3rd Party Software

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  UNSOLVED Including protobuf to Qt
  • Ryna  

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  UNSOLVED Can qt integrate with software developed by tk
  • fangyu  

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  Hi, and welcome! @fangyu said in Can qt integrate with software developed by tk: I have a program written in tk, and I want to access its window through qt. Can you describe what you mean by "access its window through Qt"? Are you trying to control the other window from a Qt application? Can be obtained through "findwindows" in the windows system, so is there a similar API in the ubuntu system. You could get the window ID (see https://stackoverflow.com/questions/151407/how-to-get-an-x11-window-from-a-process-id for example), and then call QWindow::fromWinId() (see https://doc.qt.io/qt-5/qwindow.html#fromWinId) However, this is not properly supported so you might not be able to do everything you want. can qt integrate with the software developed by tk? Not directly.
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  UNSOLVED QT and OpenCascade
  • JRomero  

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  @JRomero Hi No that should be it. When it crash from very start its off DLL related. Are you sure whatever OpenCascade DLLs you are using are for the compiler you are using for the app?
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  SOLVED Facing linking libs on linux platform
  • jineshmehta  

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  @jineshmehta Hi Yes that was what i meant. maybe badly explained. In linux, even the actual file name does start with libXX, then you do not included when used as link name. and just use XX
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  UNSOLVED How to Display the Camera Image from the third party SDK.
  • kabdul  

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  Hi, As a first step, use this QImage constructor to create a QImage object that you will set on a QLabel. Once you have that, then you'll be able to go further.
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  UNSOLVED If QT5.15.0 still needs ICU?
  • naeco2005  

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  @naeco2005 Looks like ICU is optional, see https://doc.qt.io/qt-5/windows-requirements.html#icu Also, if you have a commertial license you can ask QtCompany for support.
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  SOLVED if QT5.15.0 works with openssl 1.1.1g?
  • naeco2005  

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  Many thanks for the confirmation.
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  UNSOLVED Qt third parties libraries version query
  • m.manirul  

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  @m-manirul You really expect exact answer for each of these libs?! Why do you actually want to know that? For most of these libs many versions will work, so how can anybody give you an exact answer? Just try to build for your system. The only important part here is OpenSSL, I think for Qt 5.5 you need v1.0.x HTTPS is not a lib but encrypted HTTP. See also https://wiki.qt.io/Qt_5.5_Tools_and_Versions
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  UNSOLVED Build OPCUA secure connection function with QtOpcUa and 3rd party Open62541 backend
  • Yichuan  

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  SOLVED Why is it invalid to generate the target filename when you change the makefile XML_NAME to xml2d?
  • mirro  

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  Hi, You should give more details about what you are doing, what this is about, what OS you are running, in what way is it related to Qt, etc.
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  UNSOLVED Qt License query
  • msg2arc  

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  @msg2arc said in Qt License query: we intend to distribute wireshark soure code to end customer as per GPLv2. I guess you need to be prepared to distribute the source code of "changed" wireshark to anyone who ask for it, not just your customer. But I'm not a lawyer.
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  UNSOLVED QT5 + BGFX integration
  • Petr Petrov  

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  Hey Petr, did you ever find the problems of your integration? I tried it and could reproduce the flickering only when using DX9. OpenGL, Vulkan and DX11 worked very well. Also: did you ever look into integrating BGFX into a QtQuick application? I just tried it by altering the Scene Graph - OpenGL Under QML example but failed miserably. My attempt can be found here: https://github.com/jfabert/BGFX_QML Do you think you can take a look? Looking forward to a reply best Jonas
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  UNSOLVED easy way to develop ubuntu touch app
  • abuabdellah  

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  @abuabdellah From http://ppa.launchpad.net/ubuntu-sdk-team/ppa/ubuntu/dists/ I can see that Ubuntu 19.10 (eoan) is not supported. It looks like latest Ubuntu version there is 17.04. I'm not even sure Ubuntu Touch is still in development? I was thinking it was stopped by Canonical.
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  SOLVED why Qt can't find 3rd-party libs?
  • r3d9u11  

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  Thanks for the feedback !
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  UNSOLVED Hi,I have a question.
  • AndrewShih  

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  @SGaist Thank you for your reply :) I will try it. Thank you for your advise!
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  UNSOLVED Drawing image with 3'rd party library.
  • LuckyGg  

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  @LuckyGg Hi,I have a question. How to use Open eVision library in Qt? Please give me an advice. Thank you.
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  UNSOLVED Running VBA macro Script from inside of Qt
  • laurirombo  

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  UNSOLVED qtopcua 5.14 openssl errors after uptate
  • PawelW  

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  Hi and welcome to devnet, Do you have OpenSSL available on your machine ? If so, which version ? How are you building that module ?
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  [SOLVED] Error SendInput() to emulate keyboard events! Has anyone done this in Qt windows?
  • vezprog  

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  @dbzhang800 said in [SOLVED] Error SendInput() to emulate keyboard events! Has anyone done this in Qt windows?: You can give a try to @ LIBS += -luser32 @ not working for me.
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  UNSOLVED QT and GDAL , no errors but the console application not showing anything
  • QT_plt  

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  thanks for the zour answer , after checking the ".exe "file i found that the execution in fact had some errors due to missed DLLs , thats why in included the missed ones inside the solution file beside the ".exe" and it worked
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  SOLVED QT and GDAL linking issue
  • QT_plt  

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  hi all thank zou for participating , actually when creating the project there was a checkbox for the prefixes , by creating a new project and un-checking that the problem was solved
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  UNSOLVED FLex including <iostream.h>
  • _ove_  

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  @_ove_ Hey, how r u doing? To keep flex and bison files out of project and source control. Generate the C source files and add it to project. Add flex and bison files to project, but run flex and bison commands separately. Integrate properly with IDE (Qt Creator on Ubuntu 12.04) and source control, so that when I build the flex and bison is called to generate lexer and parser. I obviously want third option, but have no idea how to do it. Please suggest the best option and the way to do it.
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  UNSOLVED Intel MKL and Qt in Visual C++ 2017 - feature-test macro must be a simple identifier error
  • J Palmer  

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  SOLVED Using qscintilla2_qt5 suddenly occurs undefined reference.
  • Gerald.L.  

