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authorTimothy Pearson <kb9vqf@pearsoncomputing.net>2011-07-10 15:24:15 -0500
committerTimothy Pearson <kb9vqf@pearsoncomputing.net>2011-07-10 15:24:15 -0500
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+/****************************************************************************
+**
+** Miscellaneous documentation that doesn't fit anywhere else
+**
+** Copyright (C) 1992-2008 Trolltech ASA. All rights reserved.
+**
+** This file is part of the Qt GUI Toolkit.
+**
+** This file may be used under the terms of the GNU General
+** Public License versions 2.0 or 3.0 as published by the Free
+** Software Foundation and appearing in the files LICENSE.GPL2
+** and LICENSE.GPL3 included in the packaging of this file.
+** Alternatively you may (at your option) use any later version
+** of the GNU General Public License if such license has been
+** publicly approved by Trolltech ASA (or its successors, if any)
+** and the KDE Free Qt Foundation.
+**
+** Please review the following information to ensure GNU General
+** Public Licensing requirements will be met:
+** http://trolltech.com/products/qt/licenses/licensing/opensource/.
+** If you are unsure which license is appropriate for your use, please
+** review the following information:
+** http://trolltech.com/products/qt/licenses/licensing/licensingoverview
+** or contact the sales department at sales@trolltech.com.
+**
+** This file may be used under the terms of the Q Public License as
+** defined by Trolltech ASA and appearing in the file LICENSE.QPL
+** included in the packaging of this file. Licensees holding valid Qt
+** Commercial licenses may use this file in accordance with the Qt
+** Commercial License Agreement provided with the Software.
+**
+** This file is provided "AS IS" with NO WARRANTY OF ANY KIND,
+** INCLUDING THE WARRANTIES OF DESIGN, MERCHANTABILITY AND FITNESS FOR
+** A PARTICULAR PURPOSE. Trolltech reserves all rights not granted
+** herein.
+**
+**********************************************************************/
+
+
+/*! \page commonproblems.html
+\title Brief Technical FAQ
+
+
+This document describes how to use more than one Qt version on one
+machine and how to use Qt on X11 without a window manager. In addition
+it explains the most common source of link errors with Qt.
+
+Other frequently asked questions can be found in the
+\link http://www.trolltech.com/developer/faqs/ FAQ index\endlink and
+in the \link http://www.trolltech.com/developer/faqs/technical.html Technical FAQ\endlink.
+
+\list
+\i \link #linkerror Link error, complaining about a lack of
+<tt>vtbl</tt>, <tt>_vtbl</tt>, <tt>__vtbl</tt> or similar\endlink
+\i \link #diffver Using different versions of Qt on the same
+machine\endlink
+ \list
+ \i \link #qtbin Developers building for a single version of Qt on Unix - Qt binary packages\endlink
+ \i \link #qtsrc Developers building for two versions of Qt on Unix - Qt sources\endlink
+ \endlist
+\i \link #nowinman Using Qt on X11 without a window manager\endlink
+\i \link distributingqt.html Distributing Qt Applications\endlink
+\endlist
+
+\target linkerror
+\section1 Link error, complaining about a lack of \c vtbl, \c _vtbl, \c __vtbl or similar
+
+This indicates that you've included the Q_OBJECT macro in a class
+declaration and probably also run the moc, but forgot to link the
+moc-generated object code into your executable. See \link moc.html
+Using the Meta Object Compiler\endlink for details on how to use moc.
+
+\target diffver
+\section1 Using different versions of Qt on the same machine
+
+Qt programs need the following components of a Qt distribution:
+
+<dl>
+
+<dt>Header files - Compile time
+
+<dd>Programmers need to include the Qt header files. The Qt header files
+are usually located in the \c include subdirectory of Qt distributions.
+Care must be taken to include the header files of the relevant release of
+Qt. Those with a command-line compiler will typically use options such as
+\c{/I%QTDIR%\include} or \c{-I"$QTDIR"/include} provided \c QTDIR specifies
+the relevant release of Qt.
+
+<dt>Meta Object Compiler and other tools - Compile time
+
+<dd>Programmers need to run \e moc and other tools such as \e uic. These
+tools are usually located in the \c bin subdirectory of Qt distributions.
+Either run \c "$QTDIR"/bin/moc and \c "$QTDIR"/bin/uic or add \c "$QTDIR"/bin
+to your \c PATH and run \c moc and \c uic. If you use \c qmake the
+appropriate lines will be added to your Makefiles so that \e uic and
+\e moc will be executed as required.
+
+<dt>Static or shared libraries - Link time
+
+<dd>Programmers need to link with the Qt static or shared libraries. The Qt
+libraries are usually located in the \c lib subdirectory of Qt distributions.
