3rd Party Software

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  SOLVED Concatenating Strings into a Prepared SQLite3 Query
  • scrand  

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  @SGaist, Ok, I think I get where you're both going now. I should have a Database handler class with separate queries for reading and writing each table. No need to over-complicate it by trying to abstract the queries themselves. If I'm honest with myself, I'm probably trying to do that because SQL is like that cute girl in high school who intimidates you a little bit. You're a little afraid to talk to her, and if you do work up the courage, you want to get as much done in that one conversation as possible. :-)
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  UNSOLVED Zlib library error | undefinied reference to
  • Bondrusiek  

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  @bondrusiek said in Zlib library error | undefinied reference to: when I use function from zlib like gzopen Compilator gives error message: undefined reference to 'gzopen' It's the linker complaining indeed... Are you sure you have the shared object for Qt zlib library available? How do you install Qt framework? Is it configured for -qt-zlib? See documentation regarding 3rd party libraries
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  UNSOLVED Drawing image with 3'rd party library.
  • LuckyGg  

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  Thank you for your reply :) so, you mean... 3rd party library to QImage. create subclass from QWidget. I will try it. Thank you for your advise!
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  UNSOLVED Taglib Library
  • Lucas_1603  

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  @jsulm As @raven-worx suggested, I renamed libtag.dll.a to libtag.a and then I tried with LIBS += -l$$PWD/myTaglib/libtag.a as you said but it still didn't work, here is what I got: Even though I had libtag.a in my myTaglib folder but the linker said "cannot find..."
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  UNSOLVED Axis camera RTSP with QMediaPlayer issue
  • Vloois  

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  Looks like you are trying to link against something built for 64 bit while building your application is built in 32bits.
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  UNSOLVED QSslSocket Test Failures (Do I have an Invalid Qt/OpenSSL Configuration?)
  • crash_test  

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  Since you have the Docker-compose file, you can directly build the test server. Maybe just launch it before starting the test suit.
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  UNSOLVED QT cross compilation on raspberry pi
  • Alphy  

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  UNSOLVED Design Qt GUI for CLIPS expert systems
  • Bryan Chua  

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  Sorry for the late reply, CLIPS is a rule-based programming language, its interface "clips v6.4" is a command-line interface. So my task is to design a Qt GUI to better represent the output from CLIPS. Currently, I am facing issues with the importing of clips library into Qt VS. In sourceforge, a CLIPSwrapped library is provided, however, I am not sure how to "import" this wrapped library in Qt VS such that I can call the CLIPS functions in my Qt main.cpp. Please let me know on what I should do. Thank you.
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  UNSOLVED How to add a label to a layer in QCustomplot?
  • Muralidharan  

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  UNSOLVED qt with glut/freeglut
  • gtx0908  

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  but that is where i put it
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  UNSOLVED Multiple build for a versions
  • Waqar  

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  Hi, This the source package, you have to built it in order to use it MinGW build Visual Studio 2008 build Visual Studio 2010 build You can use 1 after you built it, and 3 to 4 directly in Qt Creator provided that you installed the corresponding compilers. Yes, you can have multiple versions of Qt in parallel no problem with that. No, they will not. Up to VS2015, there's no compatibility between Visual Studio versions. VS2017 is the first one that is backward compatible with VS2015. Also note that, if your really need to work with Qt 4, you should at least go with Qt 4.8.7 which is the latest and last version of the 4 series. Even more important, Qt 4 has reached end of life a long time ago, you should rather start with Qt 5.
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  SOLVED Qt Creator IDE debugging Fortran Static Library
  • fem_dev  

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  Sorry, Qt Creator IDE debugger CAN show the current Fortran variables values... I was trying to see a string parameter, but I forgot that is variable type is a pointer to a C string array... All working...all ok...
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  UNSOLVED QWT oscilloscope example help
  • Tamis2018  

