This is Qt version 4.3.5. Qt is a comprehensive cross-platform C++ application framework. Qt 4.3 introduces new features and many improvements over the 3.x series. See http://doc.trolltech.com/4.3/qt4-intro.html for details. The Qt 4.x series is not binary compatible or source compatible with the 3.x series. For more information on porting from Qt 3 to Qt 4, see http://doc.trolltech.com/4.3/porting4.html. INSTALLING Qt On Windows and Mac OS X, if you want to install the precompiled binary packages, simply launch the package and follow the instructions in the installation wizard. On Mac OS X, the binary package requires Mac OS X 10.4.x (Tiger) or later and GCC 4.0 to develop applications. Its applications will run on Mac OS X 10.3.9 and above. If you develop with another compiler/version of OS X, please use the source package instead. If you have a source package (a .tar.gz, .tar.bz2, or .zip file), follow the instructions in the INSTALL file. DEMOS AND EXAMPLES Once Qt is installed, we suggest that you take a look at the demos and examples to see Qt in action. Run the Qt Examples and Demos either by typing 'qtdemo' on the command line or through the desktop's Start menu. On Mac OS X, you can find it in /Developers/Applications/Qt. REFERENCE DOCUMENTATION The Qt reference documentation is available locally in Qt's doc/html directory. You can use Qt Assistant to view it; to launch Assistant, type 'assistant' on the command line or use the Start menu. On Mac OS X, you can find it in /Developer/Applications/Qt. The latest documentation is available at http://doc.trolltech.com/. SUPPORTED PLATFORMS For this release, the following platforms have been tested: win32-g++ win32-icc (commercial edition only) win32-msvc (commercial edition only) win32-msvc.net (commercial edition only) win32-msvc2005 (commercial edition only) aix-g++ aix-xlc aix-xlc-64 freebsd-g++ freebsd-icc hpux-acc hpux-g++ irix-cc irix-cc-64 irix-g++ linux-g++ linux-icc solaris-cc solaris-cc-64 solaris-g++ solaris-g++-64 macx-g++ For a complete list of supported platforms, see http://www.trolltech.com/developer/notes/supported_platforms For a description of Qt's platform support policy, see http://www.trolltech.com/developer/notes/supportpolicy COMMERCIAL EDITIONS Desktop Edition licensees can use all the modules provided with their Qt package. Desktop Light Edition licensees may only use the classes contained in the QtCore, QtGui (except QGraphicsView) and Q3Support modules. Console Edition licensees may use the classes contained in the QtCore, QtNetwork, QtSql and QtXml modules. For a full listing of the contents of each module, please refer to http://doc.trolltech.com/4.3/modules.html. HOW TO REPORT A BUG If you think you have found a bug in Qt, we would like to hear about it so that we can fix it. Before reporting a bug, please check http://www.trolltech.com/developer/faqs/ and http://www.trolltech.com/developer/platforms/ to see if the to see if the issue is already known. Always include the following information in your bug report: the name and version number of your compiler; the name and version number of your operating system; the version of Qt you are using, and what configure options it was compiled with. If the problem you are reporting is only visible at run-time, try to create a small test program that shows the problem when run. Often, such a program can be created with some minor changes to one of the many example programs in Qt's examples directory. Please send the bug report to qt-bugs@trolltech.com. Qt is a trademark of Trolltech ASA.