You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
78 lines
3.2 KiB
78 lines
3.2 KiB
13 years ago
|
/*!
|
||
|
|
|
||
|
|
\page opensourceedition.html
|
||
|
|
|
||
|
|
\title Qt Open Source Edition
|
||
|
|
|
||
|
|
Open source software (also called "free software") is software that comes
|
||
|
|
with a license that gives users certain rights. In particular the right to
|
||
|
|
use the software, to modify it, to obtain its source, and to pass it on
|
||
|
|
(under the same terms).
|
||
|
|
|
||
|
|
Trolltech supports the open source software concept by providing the Qt Open Source
|
||
|
|
Edition. You can use this edition of Qt to create open source software, i.e.
|
||
|
|
software that is licensed under the GNU GPL or a similarly recognized
|
||
|
|
open source license. Trolltech's support of open source with the Qt Open Source
|
||
|
|
Edition has enabled large successful software projects like KDE, to
|
||
|
|
thrive, with thousands of developers around the world using the Qt Open Source
|
||
|
|
Edition at no cost to themselves. The Qt Open Source Edition is available for
|
||
|
|
Unix/X11, Macintosh, and embedded Linux.
|
||
|
|
|
||
|
|
The Open Source Edition can be downloaded from here:
|
||
|
|
\l http://www.trolltech.com/download/.
|
||
|
|
|
||
|
|
It is also possible to develop commercial software using Qt, but to do
|
||
|
|
so you must buy a commercial license for the \link
|
||
|
|
commercialeditions.html Professional or Enterprise Edition\endlink. If
|
||
|
|
you buy a commercial edition of Qt you can sell your software for any
|
||
|
|
price and with any license you like. Thousands of commercial companies
|
||
|
|
use commercial editions of Qt to develop the products they sell.
|
||
|
|
|
||
|
|
If you use the Qt Open Source Edition, there are certain licensing
|
||
|
|
conditions that the GNU GPL imposes on you, to ensure that your users
|
||
|
|
enjoy the freedoms guaranteed by the GPL. Users are entitled to:
|
||
|
|
|
||
|
|
\list 1
|
||
|
|
\i Run your software for any purpose.
|
||
|
|
\i Obtain and study your software's source code, and adapt it to their
|
||
|
|
needs.
|
||
|
|
\i Redistribute your software and its source code to others (under the
|
||
|
|
same terms).
|
||
|
|
\i Improve or modify your software, and release these changes to the
|
||
|
|
public.
|
||
|
|
\endlist
|
||
|
|
|
||
|
|
These freedoms apply to all the source code for all the modules your
|
||
|
|
software is based on, regardless of whether they have been written by
|
||
|
|
you or by others. The freedoms also apply to any associated interface
|
||
|
|
definition files, and even include the scripts and control files used
|
||
|
|
to control compilation and installation of the executable; otherwise
|
||
|
|
users could not exercise their rights.
|
||
|
|
|
||
|
|
This means that you cannot use the Qt Open Source Edition if your software
|
||
|
|
must be built with any modules that impose conditions on you that
|
||
|
|
contradict the conditions of the GNU GPL, including, but not limited
|
||
|
|
to, software patents, commercial license agreements, copyrighted
|
||
|
|
interface definitions or any sort of non-disclosure agreement. In
|
||
|
|
these circumstances you must use a commercial edition of Qt.
|
||
|
|
|
||
|
|
See the \link faq.html FAQ \endlink for answers to frequently
|
||
|
|
asked questions on Qt Open Source Edition licensing and its implications.
|
||
|
|
|
||
|
|
More information on open source software is available online:
|
||
|
|
|
||
|
|
\list
|
||
|
|
\i GNU GPL: \l http://www.gnu.org/
|
||
|
|
\i Open source licensing: \l http://www.opensource.org/
|
||
|
|
\endlist
|
||
|
|
|
||
|
|
Information about Qt Commercial License Agreements is available at
|
||
|
|
\l http://www.trolltech.com/pricing.html. You can also email
|
||
|
|
<a href="mailto:sales@trolltech.com">sales@trolltech.com</a>.
|
||
|
|
|
||
|
|
If you are in doubt what edition of Qt is right for your project,
|
||
|
|
please contact
|
||
|
|
<a href="mailto:info@trolltech.com">info@trolltech.com</a>.
|
||
|
|
|
||
|
|
*/
|