Qt

Qt 5.3.2 Released with Qt Creator 3.2.1

Published Tuesday September 16th, 2014 | by

Today we have released Qt 5.3.2, the second patch update to Qt 5.3. In addition to improvements and fixes to Qt functionality it also packs Qt Creator 3.2.1 along with nice additions and patches to Qt Quick Compiler, Qt Quick Enterprise Controls and Qt Purchasing.

Also, with Qt 5.3.2 we are extremely proud of rolling out the new licensing tiers, now including the much-desired Indie Mobile tier. See the blog post about all the new announcements, and visit the new Qt download page for your copy of Qt 5.3.2!

With Qt 5.3.2 we are providing nice set of bug fixes and enhancements thanks to all the feedback and reports we’ve received! Qt 5.3.2 maintains backward and forward compatibility, both source and binary, with Qt 5.3.0 and the latest, 5.3.1, which was released this June. The list of changes can be found from the change files for each module.

The packages of Qt 5.3.2 also include new Qt Creator patch release, Qt Creator 3.2.1. See the blog post about Qt Creator 3.2.1 for details.

We are also releasing nice updates to a bunch of add-on modules for commercial Qt licensees, all installable through your Qt online installer. The new and exciting Qt Quick Compiler gets its first update and we are adding the long-awaited Tumbler control to Qt Quick Enterprise Controls! Here’s the overview of updates to Add-On modules:
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15 Comments


Posted in Qt, QtCreator, Releases

Qt Creator 3.2.1 released

Published Tuesday September 16th, 2014 | by

We are happy to announce Qt Creator 3.2.1. This release contains a range of bugfixes, including fixes for:

  • a freeze when using the current project or the all projects locator filters via keyboard shortcut
  • a deployment error in the OS X packages which led to the Clang code model plugin not loading
  • a crash when opening the context menu on C++ macro parameters

For a full list of fixes, please see our change log.

You find the opensource version on the Qt Project download page, and Enterprise packages on the Qt Account Portal. Please post issues in our bug tracker. You can also find us on IRC on #qt-creator on irc.freenode.net, and on the Qt Creator mailing list.

5 Comments


Posted in Qt, QtCreator, Releases

Qt Weekly #19: QOpenGLWidget

Published Wednesday September 10th, 2014 | by

After Qt 5.3′s introduction of QQuickWidget, Qt 5.4 adds QOpenGLWidget, the long-awaited replacement for the legacy QGLWidget. This widget retains the familiar initializeGL/resizeGL/paintGL API, while enabling full interoperability with other widgets in complex user interfaces.

Internally QOpenGLWidget is built on the same technology as QQuickWidget. Unlike QGLWidget, it is not a native window and will not turn any siblings or ancestors into native either. This avoids stacking, clipping, focus and performance issues and is expected to behave identically across all supported platforms.

Read more…

16 Comments


Posted in Graphics, OpenGL, Qt

Qt 5.4 Alpha Available

Published Monday September 8th, 2014 | by

Qt 5.4 release process is ongoing and we now have the Qt 5.4 Alpha release available. As always, the Alpha is in source code only. Binary installers will be available in a few weeks with the Beta release. Features of Qt 5.4 are now frozen and in the next months the focus is in finalising and polishing functionality. To give an overview what is coming with Qt 5.4, I’ll summarise the highlights of the Qt 5.4 Alpha release.

Read more…

41 Comments


Posted in Qt, Releases

Adding LGPL v3 to Qt

Published Wednesday August 20th, 2014 | by

20 years ago, Trolltech, the company that created Qt, was founded. One of its founding principles was to release Qt as free software to the open source community. In the early versions, this was limited to Unix/Linux and the X11 windowing system. Over the years, more and more platforms were included into the open source version of Qt.

At the same time, the licenses under which Qt was available evolved. The Qt 1.x source code was still released under a rather restrictive license. With Qt 2, we moved over to the QPL. Some years later, with Qt 4.0, Qt started to embrace the GPL v2, to remove some license conflicts between GPL-based applications and the QPL.

Trolltech was involved in talks with the Free Software Foundation (FSF) when the GPL v3 was created, and we added this license as an optional license for Qt after it was published by the FSF. Finally, in 2009 Nokia added LGPL v2.1 as a licensing option to Qt.

The spirit of all GNU licenses is about a strong copyleft, giving users rather strong access and rights to the source code of application and libraries. It was always meant to protect the users’ freedom to modify the application and underlying libraries and run the modified application.

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16 Comments


Posted in Community, KDE, News, Qt

Qt Creator 3.2.0 released

Published Tuesday August 19th, 2014 | by

We are happy to announce the Qt Creator 3.2.0 release today. This release adds many smaller and larger features, as well as fixing bugs. A few examples:

  • Block selections in text editors now allow you to do “column editing”, meaning that all selected lines are edited simultaneously (Qt Creator Manual)
  • Context help can now be configured to open in an external window (without disabling Help mode)
  • Support for C99 designated initializers and concatenated strings was added to the C++ code model, as well as improvements to encoding handling and lambda support and many other things
  • More panes are now searchable with Ctrl+F, for example the project tree
  • The QML profiler received many performance and stability improvements again

Enterprise Qt Creator users can now also use the QML profiler to debug their JavaScript memory usage in QML. (This is only available when using Qt 5.4 for the debugged application.)

