Qt-UI
Licensing
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Qt is licensed under a commercial and open source license (GNU Lesser General Public License version 2.1).
Remark: back in time there was only a commercial license for windows, but nowadays all platforms share the same licensing terms.
Commercial licensing
- “The commercial License of Qt is the correct license to use for the development of proprietary and/or commercial software with Qt where you need to safeguard your development investment to secure your competitive advantage.”
Open Source Licensing
- “Alternatively Qt is also licensed under under the GNU General Public License (GPL) (version 3) and the GNU Lesser General Public License (LGPL) (version 2.1). You can use this edition of Qt to create and distribute software with licenses that are compatible with these free software licenses. LGPL and GPL are complex licenses that contain many obligations and restrictions you must abide with. Always consult an experienced lawyer before choosing these licenses for your project.”
You can download Qt under an open-source license from http://qt-project.org/
Extensive documentation is avalaible at http://qt-project.org/doc/qt-4.8/
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