+Care must be taken to link with the libraries of the relevant release of
+Qt. Those with a command-line compiler will typically use options such as
+\c{/L%QTDIR%\lib\qt.lib} or \c{-L"$QTDIR"/lib} \c -lqt provided \c QTDIR
+specifies the relevant release of Qt.
+
+<dt>Shared libraries - Run time
+
+<dd>Users of programs linked with shared Qt libraries need these same
+shared libraries to run these programs. The Qt libraries are usually
+located in the \c lib subdirectory of Qt distributions. Shared libraries
+are made available to programs in places such as \c{C:\windows\system} on
+Windows platforms, directories listed in file \c /etc/ld.so.conf on Linux,
+standard \c lib directories on Unix, or directories listed in environment
+variables \c LD_LIBRARY_PATH, \c SHLIB_PATH, or \c LIBPATH on various Unix
+flavours. Make the relevant Qt libraries available using one of these
+mechanisms.
+
+</dl>
+
+Qt distributions consist of different files needed at compile time,
+link time, or run time. Trolltech distributes Qt in the form of a
+source package that contain all these files once they have been built.
+
+Other vendors distribute Qt in the form of binary packages. Binary packages
+usually consist of two parts:
+
+\list
+\i shared libraries in the run time package, usually called \c qt3.
+
+\i header files, static libraries, the moc and other tools in the developers'
+kit, usually called \c qt3-dev.
+
+\endlist
+
+Depending on how you are using Qt, you need to make specific parts of
+the Qt distribution available to your programs. Typical situations are
+described below.
+
+\target qtbin
+\section2 Developers building for a single version of Qt on Unix - Qt binary packages
+
+You build programs with a single version of Qt, but you still need
+to run programs linked with another version of Qt. You are typically
+a Linux developer who builds programs for Qt 3.x on a KDE desktop based
+on Qt 2.x. Qt packages are usually split into a shared library
+package with a name like \c qt and a developer package with a name
+like \c qt-dev. You will need the appropriate packages:
+
+\list
+
+\i To build programs you will need the header files, the libraries,
+the moc and other tools from Qt 3.x. They are included in the developer
+package of Qt 3.x (\c qt3-dev or similar).
+
+\i To run programs you will need the shared libraries of Qt 3.x and
+Qt 2.x. They are included in the regular packages of Qt 3.x (\c qt3
+or similar) and Qt 2.x (\c qt2 or similar).
+
+\endlist
+
+Just install the packages, \c qt2, \c qt3, and \c qt3-dev. You may
+need to set the environment variable \c QTDIR to point to Qt 3.x.
+
+\target qtsrc
+\section2 Developers building for two versions of Qt on Unix - Qt sources
+
+You build and run programs for Qt 2.x and Qt 3.x. You will need:
+
+\list
+
+\i the header files, the libraries, the moc and other tools from Qt 3.x
+and Qt 2.x to build programs,
+
+\i the shared libraries of Qt 3.x and Qt 2.x to run programs.
+
+\endlist
+
+Get the source distributions of both Qt 2.x and Qt 3.x.
+
+\list 1
+
+\i Install and build Qt 2.x and Qt 3.x, usually in \c /opt or
+\c /usr/local. In the case of \c /opt:
+
+\code
+$ cd /opt
+$ gunzip -c \c qt-x11-2.3.1.tar.gz | tar xf -
+$ cd qt-2.3.1
+$ setenv QTDIR /opt/qt-2.3.1
+$ configure [options]
+$ make
+
+$ cd /opt
+$ gunzip -c qt-x11-free-3.0.0.tar.gz | tar xf -
+$ cd qt-3.0.0
+$ setenv QTDIR /opt/qt-3.0.0
+$ configure [options]
+$ make
+\endcode
+
+\i Make shared libraries available to programs at run time. Either
+add both \c /opt/qt-2.3.1/lib and \c /opt/qt-3.0.0/lib to your environment
+variable \c LD_LIBRARY_PATH or file \c /etc/ld.so.conf or whataver mechanism
+you're using, or make links to the libraries in a standard directory like
+\c /usr/local/lib:
+
+\code
+cd /usr/local/lib
+ln -s /opt/qt-2.3.1/lib/libqt.so.2 .
+ln -s /opt/qt-2.3.1/lib/libqt-mt.so.2 .
+ln -s /opt/qt-2.3.1/lib/libqutil.so.1 .
+ln -s /opt/qt-3.0.0/lib/libqt.so.3 .
+ln -s /opt/qt-3.0.0/lib/libqui.so.1 .