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  Exactly, why we have to include this: QWheelEvent wheelEvent( QPoint( 5, 5 ), we->delta(), we->buttons(), we->modifiers(), we->orientation() ); QPoint( 5, 5 ) is pos or global pos? What is pixelDelta? What does mean that it contains the scrolling distance in pixels on screen?
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  UNSOLVED Open62541 OPC UA Reading Node Value
  • henrik2016  

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  SOLVED QT5 + DLL loader (run-time)
  • fem_dev  

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  Hi @fem_dev, I'm flattered, and glad I could help you. Regards
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  UNSOLVED Integrating Qt and Pylon (Basler camera software)
  • colinodowd  

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  @aha_1980 oh, I totally missed that! I try to avoid special chars - that includes spaces - in all paths when possible.
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  SOLVED Building project from QxEntityEditor
  • henrik2016  

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  It's all fine now. I downloaded the library again. After that I used the MinGW compiler and now it works.
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  UNSOLVED Integration Direct3D 12 in Qt
  debug msvc exception directx qt 5.12.3 • • range36rus  

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  @JKSH Yes, I created two simple console applications and added required libraries to them. Compiler keys are identical. I checked carefully. A one project have a mistake, and another doesn't have For example, a project with subprojects have this error, but QT Widgets does not have (but not always). Heisenbug?
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  UNSOLVED how can I get ssl security in gSoap.....................?
  • gregoryjithin  

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  @gregoryjithin The only suggestion (besides the correct one from @Pablo-J-Rogina - why don't you ask in correct forum? Your question/problem has no relation to Qt) I have is to do what the error message suggests: you need the OpenSSL libraries. Download them and put them into same directory where wsdl2h.exe is...
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  UNSOLVED Putting another Widget on top of gstreamer stream
  • qjqj  

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  Hi @SGaist, My .png is also transparent expect the border of the image. For my button I have tried setting the button to transparent using setStyleSheet. It is still the same.
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  UNSOLVED Questions about the QWT BarChart example
  • james b-s  

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  UNSOLVED Changing the separation distance of y-axis labels on a QwtPlot
  • james b-s  

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  Upon further evaluation, the labels are put at the major tick marks, so the real question is how to change the physical spacing of the major tick marks. I'm not displaying the minor tick marks, but it appears that physical space is being allocated for them. I need to eliminate this physical spacing.
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  UNSOLVED Gdal library compilation related on qt5
  • janaki  

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  Hi, Your question is not really clear, what exactly do you want to build ? GDAL itself ? An application using both Qt and GDAL ?
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  SOLVED Deploying project with OpenCV and FFMPEG Error
  • Clarky  

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  Managed to fix this by using: install_name_tool -change /usr/local/lib/gcc/8/libgcc_s.1.dylib @executable_path/../Frameworks/libgcc_s.1.dylib /Applications/myApp.app/Contents/Frameworks/libgomp.1.dylib libgomp.1.dylib was originally pointing to an older version of gcc inside /usr/local/lib/gcc Thanks for your help!
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  UNSOLVED charconv file not found
  • Izza  

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  In that case, you should rather contact the library authors to get help building their library.
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  UNSOLVED Is anyone using Google Protocol Buffers in a cross-platform project?
  • Stokestack  

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  We do using cmake. Do you use cmake?
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  UNSOLVED Integration with Glib event loop
  • Luca Ottaviano  

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  Hi, Yes it is, and IIRC, there's already an implementation of the event dispatcher with Glib.
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  UNSOLVED Qt and gstreamer
  • stephane78 0  

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  Then I would gradually modify the example until it does play the file you are trying to play with your code.
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  UNSOLVED app crash one time on ten using libcurl without any debug info...
  • filipdns  

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  @filipdns Have you run your program under the debugger and looked at the traceback when whatever you mean by "app crash" occurs? Are you under Linux with core dumps? That is always by far the best place to start from. If no core dumps and you can't run under debugger (e.g. it runs unattended overnight), what about putting in extensive but basic logging lines (to file) to see where it's going?
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  UNSOLVED MT4 dll , has anyone had success with this ?
  • Cam Jones  

