This is Qt version 3.0.1, the cross-platform C++ GUI toolkit.

Qt 3 contains many new features, improvements and extensions. It also
includes a significantly improved Qt Designer, and introduces Qt
Linguist, Qt Assistant and a new multi-platform build tool,
'qmake'. In addition to the traditional Qt platforms- Linux, Unix and
the various flavors of MS-Windows, Qt 3 for the first time also
introduces a native port to Mac OS X.

Detailed information about the modifications and new features for Qt 3
is included in the Online Reference Documentation.

Due to our recently increased development team, we have been able
to realize far more of your requests in this release. Qt 3 is a great
step towards realizing our vision of an ideal cross-platform
development tool.

The Qt version 3.x series is not binary compatible with the 2.x
series. This means programs compiled with Qt version 2.x must be
recompiled to work with Qt 3.

Qt 3 is mostly, but not completely, source compatible with the Qt 2.x
series. See the document "Porting from Qt 2.x to Qt 3.0" in the Online
Reference Documentation for information on how to port an existing Qt
2.x-based program to Qt 3. Disclaimer: the guide is not entirely
complete, so it is possible that you'll discover issues that are not
yet covered in the documentation.

The most visible change for long term Qt users is the reworked build
system. On MS-Windows, run qt-win-commercial-3.0.1.exe; on Unix and
Mac OS X, unpack the package and run ./configure. Compiling and
installing Qt uses a new utility 'qmake' which we recommend for
writing Qt­based applications. 'qmake' is the successor of our free
software add-on 'tmake', and is written using Qt rather than
Perl. 'qmake' is fully compatible with 'tmake'.

To improve maintainability between different platforms, all specific
platform #defines and #includes have been moved out of the Qt sources
into a platform specific qplatformdefs.h file.  The files are located
in mkspec/<platform>-<compiler>/qplatformdefs.h. For this release, the
following platforms have been tested:

win32-borland
win32-msvc

irix-o32
irix-n32
irix-g++
tru64-cxx
tru64-g++
solaris-cc
solaris-g++
linux-g++
linux-kcc
freebsd-g++
unixware7-g++
unixware7-cc
aix-g++
aix-xlc
hpux-acc
hpux-g++
openunix-cc
openunix-g++

macx-g++
macx-pbuilder

If you want to try and use Qt 3 on an unsupported version of Unix, please
contact us at qt-bugs@trolltech.com so that we can assist you.


How to get the release:

Qt Free Edition: Download the .tar.gz archive from
ftp.trolltech.com. To get better download times, use ftpsearch and
search for qt-x11-free-3.0.1.tar.gz to find it on a mirror ftp site
near you.

Qt Professional Edition, Qt Enterprise Edition: Holders of valid
licenses should have received an e-mail with instructions on how to
get the new release. Contact sales@trolltech.com if you are a
Professional or Enterprise Edition licensee and have not received this
e-mail.


Any problems encountered with Qt 3.0 should be reported to
qt-bugs@trolltech.com.

Qt is a trademark of Trolltech AS.