+\endcode
+
+\endlist
+
+To develop with Qt 2.x use:
+
+\code
+setenv QTDIR /opt/qt-2.3.1
+setenv PATH ${QTDIR}/bin:${PATH}
+\endcode
+
+To develop with Qt 3.x use:
+
+\code
+setenv QTDIR /opt/qt-3.0.0
+setenv PATH ${QTDIR}/bin:${PATH}
+\endcode
+
+Setting \c QTDIR ensures that the proper resources are used, such as the
+documentation appropriate to the version of Qt you're using. Also
+your Makfiles may refer to \c "$QTDIR"/include and \c "$QTDIR"/lib to
+include the proper header files and link with the proper libraries.
+Setting the \c PATH ensures that the proper version of moc and other
+tools is being used.
+
+\target nowinman
+\section1 Using Qt on X11 without a window manager
+
+When using Qt without a window manager on Unix/X11, you will most
+likely experience focus problems. Without a window manager, there is
+no focus handling on X11, and no concept of an active window
+either. If you want your application to work in such an environment,
+you have to explicitly mark a window as active \e after showing it:
+
+\code
+ yourWindow->show();
+ yourWindow->setActiveWindow();
+\endcode
+
+Note that setActiveWindow() won't work if the widget does not become
+physically visible during this event cycle. However, without a window
+manager running, this is guaranteed to happen. For the curious reader:
+setActiveWindow() emulates a window manager by explicitly setting the
+X Input Focus to a widget's top level window.
+
+*/
+
+/*! \page bughowto.html
+\title How to Report A Bug
+
+If you think you have found a bug in Qt, we would like to hear
+about it so that we can fix it.
+
+Before reporting a bug, please check the
+\link commonproblems.html Brief Technical FAQ\endlink, the
+\link http://www.trolltech.com/developer/faqs/ FAQs\endlink, and the
+\link http://www.trolltech.com/platforms/ Platform Notes\endlink
+on our web site to see if the issue is already known.
+
+Always include the following information in your bug report:
+
+\list 1
+\i The name and version number of your compiler
+\i The name and version number of your operating system
+\i The version of Qt you are using, and what configure options it was
+compiled with.
+\endlist
+
+If the problem you are reporting is only at visible run-time, try to
+create a small test program that shows the problem when run. Often,
+such a program can be created with some minor changes to one
+of the many example programs in the \c{qt/examples} directory.
+
+Please send the bug report to
+\link mailto:qt-bugs@trolltech.com qt-bugs@trolltech.com\endlink.
+*/
+
+
+
+
+/*! \page license.html
+
+\title Qt Open Source Edition License Agreement
+
+The Qt Open Source Edition is distributed under the Q Public License (QPL).
+It allows free use of Qt Open Source Edition for running software developed by
+others, and free use of Qt Open Source Edition for development of free and open source
+software. There is \link http://www.trolltech.com/qpl/ more information
+about the QPL\endlink at the Trolltech web site.
+
+Note that the Qt/Embedded Open Source Edition is <b>not</b> distributed
+under the QPL, but under the \link gpl.html GNU General Public
+License (GPL)\endlink.
+
+For development non-free/proprietary software, the Qt Professional
+Edition is available. It has a normal commercial library license, with
+none of the special restrictions of the QPL or the GPL.
+
+<hr>
+
+<center>
+<h2>
+THE Q PUBLIC LICENSE
+version 1.0
+</h2>
+<b>
+Copyright (C) 1999-2008 Trolltech ASA, Norway.<br>
+Everyone is permitted to copy and distribute this license document.
+</b>
+</center>
+
+The intent of this license is to establish freedom to share and change the
+software regulated by this license under the open source model.
+
+This license applies to any software containing a notice placed by the
+copyright holder saying that it may be distributed under the terms of
+the Q Public License version 1.0. Such software is herein referred to as
+the Software. This license covers modification and distribution of the
+Software, use of third-party application programs based on the Software,
+and development of free software which uses the Software.
+
+
+<h3 align="center">
+ Granted Rights
+</h3>
+
+1. You are granted the non-exclusive rights set forth in this license
+ provided you agree to and comply with any and all conditions in this
+ license. Whole or partial distribution of the Software, or software
+ items that link with the Software, in any form signifies acceptance of
+ this license.
+
+2. You may copy and distribute the Software in unmodified form provided
+ that the entire package, including - but not restricted to - copyright,
+ trademark notices and disclaimers, as released by the initial developer
+ of the Software, is distributed.
+
+3. You may make modifications to the Software and distribute your
+ modifications, in a form that is separate from the Software, such as
+ patches. The following restrictions apply to modifications:
+
+<blockquote>
+ a. Modifications must not alter or remove any copyright notices in
+ the Software.
