Qt 5.3 Released

Published Tuesday May 20th, 2014 | by

I’m happy to announce that Qt 5.3 has been released. The main focus for this release was performance, stability and usability. Nevertheless, Qt 5.3 has also gotten a fair amount of new features that help make developers’ lives easier.

Qt 5.2 has been a tremendous success, having been downloaded over 1 million times. With Qt 5.2, we delivered on our promise that Qt is a true cross-platform framework by adding Android and iOS support. Qt 5.3 is building on that foundation, and adding to it.
Read more…


Posted in Qt, QtCreator, Releases, RTOS, WinRT

Qt Weekly #11: Getting started with WinRT

Published Tuesday May 20th, 2014 | by

With Qt for WinRT in Beta status for 5.3.0, you can now get started with the new port and package your application for the Windows and Windows Phone Stores.

This tutorial video walks through opening an existing project in Qt Creator, generating a project file for Visual Studio, and deploying the application to the various WinRT targets. Finally, we cover some packaging details for the Windows marketplaces.

Read more…


Posted in Debugging, QtCreator, Tutorial, Visual Studio, WinRT

Qt Creator 3.1.0 released

Published Tuesday April 15th, 2014 | by

We are happy to announce the release of Qt Creator 3.1.0! This release of Qt Creator is packed with bug fixes and improvements, not to forget some new experimental features.

We finally integrated a Clang-based C/C++ code model as an option for code completion and semantic highlighting. It is experimental so far, so you need to enable the plugin in Help > About Plugins > C++ > ClangCodeModel, restart Qt Creator, and tell it to actually use it in Options > C++ > Code Model. We are interested in your feedback on how well it works. Please report issues on our bug tracker or get in contact with us on the mailing list or irc.

iOS support has moved out of experimental state, and fully supports QML debugging and profiling now. Also, several issues with debugging have been fixed, and many little things were tweaked (for example, you can now set the simulated device in the simulator run configuration).
Read more…


Posted in Qt, QtCreator, Releases

Qt Creator 3.1 RC1 released

Published Thursday April 3rd, 2014 | by

We are happy to announce the Qt Creator 3.1 RC1 release today. We have been fixing lots of bugs during the weeks since the beta, and think that we are now almost ready. So, this is the call to all of you, to give it a try, and give us some more feedback!

If you haven’t followed the beta release, I highly recommend reading the corresponding blog post for some information about the new features in Qt Creator 3.1. There are two features in 3.1 that I haven’t mentioned there, and which I’d like to highlight here:

We ship a new, experimental plugin for WinRT development (only available on Windows). You can read more about it in its own blog post here.

The iOS plugin went out of experimental state, and is enabled by default now (only available on Mac OS X). It now supports QML debugging and profiling, and many things have been fixed and tweaked, for example you can set the simulated device in your simulator run configurations now.

You find the opensource version on the Qt Project download page, and Enterprise Customers find their package in 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.


Posted in Qt, QtCreator, Releases

Experimental Version of Qt Creator’s WinRT Plugin

Published Wednesday March 5th, 2014 | by

As many of you might have heard, we released Qt Creator’s 3.1 beta version on March 4th. While a lot of new things were mentioned in the blog post here, we still have something more to tell you about. The first version of our new WinRT plugin is now up and running – and already available in Qt Creator 3.1 beta. While there are still things that do not work yet, it is a great start and a lot of functionality is already covered.

The main features that already work nicely are:

  • Registration of Windows Runtime and Windows Phone Qt versions
  • Support for Windows Runtime and Windows Phone Kits
  • Building of Windows Runtime and Windows Phone applications
  • Running of applications for Windows Runtime and Windows Phone via Qt Creator’s “Run” button

Read more…


Posted in Mobile, Qt, QtCreator, Windows

Qt Creator 3.1 beta released

Published Tuesday March 4th, 2014 | by

We proudly present the Qt Creator 3.1 beta release today. This release introduces new features, as well as a whole bunch of bug fixes and improvements. About 1100 changes went into our repository since the 3.0.1 release, from around 45 authors. Many thanks to all who contributed so far!