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  @Gerald-L Part of Boost is header only (without library files), for these parts you do not have to add anything to LIBS. Also there are system wide directories containing header files and libraries which you do not have to specify (/usr/include, /usr/lib).
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  UNSOLVED Using Fortify SCA (not outdated “HP Fortify”) on Qt code
  • TheBubbleman  

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  To create a new one, copy the one you are using and give it a new name.
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  UNSOLVED error while adding catkin package
  • Developer01  

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  Hi and welcome to devnet, Where is the findcatkin.cmake script located ?
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  SOLVED Incompatible version of OpenSSL With Qt 5.12.2
  • lNarthan  

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  @lNarthan as @SGaist said, OpenSSL 1.1 is default since 5.12.4 For each version below see this
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  This topic is deleted!
  • Mar_60  

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  This topic is deleted!
  • artwaw  

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  SOLVED Link Qt program with DLLs
  • Tiago M.Pinto  

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  @Tiago-M-Pinto said in Link Qt program with DLLs: Could it be a compiler version issue? @sierdzio already told you that only msvc2017 and 2019 are binary compatible. So recompile your lib with 2107 or 2019 and see if it still crashes - if it is the case take a look at the backtrace to see what goes wrong.
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  UNSOLVED SQLite database locked on localstorage example
  • filipdns  

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  @filipdns said in SQLite database locked on localstorage example: Following documentation, js transactions are suppose to automatically close db. Why do you work on DB in JavaScript/QML? I think it will made more sense to do the DB work on C++ side and implement a QML/C++ interface to access to the data. JS/QML is powerful to create/handle user interface, but to work with data C++ is the better choice!
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  SOLVED Qwt plot inside QDialog inside QWidget?
  qwidget qdialog qwt parent • • pauledd  

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  ok, stupid me! I forgot to include Qwt in the *.pro file: ... CONFIG += qwt INCLUDEPATH +="/usr/include/qwt" LIBS += -L/usr/lib -lqwt
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  UNSOLVED Build QtOpcUa with open62541 and encryption support
  • niodo  

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  Hi and welcome to devnet, Please don't post the same question in multiple sub forums. Moderators can move them if needed. Closing this one as duplicate
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  UNSOLVED Boost Unit Test Problems
  boost • • Conical  

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  @Conical The INCLUDEPATH seems to be correct. At least what you are showing. I do not know the test library feature of boost. However, I know that some features require separate compilation which will create libraries. This would be for the regular expression of boost for instance. Those libraries need to be referenced with LIBS statement. https://doc.qt.io/qt-5/qmake-variable-reference.html#libs
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  SOLVED unable to use function MATCH in the requested context SQLite?
  • filipdns  

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  @JonB Hello, Yes I just found what you say and solve with: SELECT * FROM remainPartList_log WHERE part LIKE '%art%' thank you very much
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  UNSOLVED Performance Analysis Tool for Qt on Windows
  • Laurent Schall  

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  Do you use Visual Studio as compiler? That environment has such a tool embedded
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  UNSOLVED Openldap connector for Qt in particular or Cpp in general......
  • alamahant  

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  Hi, No there's not. You can use the OpenLDAP library to interact your your LDAP server. At some point, there was the Luma GUI application.
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  SOLVED QT and Matlab
  • alberto.brunero  

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  @aha_1980 said in QT and Matlab: @jsulm said in QT and Matlab: @alberto-brunero To add to @SGaist : on Windows LIBS syntax is different: LIBS += "C:/Program Files/MATLAB/R2019b/extern/lib/win64/mingw64/libeng.lib" That is not true. The correct way is to use -L... -l... on Windows too, as Creator then sets up the library search path for you. Also, you should use / instead of \ in pro files, even on Windows. I fully agree to that. Also, by all means avoid spaces in paths. Agree with @aha_1980 about -L..., -l..., and / on Windows. Spaces in LIBS are quite safe though; just wrap the path in double quotes: LIBS += \ -L"C:/Program Files/MATLAB/R2019b/extern/lib/win64/mingw64/" -llibeng
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  UNSOLVED Unresolved external symbol _strerror_r error while executing libcurl with QT
  • Ace04  

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  @Ace04 said in Unresolved external symbol _strerror_r error while executing libcurl with QT: LIBS += -L"$$PRO_FILE_PWD/dependencies/SSL/lib/" libcrypto.a libssl.a Your LIBS lines are wrong. Correct would be: LIBS += -L"$$_PRO_FILE_PWD_/dependencies/SSL/lib" -lcrypto -lssl (Add -l, omit lib... and .a. Also, convert all backslashes to forward slashes. Also, remove all trailing slashes from the paths (INCLUDEPATH and LIBS) Regards.
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  UNSOLVED How to build fbx geometry loader ?
  • MaximeTouchline  

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  There should also be a folder with the tests that ran. That's the one I am suggesting to check. Note that there seems to be some mixing of forward and backward slash which might explain the failure. Use all forward slashes when giving parameters.