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  Hi and welcome to devnet, Did check the solution provided by @hskoglund ? What trouble do you have ? Did you check that you have all dependencies needed ?
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  SOLVED OpenSSL 1.1.1 support
  • seb_berlin  

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  Thank you for your help!
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  UNSOLVED Linux, QtCreator and Qt5.9.6 compiling GNU C Libraries
  • MrNickless  

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  Hi @MrNickless, welcome! From your description, the editor problem sounds again like a Clang Code Model problem. You can try to disable it with Help > About Plugins > Clang Code Model. That however, is completely unrelated to compile or run problems. Did I get it right that you can compile the code and it runs on the target, but has runtime problems? Which kind of problems? Regards
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  UNSOLVED Open CV with latest version of Qt creator
  • Vostok-7  

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  Hi and welcome to devnet, Please show the error message you get, your description is not enough.
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  This topic is deleted!
  • CTO_Chris  

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  UNSOLVED Saving the contents of a Qwt widget as SVG
  qwt svg plot vector graphics qtsvg • • onat  

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  UNSOLVED Install Gammaray on windows
  • GrahamLa  

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  @VRonin Hi I have it installed and running now. It only appears to run on exes built in release mode - is this expected?
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  UNSOLVED Visual Studio Qt tools - signal/slot mechanism?
  • jindraSindelar  

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  Okay, I got it running thanks to your help, I'll post my solution for the case anybody will run into similar issues: "main.h": #include <QtWidgets/QWidget> #include "ui_HwMonTool_app.h" #include "PresentLogic.h" class HwMonTool_app : public QWidget { Q_OBJECT public: HwMonTool_app(QWidget *parent = Q_NULLPTR); private: Ui::HwMonTool_appClass ui; CPresentLogic logic; }; "main.cpp": #include "HwMonTool_app.h" HwMonTool_app::HwMonTool_app(QWidget *parent) : QWidget(parent) { ui.setupUi(this); // when adding more signal-slot connections, follow this syntax: connect(ui.pushButton, &QPushButton::released, &(this->logic), &CPresentLogic::buttonPressed); } "PresentationLogic.h": #include "qobject.h" class CPresentLogic : public QObject { Q_OBJECT public: CPresentLogic() {}; ~CPresentLogic() {}; public slots: void buttonPressed(void) { // put breakpoint here while (0); } }; When running this code in debugger and pressing (releasing) the pushButton, the buttonPressed() slot is called. Thanks again for all the help, this topic can now be locked :)
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  UNSOLVED Integrating Pylon into QT Application
  image processin video processin pylon • • jgmills  

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  @JonB I downloaded straight from their site with the only Pylon option so I don't think anything was installed wrong. I will double check with the installer to see if any setting can be changed. I don't see how I can switch between release and debug though since I will get errors compiling on debug, I think I will just try to stay in release. Thank you
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  UNSOLVED Integrate OpenLDAP libraries with Qt windows, android and mac application
  • anji 0  

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  @SGaist Thanks for your help. I'm trying to use the same library across platforms. I found a way to compile the openldap library for mac/iOS version using this link https://www.ibm.com/developerworks/aix/library/au-iphoneapp/?ca=drs- . In the same way I'm trying to find the ways for compiling the library with MSVC and GCC so that the code for connecting, authentication and queries will be same on all the platforms. I know this is out Qt scope but trying to find whether someone succeeded in doing it.
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  UNSOLVED Problem connecting to pylon(basler) camera
  • Pal_ani  

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  It depends on your OS. Since you use the MSVC compiler I guess I can assume its windows. In that case you can add an environment variable from the System/Advanced System Settings/Environment Variables. I'd check the docs for the camera's SDK. There may be other things that need to be set. Does the Windows camera app connect to it ?