Reading the git log is a bit boring (believe me ;) ), so you find a summary in our change log, and I’ll highlight a few things here.

I think one of the most important things is that we finally integrated experimental support for a Clang-based C++ model. You might know that Qt Creator has its own code model, which has for example the advantage that it is very fast, but the disadvantage that this is traded for some correctness. You might also know that Clang, the LLVM front-end for C/C++/Objective-C/Objective-C++ provides a library that can be used to integrate it, for example, into IDEs. That has the advantage that it is correct (after all it’s the base for a compiler), but the disadvantage that it is not very fast. We have been talking about integrating Clang into Qt Creator for a long time, and also had an experimental branch for it, and now we finally have integrated it as an option into Qt Creator.
Read more…


Posted in Qt, QtCreator, Releases

Qt Creator 3.0.1 Released

Published Wednesday February 5th, 2014 | by

We are happy to announce the release of Qt Creator 3.0.1. This version of Qt Creator is a pure bugfix release, and contains fixes for issues in Qt Quick Designer, debugging support, Android and iOS support and many other areas. For a more detailed list see our changes file.

Qt Creator 3.0.1 is released in conjunction with Qt 5.2.1.

Download Qt Creator 3.0.1 standalone

Download Qt 5.2.1 (read the blog post)

Qt Enterprise customers find the release in the Qt Enterprise Customer Portal or as an update via the online installer.
Qt Mobile subscribers get it automatically through the online installer.


Posted in Qt, QtCreator, Releases

Qt Creator 3.0 Released

Published Thursday December 12th, 2013 | by

We are happy to announce the Qt Creator 3.0 final release today, together with the Qt 5.2 final.

Aside from many improvements and new features, this new version of Qt Creator improves support for the various platforms. Android received support for the new deployment method available in Qt 5.2, which was described in more detail in a separate blog post. QNX/BlackBerry received support for the new 10.2 NDKs and improved device management. Completely new is experimental support for iOS, which allows you to code, build, deploy, run and debug your applications for both simulator and devices directly from Qt Creator. The plugin is turned off by default, but if you install Qt for iOS through one of the Qt 5.2 installers, it is automatically enabled for you in the Qt Creator that is installed as well. Also new is some experimental support for “bare metal” devices which only have a gdbserver/openocd compatible service running on them. Many thanks to Tim Sander for this contribution!

C/C++ support has received many improvements again. Aside from many bug fixes, we got refactoring actions for “Optimize For Loop” and  ”Extract Constant as Function Parameter”, and when you “Follow Symbol” on virtual function calls, you now get to decide to which implementation you want to jump.

We also put a lot of effort into getting LLDB debugging support into shape. We do not have feature parity with gdb/Linux support yet, but in most ways it surpasses gdb/Mac support now. The basic debugging features work, and many of the non-basic ones too, including a good part of the Qt and std:: pretty printers.

Support for the git version control system was extended a lot, for example you can now remove and rename tags, set the remote tracking branch, recursively clone, and stage and unstage chunks directly from the unified diff viewer. Also it is now possible to switch between the side-by-side and unified mode with a button in the diff viewer.

Of course much more has changed, so I suggest you just head over to the download pages and try for yourself:

Download Qt Creator 3.0 standalone

Read more about Qt 5.2 (which comes with Qt Creator 3.0)

Qt 5.2 known issues


Posted in Qt, QtCreator

Qt Creator 3.0 RC1 released

Published Friday November 29th, 2013 | by

We just released the Qt Creator 3.0 release candidate, together with the Qt 5.2 release candidate. We have been doing a lot of bug fixing since the beta release, and think that Qt Creator 3.0 is now relatively close to what we would like to release as the final. So we would really like you to have a try and report remaining issues that you find. Please use our bug tracker at bugreports.qt-project.org for that, project “Qt Creator”, the best fitting component, and “Affects Version: 3.0.0-rc1″.