+
+ b. When modifications to the Software are released under this
+ license, a non-exclusive royalty-free right is granted to the
+ initial developer of the Software to distribute your modification
+ in future versions of the Software provided such versions remain
+ available under these terms in addition to any other license(s) of
+ the initial developer.
+</blockquote>
+
+4. You may distribute machine-executable forms of the Software or
+ machine-executable forms of modified versions of the Software, provided
+ that you meet these restrictions:
+
+<blockquote>
+ a. You must include this license document in the distribution.
+
+ b. You must ensure that all recipients of the machine-executable forms
+ are also able to receive the complete machine-readable source code
+ to the distributed Software, including all modifications, without
+ any charge beyond the costs of data transfer, and place prominent
+ notices in the distribution explaining this.
+
+ c. You must ensure that all modifications included in the
+ machine-executable forms are available under the terms of this
+ license.
+
+</blockquote>
+
+5. You may use the original or modified versions of the Software to
+ compile, link and run application programs legally developed by you
+ or by others.
+
+6. You may develop application programs, reusable components and other
+ software items that link with the original or modified versions of the
+ Software. These items, when distributed, are subject to the following
+ requirements:
+
+<blockquote>
+ a. You must ensure that all recipients of machine-executable forms of
+ these items are also able to receive and use the complete
+ machine-readable source code to the items without any charge
+ beyond the costs of data transfer.
+
+ b. You must explicitly license all recipients of your items to use
+ and re-distribute original and modified versions of the items in
+ both machine-executable and source code forms. The recipients must
+ be able to do so without any charges whatsoever, and they must be
+ able to re-distribute to anyone they choose.
+
+ c. If the items are not available to the general public, and the
+ initial developer of the Software requests a copy of the items,
+ then you must supply one.
+</blockquote>
+
+
+<h3 align="center">
+ Limitations of Liability
+</h3>
+
+In no event shall the initial developers or copyright holders be liable
+for any damages whatsoever, including - but not restricted to - lost
+revenue or profits or other direct, indirect, special, incidental or
+consequential damages, even if they have been advised of the possibility
+of such damages, except to the extent invariable law, if any, provides
+otherwise.
+
+
+<h3 align="center">
+ No Warranty
+</h3>
+
+The Software and this license document are provided AS IS with NO WARRANTY
+OF ANY KIND, INCLUDING THE WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS
+FOR A PARTICULAR PURPOSE.
+
+<h3 align="center">
+ Choice of Law
+</h3>
+
+This license is governed by the Laws of Norway. Disputes shall be settled
+by Oslo City Court.
+
+*/
+
+
+/*! \page gpl.html
+\title GNU General Public License
+
+ The Qt GUI Toolkit is Copyright (C) 1994-2008 Trolltech ASA.
+
+ The Qt Open Source Edition and the Qt/Embedded Open Source Edition are available
+ under the GPL. The Qt Open Source Edition (for Unix/X11) is also available
+ under the \link license.html QPL\endlink.
+
+\code
+ You may use, distribute and copy the Qt GUI Toolkit under the terms of
+ GNU General Public License version 2, which is displayed below.
+
+ GNU GENERAL PUBLIC LICENSE
+ Version 2, June 1991
+
+ Copyright (C) 1989, 1991 Free Software Foundation, Inc.
+ 51 Franklin Steet, Fifth Floor, Boston, MA 02110-1301, USA
+ Everyone is permitted to copy and distribute verbatim copies
+ of this license document, but changing it is not allowed.
+
+ Preamble
+
+ The licenses for most software are designed to take away your
+freedom to share and change it. By contrast, the GNU General Public
+License is intended to guarantee your freedom to share and change free
+software--to make sure the software is free for all its users. This
+General Public License applies to most of the Free Software
+Foundation's software and to any other program whose authors commit to
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+
+ When we speak of free software, we are referring to freedom, not
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+
+ For example, if you distribute copies of such a program, whether
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+the Program or works based on it.
+
+ 6. Each time you redistribute the Program (or any work based on the
+Program), the recipient automatically receives a license from the
+original licensor to copy, distribute or modify the Program subject to
+these terms and conditions. You may not impose any further
+restrictions on the recipients' exercise of the rights granted herein.
+You are not responsible for enforcing compliance by third parties to
+this License.
