \table 100% + \header + \o Option \o Description + \row + \o \bold -fn <font> + \o + Defines the application font. For example: + \snippet doc/src/snippets/code/doc_src_emb-running.qdoc 4 + The font should be specified using an X logical font description. + \row + \o \bold -bg <color> + \o + Sets the default application background color. For example: + \snippet doc/src/snippets/code/doc_src_emb-running.qdoc 5 + The color-name must be one of the names recognized by the QColor constructor. + \row + \o \bold -btn <color> \o + Sets the default button color. For example: + \snippet doc/src/snippets/code/doc_src_emb-running.qdoc 6 + The color-name must be one of the names recognized by the QColor constructor. + \row + \o \bold -fg <color> \o + Sets the default application foreground color. For example: + \snippet doc/src/snippets/code/doc_src_emb-running.qdoc 7 + The color-name must be one of the names recognized by the QColor constructor. + \row + \o \bold -name <objectname> \o + Sets the application name, i.e. the application object's object name. For example: + \snippet doc/src/snippets/code/doc_src_emb-running.qdoc 8 + \row + \o \bold -title <title> \o + Sets the application's title. For example: + \snippet doc/src/snippets/code/doc_src_emb-running.qdoc 9 + \row + \o \bold -geometry <width>x<height>+<Xoffset>+<Yoffset> \o + Sets the client geometry of the first window that is shown. For example: + \snippet doc/src/snippets/code/doc_src_emb-running.qdoc 10 + \row + \o \bold -keyboard \o + Enables the keyboard. + + See also: \l {Qt for Embedded Linux Character Input}. + \row + \o \bold -nokeyboard \o + Disables the keyboard. + \row + \o \bold -mouse \o + Enables the mouse cursor. + + See also: \l {Qt for Embedded Linux Pointer Handling}. + \row + \o \bold -nomouse \o + Disables the mouse cursor. + \row + \o \bold -qws \o + Runs the application as a server application, i.e. constructs a + QApplication object of the QApplication::GuiServer type. + \row + \o \bold -display \o + Specifies the screen driver. + + See also: \l {Qt for Embedded Linux Display Management}. + \row + \o \bold -decoration <style>\o + Sets the application decoration. For example: + \snippet doc/src/snippets/code/doc_src_emb-running.qdoc 11 + The supported styles are \c windows, \c default and \c styled. + + See also QDecoration. + + \endtable +*/ |