Also have a look at our change log, for a more complete overview. I also want to thank the more than 50 contributors to this version of Qt Creator.

You find the opensource version on the Qt Project download page, and Enterprise packages on the Qt Account Portal. Please post issues in our bug tracker. You also can find us on IRC on #qt-creator on irc.freenode.net, and on the Qt Creator mailing list.

Note: With Qt Creator 3.2 we drop support for OS X 10.6 (Snow Leopard). The technical reason for this is that Apple does not support any kind of C++11 on that OS version. Of course that does not affect on which platforms you can run your Qt applications on. But it is not possible to run the Qt Creator 3.2 binaries on 10.6, and it also is not possible to compile Qt Creator 3.2 on 10.6 with the tool chains provided by Apple.

43 Comments


Posted in Qt, QtCreator, Releases

Defragmenting Qt and Uniting Our Ecosystem

Published Wednesday August 6th, 2014 | by

Over the last years, many changes have been happening in the Qt ecosystem. One of the biggest was the creation of Qt Project where Qt is now being developed as an open source project. The Qt Project was created to provide a space open for all to further develop and foster innovation for the Qt technology.

Qt has always been a commercial product. During the Trolltech days licensing income funded development of the product. While Nokia’s motivations were different, at Digia, our goal is to again make sure that Qt thrives for all industries, all companies, all users no matter what platform. That said, we need to make sure the business of selling Qt as a product is successful in order to fund its future development for the good of everyone in our ecosystem. The importance of Digia’s commercial business for securing the future of Qt cannot be underestimated as it drives Qt’s foundation and everyday operations. A look into the commit statistics shows that around 75% of all code submissions to qt-project.org come from Digia employees. In addition, Digia manages the release process and the CI and testing infrastructure, thus covering more than 85% of the costs of developing Qt.
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84 Comments


Posted in Community, News, Qt

Google Labs VoltAir Game Built with Qt

Published Monday July 21st, 2014 | by

As the dog days of summer carry on, we at Digia, Qt are swatting down flies, mosquitoes and bees while we fan ourselves in the unusual summer heat currently striking Scandinavia … in Oslo … at least.

Meanwhile, on a cool note, the Fun Propulsion Labs at Google announced last week that, VoltAir a single and multi-player game built with Qt is available for download via the Google Play Store and as open source software. Coolbeans!

VoltAir was developed to provide an example of a C++ game designed for both Android and Android TV and the folks at Google also tested it on Nexus 5, Nexus 7, Moto X by Motorola, Android TV, and some Samsung devices.

Check Out VoltAir (Courtesy of Google Developers – YouTube)

Read more…

14 Comments


Posted in Android, Announcements, Labs, Qt, Qt Quick

Qt Weekly #13: QStringLiteral

Published Friday June 13th, 2014 | by

QStringLiteral is a macro that allows you to create QString objects from string literals with little to no runtime overhead. However, its usage can be tricky especially in code that must compile with different compilers, like the Qt code itself. This blog post lists some guidelines to help you avoid the pitfalls.

QString is the ubiquitous representation for a Unicode string in Qt. A common source for a QString are literals hard-coded into the application. In Qt 4, any such creation of a QString from a literal required creating the QString object on the heap, and then translating the literal characters from its run-time character codec to UTF-16. Since Qt 5.0, QStringLiteral allows to avoid this overhead by creating the object and doing the conversion at compile time.

Enable C++11 in your project

QStringLiteral is only optimized if the C++ compiler both supports lambdas and unicode literals. This is the case for Microsoft Visual Studio 2010 and newer, but GCC and Clang need to be told that they should support all C++11 features. When using qmake, this can be achieved by
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Posted in C++, Qt | Tags: , ,

Qt Cloud Services at Contributors Summit

Published Wednesday June 11th, 2014 | by

Greetings from Qt Contributors Summit!

How’s it going? We just had a session about Qt Cloud Services here at Qt Contributors Summit and it was great! In our session, we demoed the brand new Managed Runtime service and got very good feedback from the people. With our Managed Runtime service you can write and deploy your server-side software written with Qt or a number of other programming languages in a matter of minutes.

Want to see how it works? Check the video at https://vimeo.com/97709588.

In case you want to know more details, check the Qt Contributors Summit presentation at http://www.slideshare.net/qtcloudservices/qtc-managedruntimes.

The service will become available for public by end of June 2014. If you want early access, sign-up at https://qtcloudservices.com/early-access.

Hope to see you in Qt cloud soon! If you have any questions, just let me know!

2 Comments


Posted in Cloud, Qt, Qt Cloud Services | Tags:

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