+
+ 7. If, as a consequence of a court judgment or allegation of patent
+infringement or for any other reason (not limited to patent issues),
+conditions are imposed on you (whether by court order, agreement or
+otherwise) that contradict the conditions of this License, they do not
+excuse you from the conditions of this License. If you cannot
+distribute so as to satisfy simultaneously your obligations under this
+License and any other pertinent obligations, then as a consequence you
+may not distribute the Program at all. For example, if a patent
+license would not permit royalty-free redistribution of the Program by
+all those who receive copies directly or indirectly through you, then
+the only way you could satisfy both it and this License would be to
+refrain entirely from distribution of the Program.
+
+If any portion of this section is held invalid or unenforceable under
+any particular circumstance, the balance of the section is intended to
+apply and the section as a whole is intended to apply in other
+circumstances.
+
+It is not the purpose of this section to induce you to infringe any
+patents or other property right claims or to contest validity of any
+such claims; this section has the sole purpose of protecting the
+integrity of the free software distribution system, which is
+implemented by public license practices. Many people have made
+generous contributions to the wide range of software distributed
+through that system in reliance on consistent application of that
+system; it is up to the author/donor to decide if he or she is willing
+to distribute software through any other system and a licensee cannot
+impose that choice.
+
+This section is intended to make thoroughly clear what is believed to
+be a consequence of the rest of this License.
+
+ 8. If the distribution and/or use of the Program is restricted in
+certain countries either by patents or by copyrighted interfaces, the
+original copyright holder who places the Program under this License
+may add an explicit geographical distribution limitation excluding
+those countries, so that distribution is permitted only in or among
+countries not thus excluded. In such case, this License incorporates
+the limitation as if written in the body of this License.
+
+ 9. The Free Software Foundation may publish revised and/or new versions
+of the General Public License from time to time. Such new versions will
+be similar in spirit to the present version, but may differ in detail to
+address new problems or concerns.
+
+Each version is given a distinguishing version number. If the Program
+specifies a version number of this License which applies to it and "any
+later version", you have the option of following the terms and conditions
+either of that version or of any later version published by the Free
+Software Foundation. If the Program does not specify a version number of
+this License, you may choose any version ever published by the Free Software
+Foundation.
+
+ 10. If you wish to incorporate parts of the Program into other free
+programs whose distribution conditions are different, write to the author
+to ask for permission. For software which is copyrighted by the Free
+Software Foundation, write to the Free Software Foundation; we sometimes
+make exceptions for this. Our decision will be guided by the two goals
+of preserving the free status of all derivatives of our free software and
+of promoting the sharing and reuse of software generally.
+
+ NO WARRANTY
+
+ 11. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY
+FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT WHEN
+OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES
+PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED
+OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS
+TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU. SHOULD THE
+PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING,
+REPAIR OR CORRECTION.
+
+ 12. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
+WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR
+REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES,
+INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING
+OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED
+TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY
+YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER
+PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE
+POSSIBILITY OF SUCH DAMAGES.
+
+ END OF TERMS AND CONDITIONS
+
+ Appendix: How to Apply These Terms to Your New Programs
+
+ If you develop a new program, and you want it to be of the greatest
+possible use to the public, the best way to achieve this is to make it
+free software which everyone can redistribute and change under these terms.
+
+ To do so, attach the following notices to the program. It is safest
+to attach them to the start of each source file to most effectively
+convey the exclusion of warranty; and each file should have at least
+the "copyright" line and a pointer to where the full notice is found.
+
+ <one line to give the program's name and a brief idea of what it does.>
+ Copyright (C) 19yy <name of author>
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 2 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, write to the Free Software
+ Foundation, Inc., 51 Franklin Steet, Fifth Floor,
+ Boston, MA 02110-1301, USA.
+
+Also add information on how to contact you by electronic and paper mail.
+
+If the program is interactive, make it output a short notice like this
+when it starts in an interactive mode:
+
+ Gnomovision version 69, Copyright (C) 19yy name of author
+ Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
+ This is free software, and you are welcome to redistribute it
+ under certain conditions; type `show c' for details.
+
+The hypothetical commands `show w' and `show c' should show the appropriate
+parts of the General Public License. Of course, the commands you use may
+be called something other than `show w' and `show c'; they could even be
+mouse-clicks or menu items--whatever suits your program.
+
+You should also get your employer (if you work as a programmer) or your
+school, if any, to sign a "copyright disclaimer" for the program, if
+necessary. Here is a sample; alter the names:
+
+ Yoyodyne, Inc., hereby disclaims all copyright interest in the program
+ `Gnomovision' (which makes passes at compilers) written by James Hacker.
+
+ <signature of Ty Coon>, 1 April 1989
+ Ty Coon, President of Vice
+
+This General Public License does not permit incorporating your program into
+proprietary programs. If your program is a subroutine library, you may
+consider it more useful to permit linking proprietary applications with the
+library. If this is what you want to do, use the GNU Library General
+Public License instead of this License.