If you are interested in what the new features in 3.0 are, please head over to the beta release blog post, or have a look at the (not yet complete) change log.

Download Qt Creator 3.0 rc1 standalone

Download Qt 5.2 rc  (includes Qt Creator)

Qt 5.2 rc known issues


Posted in Qt, QtCreator

Qt Creator and LLDB

Published Tuesday November 12th, 2013 | by

As at least the Mac people know, we have had some support for the LLDB debugger simmering in the cauldron for a quite a while. There was some investigative work done a while ago, back then targeted at desktop Mac and based on the library interface LLDB provides. It turned out to be not working too well on Mac, and not compiling anywhere else, and with the existing GDB solution in a somewhat working state, the effort was put on hold.

Fast forward. Time changes environments, changing environments sometimes result in different answers. In times of Qt-on-iOS and with Apple’s support for GDB dwindling, it became quite clear that we will need support for LLDB as a backend in Qt Creator sooner rather than later and so the work was re-started in the 2.8 release cycle, this time using LLDB’s Python interface.

The decision to go with Python is clearly a trade-off. On the “contra” side there’s mainly the performance penalty we pay for the interpreted nature of the approach; on the “pro” side there are distribution considerations (it’s often easier to just work with an installed “system” debugger than to ship debugger binaries), and there was some hope that we could directly re-use one of the biggest assets of Qt Creator, the “dumpers” (Qt Creator speak), a.k.a. “pretty printers” (GDB speak), a.k.a. “data visualizers” (LLDB speak).

So what works with upcoming Qt Creator 3.0 and LLDB?

Right now the focus is on the “LLDB 300.2″ build that’s shipped with the Xcode 5 Command Line Tools on Mac. That’s the one intented to be used with Qt-on-iOS, and probably the most common setup for the next couple of months. Other versions are known to work to varying degrees, but they are not currently tested at all.

Setting of simple breakpoints, running, and breaking are working. Stepping, especially around inlined function code behaves sometimes quite differently from how GDB would behave, but since that part of the functionality is completely done inside the backends, there is not really much Qt Creator can (and possibly even should) do. The situation is also not really different compared to the GDB-vs-CDB situation, so I trust people with a genuine cross-platform background to consider this bearable.

Display of basic data and plain C-style structures work just fine. Also, 184 of 226 dumper tests pass, meaning that the bulk of non-trivial display is also there. The remaining FAILs are fairly distributed. There are a few missing implementations and some cases of slight variations in visual output compared to other backends. At least one item looks like broken debug information produced by Clang, and  a couple of issues are caused by type lookups in LLDB. Nothing that would count as a show stopper, though.

Also working are quite a few bits and pieces all over the place. Disassembler views (including steppings) and Registers work, as do “Evaluated Expressions”, and of course Stack view with frame switching, etc.

What doesn’t work?

Roughly speaking, “anything else”. Some of the views need some extra nudge to be populated (Modules->Update Module List, …), some aren’t handled yet at all (Snapshots, Source Files, …).

And for the future?

“Finishing it”, clearly. There’s still a lot of glue missing, even things that are trivial to fix. There is some headroom on the performance side, and it’s currently not yet feeling robust. Not unusable, but not comparable to GDB on Linux, either. Given the past experience with the other backends, this maturing will accompany us during some more minor releases.

The environment is, for a change, quite refreshing to work with. The available interfaces are rather complete, thanks to the use of SWIG. Typically, the question is not the so far customary: “How can I get hold of this piece of data at all?” Often it is: “Which of the functions is best, or fastest, or the recommended one?” (In case some LLDB developer reads this here: Big thanks, and hats off!)

All-in-all, I am pretty confident we are on the right track here, including the option to leave the Mac-only corner soonish. Qt Creator 3.0 will support both GDB and LLDB as debugger backends on Mac. Neither will be perfect, but if you want to help to improve the situation, either by filing issues in the bug tracker or even by contributing real code, go for LLDB.


Posted in C++, Mac OS X, Qt, QtCreator

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