Qt 4.6 Release Candidate

Qt 4.6 is the upcoming new version of the Qt cross-platform application and UI framework from Nokia.

Enable developers to create more exciting user experiences
Allow developers to deliver Qt-based applications on more platforms, including the Symbian Platform.
Ensure users of Qt-based applications enjoy the best possible performance

Download and Get Started

The Qt 4.6 Release Candidate is available under a special commercial technology preview license and GNU LGPL version 2.1. Source packages are available for download now.

Download the Qt 4.6 RC

What's Coming in Qt 4.6?

Qt 4.6 extends Qt and introduces a range of new features and optimizations, allowing developers to:

Create more exciting user experiences

Qt 4.6 will make it possible to develop modern, advanced UIs on desktops, embedded and mobile devices. New features include:

Advanced graphics effects like opacity, drop-shadows, glow and filtering
A new animation framework
Gesture-based and multi-touch input methods

Deliver the best possible performance

With version 4.6, Qt-based applications will now run faster and more smoothly. Key improvements include:

Performance improvements to key areas of Qt including: a rewrite of the Qt Graphics View rendering algorithm, resource optimization and a new OpenGL paint engine for 3D graphics rendering
The Qt WebKit Integration has been extended with an API to access and modify the contents (DOM) of Web pages being browsed, as well as performance improvements and a new JavaScriptCore based backend for QtScript
New support for hardware-accelerated 2D vector graphics using OpenVG
Improved support for DirectFB

Target new platforms

Version 4.6 will bring Qt to new platforms, extending the reach of Qt-based applications to more users. New platforms include:

New Qt port to the Symbian Platform ^{(Read more)}
Support for Windows 7 and Mac OS X 10.6
Extended support for UNIX platforms, including Solaris 10, HP-UX and AIX 6

More on the port to Symbian

The Qt port to the Symbian Platform with integration for the S60 framework has now been merged in to the mainline Qt 4.6 branch. After the Qt 4.6 Tech Preview, the focus for the Beta and Release Candidate has been to stabilize the Symbian port. Read more...

Get the details

For a full list of changes and new features planned for Qt 4.6, please visit the online Qt documentation at:

http://doc.qt.nokia.com/4.6-snapshot/qt4-6-intro.html.

Download the Qt 4.6 Release Candidate

The Qt 4.6 Release Candidate is available under a special commercial technology preview license and GNU LGPL version 2.1.

Please consult the Qt 4.6 documentation for known issues with the Release Candidate.

Release Candidate SDK

Special SDK packages have been built including the Qt 4.6 and Qt Creator 1.3 Release Candidates. Choose the SDK package for your development platform from the links below.

Platform	Download
Qt 4.6.0 + Qt Creator 1.3.0 RC SDK for Windows*	Download .exe (271 MB)
Qt 4.6.0 + Qt Creator 1.3.0 RC SDK for Linux/X11 32-bit**	Download .bin (338 MB)
Qt 4.6.0 + Qt Creator 1.3.0 RC SDK for Linux/X11 64-bit**	Download .bin (425 MB)
Qt 4.6.0 + Qt Creator 1.3.0 RC SDK for Mac	Download .bin (604 MB)

*Based on MinGW (download sources) tool set.

Binary Packages

Platform	Download
Qt 4.6.0 RC for Windows: minGW 4.4	Download .exe (259 MB)
Qt 4.6.0 RC for Windows: Visual Studio 2008	Download .exe (182 MB)
Qt 4.6.0 RC for Mac OS X	Download .dmg (158 MB)
Qt 4.6.0 RC for Mac OS X Debug libs	Download .dmg (323 MB)
Qt 4.6.0 RC for Mac OS X Cocoa	Download .dmg (159 MB)
Qt 4.6.0 RC for Mac OS X Cocoa Debug libs	Download .dmg (517 MB)
Qt 4.6.0 RC for Symbian	Download .exe (168 MB)

Single Source Code Package for All Qt Platforms

The Qt 4.6 Release Candidate is available as a single source code package for all supported platforms. Refer to the Qt 4.6 snapshot documentation for installation instructions on your platform.

Download the .tar.gz package (147 MB)

Download the .zip package (172 MB)

Public Repository on http://qt.gitorious.org

The complete Qt 4.6 source code is also available as a public repository at:

http://qt.gitorious.org/qt/qt

How to Provide Feedback

All feedback from the Qt user community is highly valued, and extensive use and testing of the new features in Qt 4.6 is encouraged. There are several ways you can share your feedback:

Join the Qt feedback mailing list

A special mailing list has been set up to collect feedback: qt4-preview-feedback@trolltech.com. To subscribe, send a message containing just the word subscribe to qt4-preview-feedback-request@trolltech.com. For more information on all Qt mailing lists, and to view archived discussions, please visit http://lists.trolltech.com/.

Contribute a bugfix through qt.gitorious.org

The Qt repositories are now open for contributions of code, and we encourage you to submit your own fixes to bugs you find in pre-release versions of Qt 4.6. Check out the Qt 4.6 repository at:

http://qt.gitorious.org/qt/qt

Find out more about how you can contribute to Qt.

Report a bug with the Qt Bug Tracker

Bugs in pre-release versions of Qt 4.6 can be reported using the Qt Bug Tracker. When reporting a bug, please be sure to select Qt 4.6.0 as the version number.

Sections