Trolltech Launches Qt 4: A Major New Version of Its Cross-Platform Development Software

Trolltech has launched Qt 4, a major new version of its popular cross-platform development software that delivers a comprehensive framework for building high-performance, cross-platform applications. The new features and functionality throughout Qt 4 extend Qt support to the development of the most complex, advanced applications as well as powerful back-end server software. In addition, new integration with Microsoft Visual Studio .NET makes it easier for commercial Windows developers to take advantage of Qt 4, and the extension of Trolltech's dual licensing to Qt for Windows enables Qt open source developers to now target the Windows platform. The new version incorporates a wide range of new and updated features and capabilities designed to increase developer performance and productivity, while extending Qt's applicability to the development of complex, high-end applications, including heavy-duty graphics, extended multi-threading, speed and memory consumption improvements, and new integration with Visual Studio. Qt is an industry-leading C++ application development framework that enables development organizations to write applications once and deploy on any major operating system, including Windows (Windows 98 and later), Linux/Unix and Mac OS X, all from the same code base. The popular KDE Linux desktop as well as thousands of other software applications have been built on Qt, including commercial software from some of the world's largest organizations. Qt 4 is offered under Trolltech's dual-licensing business model for all supported platforms, including Qt for Windows. Dual-licensed software is sold under a commercial license for proprietary, commercial development and is also available under the open source General Public License (GPL) for open source development projects. By making its successful dual-licensing business model available for Qt for Windows, Trolltech further extends Qt's reach into the Windows market, fueling the development of open source applications for the mainstream PC market.