+\endcode
+*/
+
+
+
+/*! \page troll.html
+
+\title Company Information
+
+Trolltech is an international software company with
+headquarters in Oslo, the capital of Norway, and with offices
+in Brisbane, Australia, and Redwood City, California.
+
+Our flagship product is \link
+http://www.trolltech.com/products/qt.html Qt\endlink, the
+multi-platform C++ GUI toolkit. Qt enables you to build professional,
+efficient, portable and maintainable GUI applications quickly and
+easily.
+
+\link http://www.trolltech.com/products/embedded/index.html
+Qt/Embedded\endlink, the embedded version of Qt, is designed to power
+todays new generation of embedded computers and electronic consumer
+devices. On top of that, \link
+http://www.trolltech.com/products/qtopia/index.html Qtopia\endlink
+provides a window system and application suite for handheld devices.
+
+\section1 Software that makes Sense
+
+Our motto expresses the vision behind our products. We design our
+products to give our customers the feeling of "this is the way
+that things were always meant to be".
+
+We know that it is crucial for our customers to have good tools for
+making good software. Therefore, we do not compromise our demands for
+superior design and technical quality when we develop our
+products.
+
+Trolltech is also known for providing top quality technical support
+to our customers. At Trolltech, support inquiries are handled by the
+most qualified developers and designers themselves.
+
+\section1 History
+
+Trolltech was founded in 1994. The core team of designers at Trolltech
+started developing Qt in 1992, and the first commercial version of Qt was
+released in 1995. Since then, Trolltech has experienced rapid growth, and
+Qt is currently used in thousands of successful commercial software
+development projects world wide. At Trolltech, we continously work to
+improve and expand Qt to ensure that it always represents the state of the
+art in usability, look and feel, performance, and stability.
+
+For more information, please visit the \link http://www.trolltech.com
+Trolltech website\endlink.
+
+\section1 Contact Information
+
+<br clear="all">
+
+<table cellpadding=3 cellspacing=0 border="0" bgcolor="#E5E5E5">
+<tr><th colspan=6 valign="top" bgcolor="#a2c511">Email</th></tr>
+<tr>
+<td rowspan=4><br></td>
+<td colspan=2>\link mailto:info@trolltech.com <strong>info@trolltech.com</strong>\endlink
+
+<td colspan=2>\link mailto:sales@trolltech.com <strong>sales@trolltech.com</strong>\endlink
+<td rowspan=4><br></td>
+<tr>
+<td ><br></td>
+<td valign="top"> General inquiries and questions. Please check the
+\link http://www.trolltech.com/faq/ FAQ\endlink to see if your question is already answered there.</td>
+<td ><br></td>
+<td valign="top"> Inquires related to purchasing, pricing and availability of
+Trolltech products</td></tr>
+<tr>
+<td colspan=2>\link mailto:www@trolltech.com <strong>www@trolltech.com</strong>\endlink
+<td colspan=2>\link mailto:qt-bugs@trolltech.com <strong>qt-bugs@trolltech.com</strong>\endlink
+<tr>
+<td ><br></td>
+<td valign="top"> Comments about our web pages</td>
+<td ><br></td>
+<td valign="top">
+Use this address for bug reports; \e please read (the very short)
+\link bughowto.html How to Report a Bug\endlink page \e first.
+</td></tr>
+<tr><td ><br></td>
+<td colspan=4 valign="top">Note that Trolltech uses the
+\link http://mail-abuse.org/rbl/ RBL\endlink and
+\link http://work-rss.mail-abuse.org/rss/ RSS\endlink databases to cut down on
+spam. If your mail server is listed, you will regrettably not be able to
+send us mail. The \link http://www.mail-abuse.org/tsi/ MAPS TSI\endlink
+pages provide information about how to secure your server.
