Jani Heikkinen

Qt 5.5 Release Candidate Available

Published Monday June 22nd, 2015
24 Comments on Qt 5.5 Release Candidate Available
Posted in Releases

I am happy to announce that Qt 5.5 Release Candidate is now available.

Please download and try it out – it is quite close to final release, and we very much value your feedback:

For those who have not yet checked what Qt 5.5 brings, please refer to the Qt 5.5 Beta blog post, the wiki article listing new Qt 5.5 features, or the documentation snapshot for more details.

Qt 5.5 Release Candidate is available via offline installers. Offline Installers are available from the Qt Account for commercial users of Qt. Open source users can download installers from download.qt.io.

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Posted in Releases


Dimitar Dobrev says:

Is there any way you could generate the documentation index for the final 5.5u using the fixes for https://bugreports.qt.io/browse/QTBUG-46034 and https://bugreports.qt.io/browse/QTBUG-46148 ?

HGH says:

VS2015 prebuilt – will they be available for Qt 5.5 when RTM appears?

Maurice Kalinowski Maurice Kalinowski says:

Our plan is to have Qt 5.5.0 released before Visual Studio 2015 final is out. So for the Qt 5.5 series we will most likely not be able to do this.

However, for sure in Qt 5.6 this will be a topic to discuss.

Code_Junkie says:

Enhancement request: Ability to address translators by resource IDs

Reason: There are developers out there who do not like mixing code with data. Especially on large-scale projects, it’s a no-go to use intrisinc functions with clear text because all the project has to be searched, if the non-localized version of a text needs to be changed. printf(tr(“hello world”)); is something from the stone-age. You should consider using resource classes, i.e. printf(Resources.English.Str_GreetText); in the above case.

dev-sst says:

You mean like in http://doc.qt.io/qt-5/linguist-id-based-i18n.html (and for Widgets) https://wiki.qt.io/QtInternationalization#Id_based_translations ?

Pavel Geiger says:

Is this supported by Qt Designer? Last time I tried, it wasnt.

Kai Koehne says:

Qt supports ID-based translations, but arguably it’s second-class, and there’s no push to change that. I also don’t think most users think text-based translations are ‘stone-age’, see e.g.


Regarding changing the source code for simple fixes: You can always ship an english translation, using the tr(“”) content basically as engineering english (or even as an identifier, if you want to).

AndreyOGL_D3D says:

It Is this supported QOpenGLWidget on IOS platform ?

petr_kkk says:

Why Windows offline instalation needs administration rights?

Previous versions ( 5.4.2 included ) did not need that. Any user could install it.

Maurice Kalinowski Maurice Kalinowski says:

I am pretty sure, the previous versions also checked for admin rights in case this was required.

One example would be the installation of the c runtime redistributable. In case that is non existing, we need to install that and this step requires admin.

It happens from time to time that we need to update this one, so that might be one of the reasons why it checks for admin rights now on your machine.

Kai Koehne says:

Thanks for the report! This is indeed a bug in the opensource installers: It should only require administrative rights if you have not installed the Visual Studio 2013 runtime libraries (vcredist_x86) yet: https://bugreports.qt.io/browse/QTBUG-46837

James says:

Cannot start the Qt installer on Ubuntu 15.04.

qt.network.ssl: QSslSocket: cannot resolve SSLv2_client_method
qt.network.ssl: QSslSocket: cannot resolve SSLv2_server_method
Segmentation fault (core dumped)

FYI, “OpenSSL 1.0.1f 6 Jan 2014” is installed in my Ubuntu.

Kai Koehne Kai Koehne says:

While annoying, the openssl warning is probably not the cause of the crash. I created https://bugreports.qt.io/browse/QTBUG-46840 about this though.

The installer works fine for me though on Kubuntu 15.04 64 bit. Which exact version are you using? Could you create a bug report with your details?

glararan says:

Still can’t resolve error in Qt Quick 2 designer: Cannot Connect to QML Emulation Layer (QML Puppet) – The executable of the QML emulation layer (QML Puppet) may not be responding. Switching to another kit might help.

Reinstall not works. Checkbox to do not use Qt QML emul layer aswell not works.

I have just created basic project.

Jakub says:

Why is libqsqlmysql.so still needs libmysqlclient_r.so.16? I can’t find package with this version of libmysqlclient on Ubuntu, ArchLinux nor any other distro. For a long time there is available so.18 and mariaDB. Why do You link MySQL driver with such an old library?

Soham says:

Congrats Qt team for the update, can’t wait to try out this version!

elderorb says:

Why there is no online packages for RC this time?

@elderorb: Because of a dependency that might have been a risk. For this reason we made RC offline only.

elderorb says:

Why there is no RC packages available via ‘maintenance tool’ this time?

elderorb says:

Why there is no RC packages available via ‘maintain Qt’ this time?

elderorb says:

I beg pardon for multiple comments, for some reasons ‘post comment’ button didn’t add anything first couple times

@elderob: No worries, it is good to have comments to this post as well 🙂

BastiBen says:

I’m a paying indie developer, and would like to test/debug my software using the 5.5 RC. Unfortunately my app depends on some features that are only available in the commercial Qt. So right now I’m stranded and I have to hope for a hopefully flaw-free final Qt 5.5 release. :'(

Yuchen Deng says:

The code.qt.io repository is so slowly for Chinese user. could you please give a attention for that?

Commenting closed.

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