Skip to content

3rd Party Software

Combining Qt with 3rd party libraries or components? Ask here!
1.1k Topics 5.5k Posts
  • Event loop in DLL steal events

    1
    0 Votes
    1 Posts
    863 Views
    No one has replied
  • [SOLVED] QT Serial Communication with Beaglebone

    22
    0 Votes
    22 Posts
    12k Views
    S

    @
    /usr/local/angstrom/arm/lib/gcc/arm-angstrom-linux-gnueabi/4.3.3/../../../../arm-angstrom-linux-gnueabi/bin/ld: cannot find -lQtGui
    collect2: ld returned 1 exit status
    @
    the linker can't find QtGui because in follow directory you should have
    QT library and I don't why qt qmake didn't even provide the path of lib maybe you should recall qmake
    @
    /usr/local/angstrom/arm/arm-angstrom-linux-gnueabi/usr/lib
    @

  • 0 Votes
    3 Posts
    2k Views
    I

    Thank you for the answer sierdzio :) I will look at that method and see if it works. Sounds like it should be relatively easy to implement.

  • 0 Votes
    9 Posts
    3k Views
    L

    faulty usb to serial cable.

  • 0 Votes
    5 Posts
    2k Views
    ?

    [quote author="SGaist" date="1390429607"]The bug report being pretty old, you should maybe bump it[/quote]

    Hey,
    Yes the bug report is very old. May be its time to restart it :).

    Best Regards,
    Ansif

  • 0 Votes
    4 Posts
    1k Views
    K

    closing this duplicate here

  • 0 Votes
    7 Posts
    4k Views
    T

    Thank you for the advices. I've bypassed the error by using C++ standard file IO. Nevertheless there is some problems with QFile. To identify if this is really a glitch, I'll come back and check this out step-wise once I finish my main project.

  • Build issues in Qt4 with Poppler library

    6
    0 Votes
    6 Posts
    3k Views
    ?

    Greetings!!!!!!!!!!!!!!!

    Finally i succeeded to build the Qt4-Poppler library in Mingw32 compiler.

    I checked the usage of Poppler library in TexWork Project and it really helps me to solve my problem.

    check these link:
    https://code.google.com/p/texworks/wiki/BuildingOnWindowsMinGW#Directory_structure

  • 0 Votes
    2 Posts
    2k Views
    _

    Not absolutely sure but this is what so far is working:

    What needs to happen is that the projectname.pro file needs to be edited in order to add a projectname.ts without the localization id string. (See first line in the code snippet below).

    @
    TRANSLATIONS += share/translations/projectname.ts
    share/translations/projectname_ru.ts
    share/translations/projectname_uk.ts
    share/translations/projectname_de.ts
    @
    Then run lupdate projectname.pro in directory share/translations (or whatever your path is).

    This will generate all the .ts files including the new projectname.ts file. This file contains both source and translation strings in the original language, i.e.
    <source></source> and <translation></translation> tags will contain the same string in the same language.

    Then you can point Transifex to a static URL of this projectname.ts on your repository which will autoupdate it on Transifex and regenerate any other translation you have set up for the project.

    Solution attributed to this "thread":https://bitbucket.org/dismine/valentina/issue/55/translations-uploaded-to-transifex#comment-7800950

  • Using qTUIO library with QT 5.2

    1
    0 Votes
    1 Posts
    981 Views
    No one has replied
  • Problem with QtSerialPort on Windows

    10
    0 Votes
    10 Posts
    10k Views
    M

    @kuzulls

    And I already said, what you suggested didn't fix the problem. :) I also tried the fix you gave for the reader program, and it actually did start working, and it also still works so that it makes the writer program work afterwards until usb cable is removed. But it doesn't solve the problem I need help with. The writer program (first piece of code) has to work without the reader program (second piece of code).

    Inspired from the fixes, I also attempted having one waitForReadRead call with long timeout before trying to write there, but this didn't solve the problem which is, the device does not receive (or does not receive correctly) what I'm trying to send there unless I run the second piece of code first.

    As for it being sync'd or async'd, it doesn't matter at this point. Purpose of this program / project at this stage is to get the connection to device to work for writing, it's okay if the program has to wait for the connection. Also it's worthwhile to mention (like I mentioned in OP) that this works in other environments than windows flawlessly, even with the "flawed" code I have now fixed (without seeing any changes in results really).

  • Qt + GDAL Library

    7
    0 Votes
    7 Posts
    12k Views
    S

    Hi SGaist,

    I see. Thanks a lot

  • 0 Votes
    5 Posts
    2k Views
    rincewindR

    I posted a question on their website. I am going to purchase licenses, so the issue is just if the source is supplied and how easy it is to rebuild myself, hopefully no strange dependencies, only Qt. Or if they will provide me with a different version compiled with MinGW 4.8.1.

    Thanks for the response!

  • [Qt 5.2 msvc x64] QMYSQL invalid driver handle

    7
    0 Votes
    7 Posts
    3k Views
    D

    I've used this patch/diff from post above on QT 5.2. Then I've recompiled QT and seems working, but I have to made some tests to make sure that everything is fine. konserw if you want you can email to me

    KR Dawid

  • 0 Votes
    2 Posts
    6k Views
    SGaistS

    Hi,

    I would say that the path you give to OpenCV is invalid. Qt uses Unix style path internally on all platforms but not OpenCV.

    Use QDir::toNativeSeparators and it should work better.

  • Class in DLL doesnt work properly

    5
    0 Votes
    5 Posts
    2k Views
    G

    Thanks for the replies.

    I figure out the solution. My MINGW g++.exe in codeblocks was 4.7, and the MINGW g++.exe in QT was 4.8, so I changed all the toolchains in codeblocks with those from QT and everything works fine now.

    G.C.

  • 0 Votes
    1 Posts
    1k Views
    No one has replied
  • QtSerialPort: QByteArray

    13
    0 Votes
    13 Posts
    24k Views
    K

    Hi. You should implement a some StateMachine object which will do parse of received data. You can read about state machines here: http://en.wikipedia.org/wiki/Automata-based_programming or try to search in google.

  • Qwt 6.1 legend duplication

    4
    0 Votes
    4 Posts
    2k Views
    K

    @alex2323
    welcome to devnet

    I have added "code wrappings (please see forum help)":http://qt-project.org/wiki/ForumHelp#e3f82045ad0f480d3fb9e0ac2d58fb01 to your original post. Please use them next time you have a code section in your post.

  • Tab component

    2
    0 Votes
    2 Posts
    904 Views
    A

    So... what's your question? And how are we supposed to answer it without seeing your code?