+</td><td ><br></td></tr>
+<tr bgcolor="#ffffff"><td bgcolor="#ffffff" colspan="6"> <br> </td></tr>
+<tr><th colspan=6 valign="top" bgcolor="#a2c511">Norway Office</th></tr>
+</tr>
+<tr>
+<td rowspan=4><br></td>
+<td colspan=2><strong>Telephone</strong>
+<td colspan=2><strong>Street/Mail Address</strong>
+<td rowspan=4><br></td>
+<tr>
+<td ><br></td>
+<td valign="top"> General inquiries: +47 21 60 48 00</td>
+<td rowspan=3><br></td>
+<td valign="top" rowspan=3> Sandakerveien 116<br> PO Box 4332 Nydalen<br> NO-0402 Oslo<br> Norway</td></tr>
+<tr>
+<td colspan=2><strong>Telefax</strong></td>
+<tr>
+<td ><br></td>
+<td valign="top"> All inquiries: +47 21 60 48 01</td>
+<tr bgcolor="#ffffff"><td bgcolor="#ffffff" colspan="6"> <br> </td></tr>
+<tr><th colspan=6 valign="top" bgcolor="#a2c511">USA Office</th></tr>
+</tr>
+<tr>
+<td rowspan=4><br></td>
+<td colspan=2><strong>Telephone</strong>
+<td colspan=2><strong>Street/Mail Address</strong>
+<td rowspan=4><br></td>
+<tr>
+<td ><br></td>
+<td valign="top"> General inquiries: (+1) 650-551-1676</td>
+<td rowspan=3><br></td>
+<td valign="top" rowspan=3> 555 Twin Dolphin Drive<br> Suite 280<br> Redwood City, CA 94065<br> USA</td></tr>
+<tr>
+<td colspan=2><strong>Telefax</strong></td>
+<tr>
+<td ><br></td>
+<td valign="top"> All inquiries: (+1) 650-551-1851</td>
+</table>
+
+*/
+
+
+/*! \page guibooks.html
+
+\title Books about GUI
+
+This is not a comprehensive list of books, there are many other
+books worth buying. Here we mention just a few GUI/UI books that don't
+gather dust in our shelves.
+
+<b>C++ GUI Programming with Qt 3</b> by Jasmin Blanchette and Mark
+Summerfield, ISBN 0-13-124072-2. This is the Official Qt book written
+by two veteran Trolls.
+\link http://www.amazon.com/exec/obidos/ASIN/0131240722/trolltech/
+(Read more about it or buy it.)\endlink
+
+<b>The Design of Everyday Things</b> by Donald Norman,
+ISBN 0-38526774-6, is one of the classics of human interface design.
+Norman shows how badly something as simple as a kitchen stove can be
+designed, and everyone should read it who will design a dialog box,
+write an error message, or design just about anything else humans are
+supposed to use.
+\link http://www.amazon.com/exec/obidos/ASIN/0385267746/trolltech/t
+(Read more or buy it.)\endlink
+
+\target fowler
+<b>GUI Design Handbook</b> by Susan Fowler, ISBN 0-07-059274-8, is an
+alphabetical dictionary of widgets and other user interface elements,
+with comprehensive coverage of each. Each chapter covers one widget
+or other element, contains the most important recommendation from the
+Macintosh, Windows and Motif style guides, notes about common
+problems, comparison with other widgets that can serve some of the
+same roles as this one, etc.
+
+\link http://www.amazon.com/exec/obidos/ASIN/0070592748/trolltech/t
+(Read more or buy it.)\endlink
+
+<b>Macintosh Human Interface Guidelines</b>, second edition, ISBN
+0-201-62216-5, is worth buying for the \e {don't}s alone. Even
+though you're not writing Macintosh software, avoiding most of what it
+advises against will produce more easily comprehensible software.
+Doing what it tells you to \e do helps, too.
+\link http://www.amazon.com/exec/obidos/ASIN/0201622165/trolltech/t
+(Read more or buy it.)\endlink
+
+This book is now available
+\link http://developer.apple.com/techpubs/mac/HIGuidelines/HIGuidelines-2.html
+on the web\endlink and there is a
+\link http://developer.apple.com/techpubs/mac/HIGOS8Guide/thig-2.html Mac
+OS 8 addendum.\endlink
+
+<b>The Microsoft Windows User Experience</b>, ISBN 1-55615-679-0,
+is Microsoft's look and feel Bible. Indispensable for everyone who
+has customers that worship Microsoft, and it's quite good, too.
+\link http://www.amazon.com/exec/obidos/ASIN/0735605661/trolltech/t
+(Read more or buy it.)\endlink
+
+Microsoft's guidelines are often available on the web, but have
+occasionally been hidden in an impenetrable maze of javascript.
+\link http://msdn.microsoft.com/library/en-us/dnwue/html/welcome.asp Try and see.\endlink
+
+<b>The Icon Book</b> by William Horton, ISBN 0-471-59900-X, is a
+perhaps the only thorough coverage of icons and icon use in software.
+In order for icons to be successful, people must be able to do four
+things with them: decode, recognize, find and activate them. This
+book explains these goals from scratch and how to reach them, both
+with single icons and icon families. Some 500 examples are scattered
+throughout the text, generally in groups of four or five.
