qt: Qt (a multi-platform C++ graphical user interface toolkit) qt: qt: Qt is a complete and well-developed object-oriented framework for qt: developing graphical user interface (GUI) applications using C++. qt: qt: This release is free only for development of free software for the X qt: Window System. If you use Qt for developing commercial or other qt: non-free software, you must have a professional license. Please see qt: http://www.trolltech.com/purchase.html for information on how to qt: obtain a professional license. qt: