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The Qt Project is a project to co-ordinate the development of the Qt software framework. Originally founded by Nokia, the project is now led by Digia (its subsidiary Qt Company) after it acquired Qt software technologies, trademarks, and personnel from Nokia. == History == Haavard Nord and Eirik Chambe-Eng (the original developers of Qt and the CEO and President, respectively, of Trolltech) began development of "Qt" in 1991, three years before the company was incorporated as Quasar Technologies, then changed the name to Troll Tech and then to Trolltech.〔(【引用サイトリンク】title=A Brief History of Qt )〕 Until version 1.45, source code for Qt was released under the FreeQt license. This was viewed as not compliant with the open source principle by the Open Source Initiative and the free software definition by Free Software Foundation because, while the source was available, it did not allow the redistribution of modified versions. Controversy erupted around 1998 when it became clear that KDE’s K Desktop Environment was going to become one of the leading desktop environments for Linux. As it was based on Qt, many people in the free software movement worried that an essential piece of one of their major operating systems would be proprietary. With the release of version 2.0 of the toolkit, the license was changed to the Q Public License (QPL), a free software license but one regarded by the Free Software Foundation as incompatible with the GPL. Compromises were sought between KDE and Trolltech whereby Qt would not be able to fall under a more restrictive license than the QPL, even if Trolltech was bought out or went bankrupt. This led to the creation of the KDE Free Qt Foundation which guarantees that Qt would fall under a BSD-style license should no free/open source version of Qt be released during 12 months. In 2000, Qt 2.2 was released under the GPL v2, ending all controversy regarding GPL compatibility. On Nokia announced to acquire Trolltech.〔(【引用サイトリンク】title=Nokia to acquire Trolltech to accelerate software strategy )〕 On Qt version 4.5 added LGPL as licensing option. The Qt Project was founded on .〔 In August 2012 Digia announced to acquire all rights to Qt and take Nokia’s role within the Qt Project.〔 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Qt Project」の詳細全文を読む スポンサード リンク
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