+\link http://www.amazon.com/exec/obidos/ASIN/047159900X/trolltech/t
+(Read more or buy it.)\endlink
+
+\section1 <nobr>Buying these books from</nobr>
+\link http://www.amazon.com/text/ Amazon.com.\endlink
+
+These books are made available in association with Amazon.com, our
+favorite on-line bookstore. Here is more information about
+\link http://www.amazon.com/exec/obidos/subst/help/shipping-policy.html/t
+Amazon.com's shipping options\endlink and its
+\link http://www.amazon.com/exec/obidos/subst/help/desk.html/t
+customer service.\endlink When you buy a book by following one of these
+links, Amazon.com gives about 15% of the purchase price to
+\link http://www.amnesty.org Amnesty International.\endlink
+
+*/
+
+
+/*! \page licenses.html
+\title Licenses for Code Used in Qt
+
+Qt contains a little code that is not under the \link license.html
+QPL\endlink, the \link gpl.html GPL\endlink, or the Qt Commercial
+License Agreement, but rather under specific highly permissive
+licenses from the original authors. This page lists the licenses used
+for that code, names the authors, and links to the points where it is
+used.
+
+Trolltech gratefully acknowledges these and others contribution to
+Qt. We recommend that all programs that use Qt also acknowledge these
+contributions, and quote all these license statements in an appendix
+to the documentation.
+
+\legaleselist
+
+*/
+
+
+/*! \page geometry.html
+\title Window Geometry
+
+\section1 Overview
+
+QWidget provides several functions that deal with a widget's
+geometry. Some of these functions operate on the pure client area
+(i.e. the window excluding the window frame), others include the
+window frame. The differentiation is done in a way that covers the
+most common usage transparently.
+
+\table
+\row
+\i <strong>Including the window frame:
+\i x(), y(), frameGeometry(), pos() and move()
+\row
+\i <strong>Excluding the window frame:</strong>
+\i geometry(), width(), height(), rect() and size()
+\endtable
+
+Note that the distinction only matters for decorated top-level
+widgets. For all child widgets, the frame geometry is equal to the
+widget's client geometry.
+
+This diagram shows most of the functions in use:
+\img geometry.png Geometry diagram
+
+\section1 Unix/X11 peculiarities
+
+On Unix/X11, a window does not have a frame until the window manager
+decorates it. This happens asynchronously at some point in time after
+calling show() and the first paint event the window receives: or it
+does not happen at all. Bear in mind that X11 is policy-free (others
+call it flexible). Thus you cannot make any safe assumption about the
+decoration frame your window will get. Basic rule: there's always one
+user who uses a window manager that breaks your assumption, and who
+will complain to you.
+
+Furthermore, a toolkit cannot simply place windows on the screen. All
+Qt can do is to send certain hints to the window manager. The window
+manager, a separate process, may either obey, ignore or misunderstand
+them. Due to the partially unclear Inter-Client Communication
+Conventions Manual (ICCCM), window placement is handled quite
+differently in existing window managers.
+
+X11 provides no standard or easy way to get the frame geometry once
+the window is decorated. Qt solves this problem with nifty heuristics
+and clever code that works on a wide range of window managers that
+exist today. Don't be surprised if you find one where frameGeometry()
+returns bogus results though.
+
+Nor does X11 provide a way to maximize a window. The showMaximized()
+function in Qt therefore has to emulate the feature. Its result
+depends on the result of frameGeometry() and the capability of the
+window manager to do proper window placement, neither of which can be
+guaranteed.
+
+\section1 Restoring a Window's Geometry
+
+A common task in modern applications is to restore a window's geometry
+in a later session. On Windows, this is basically storing the result
+of geometry() and calling setGeometry() in the next session before
+calling show(). On X11, this won't work because an invisible window
+doesn't have a frame yet. The window manager would decorate the window
+later. When this happens, the window shifts towards the bottom/right
+corner of the screen depending on the size of the decoration frame. X
+theoretically provides a way to avoid this shift. Our tests have
+shown, though, that almost all window managers fail to implement this
+feature.
+
+A workaround is to call setGeometry() after show(). This has the
+two disadvantages that the widget appears at a wrong place for a
+millisecond (results in flashing) and that currently only every
+second window manager gets it right. A safer solution is to store
+both pos() and size() and to restore the geometry using resize() and
+move() before calling show(), as demonstrated in the following
+example:
+
+\code
+ MyWidget* widget = new MyWidget
+ ...
+ QPoint p = widget->pos(); // store position
+ QSize s = widget->size(); // store size
+ ...
+ widget = new MyWidget;
+ widget->resize( s ); // restore size
+ widget->move( p ); // restore position
+ widget->show(); // show widget
+\endcode
+
+This method works on both MS-Windows and most existing X11 window
+managers.
+
+*/