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Using Qt Add-ons

  • Hi,

    I've been looking for many hours (days?) in vain. I'd like to use some add-ons for qt 5 alpha/beta especially the bluetooth one. Tho I can't get any information on how to download/install those addons. Does anyone know how to do so ?

  • I don't know what "add-ons" you need, but I have built qt5 from git and there is a modul called


    there are example for bluetooth in the directory.

    See allso the Project-File in the examples cause you have to configure QT to use the modul (QT += concurrent bluetooth widgets)

    hope this helps

    best regards

  • Yep seems like "qtconnectivity" is exactly what I need ! Thank you !
    I was looking for something like qtbluetooth at first, this is why I couldn't find it , plus It's in the beta version, not in the alpha contrary to what is said there:

    So basically there's nothing special to do since qtconnectivity is already included in the beta package. Can't see the difference between Essentials and Add ons then...

    Though I have issues while running the configure and build :/ Still working on that... Did it happened to you as well Harry ?

  • I had no problems by compiling, I'm running Opensuse 12.2 64Bit with gcc 4.7.
    First time when I tried to compile i had some dev-Packages not installed, after installating them, there where no problems.

  • Hello !

    I'm trying to use qtconnectivity add-on in Qt creator but it's not working. I have built qt5 from git but Qt creator displays this error message:
    @Unknown module(s) in QT: bluetooth@

    I only added this following line to my .pro file:
    @QT += bluetooth@

    Does anyone of you know why ? I'm using Qtcreator 2.8.1 based on Qt 5.1.1 in Ubuntu 12.04.3.

    Thanks in advance guys,
    Best regard,

  • Moderators


    Qt Bluetooth is released with Qt 5.2. Update your git repository (make sure you also get qtconnectivity.git) and build, or just download and install the Qt 5.2 beta from

  • Thank you for your answer, I installed Qt 5.2 with .run file. And now when I'm trying to compile my project with Qt creator (here is my version):

    @Qt Creator 2.8.82 (3.0.0-beta)
    Basé sur Qt 5.2.0 (GCC 4.6.1, 32 bit)
    Compilé le Oct 22 2013 à 16:29:33
    Depuis la révision f5fa022de5@

    The compiler seems to find Bluetooth library but I have some problem with udev:

    @cannot find -ludev@

    /!\ SOLVED : The name of the repository to install is "libudev-dev". (for ubuntu just type "sudo apt-get install libudev-dev"). Thank you strahlex !

    And I don't have this problem with the other version of Qtcreator (using Qt5.1.1 libraries). I don't think the problem come from my code maybe it come from my .pro file:
    @#TEMPLATE = app
    #TARGET =
    #DEPENDPATH += .


    HEADERS += MainWin.h
    SOURCES += main.cpp MainWin.cpp
    QT += core gui serialport bluetooth
    greaterThan(QT_MAJOR_VERSION, 4): QT += widgets@

    I will try to update and build my git repository. If you have any idea I will be really glad to read your solutions. ;)

    Anyway thanks for your help and your reactivity.

  • @Sanctlon: Install libudev-dev from your software repos.

    In this repo:
    is a QtConnectivity module with Android support. How can I build it for Qt 5.2 RC1?

  • @strahlex: Ok, it's working very well, thank you ! For adding a module I never succeed build a module correctly, and I supose that the Maintenance Tool can't help you ?

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