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Qt Development

Everything development. From desktop and mobile to cloud. Games, tools, 3rd party libraries. Everything.
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  • This is where all the desktop OS and general Qt questions belong.
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    K
    I am facing a similar issue with a QDialog. Touch clicks on pushbuttons does not work some times however the mouse clicks function properly. It is also tnoted that if the dialog window is resized by dragging the window edges the touch clicks are accepted. On catching the QEvent::TouchBegin it is seen that the position() returns the same QPointF as the screenPos() that is the event point is not translated into the widget co-ordinates. On printing the event position it was found that the touch

  • The forum for developing everything embedded: Linux, WinCE, Symbian, MeeGo... you name it.
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    NihilishN
    @JKSH Thank you, this is exactly what I'm seeing. As a workaround before we migrate to Qt 6, we tried removing this flag AA_EnableHighDpiScaling and while it does get rid of the white line, it breaks other things

  • Looking for The Bling Thing(tm)? Post here!
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    @Nisha_R said in How to access the cover image of mp3 file from its metadata in QML?: what has to be assigned to image source to access its embedded cover image from its metadata What value should be set as the image source to display the embedded cover image from its metadata?

  • Have a question about Qt Creator, our cross-platform IDE, or any of the other tools? Ask here!
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    JonBJ
    @AntGP Still not sure what exactly your issue is. For, say, adding "a single box" or some other UI element to an existing project you have a choice of using Designer to produce code or writing the code directly yourself to create UI elements. As for interfacing with C++, if you use Designer from Creator you have that integration.

  • Your Qt just doesn't want to build? Your compiler can't find the libs? Here's where you find comfort and understanding. And help.
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    Hi I have a problem I want to create a desktop shortcut for my application I don’t know why it does not work here is my install script.qs function Component() {} Component.prototype.createOperations = function() { component.createOperations(); component.addOperation( "CreateShortcut", "@TargetDir@/notepad.exe", "@DesktopDir@/My App.lnk" ); }

  • What can we say - we like games. And you can use Qt to write some. Questions? Ask here.
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    Hi everyone, I'm currently working on a small hobby project inspired by "Totally Accurate Battle Simulator" but adapted for mobile devices using Qt 6 and QML. The working title is TABS Pocket Edition — it's just a fun prototype to test ragdoll physics, AI pathfinding, and multiplayer sync in a mobile context. One challenge I'm facing right now is optimizing the physics simulation when multiple ragdoll entities are colliding in close proximity. On some devices, the frame rate drops significantly once there are more than ~20 active units. So far, I've tried: Reducing the physics tick rate from 60Hz to 30Hz. Switching from per-bone collision to simplified capsule colliders. Disabling physics for off-screen units. These help a bit, but large battles still cause spikes. My questions: Has anyone implemented ragdoll physics efficiently in Qt/QML for mobile? Is there a way to offload part of the simulation or use a hybrid approach between keyframe animation and real physics? If anyone wants to see the current prototype in action, I've uploaded a playable build here: https://modhello.com/tabs-pocket-edition Thanks in advance for any tips!

  • Questions about Qt WebKit and related topics? Post here!
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    JonBJ
    @Vbrg So in a word Qt only offers integrated browser with chromium/Qt web engine.

  • Discussions and questions on QtWebEngine
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    @Christian-Ehrlicher Thank you, I compiled the source code as you said, it works

  • You're using Qt with other languages than C++, eh? Post here!
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    PedromixP
    Brand new release QtJambi 6.9.1 is out now🥂. Create sophisticated Java apps for Desktop and Mobile or refactor your legacy code using Qt as UI framework! https://www.qtjambi.io [image: cb78556c-b761-467b-b005-119e3643175c.png]

  • Combining Qt with 3rd party libraries or components? Ask here!
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    S
    you shoule choose Quick Scenes> Items. [image: 171d9f7c-ca85-4766-9747-fde06ca3a995.png]

  • For discussion and questions about Qt for Python (PySide & Shiboken)

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    @JonB Thanks for the suggestion. That kinda seems to work and the checkbox is no longer overlapped with the text, but the resizeColumnstoContents() still seems to be taking into account of only the size of the text and I'm not sure how to recalculate that as I dont see sectionSizeHint() or sectionSize() being called. I added this right before the super() call: if logicalIndex in self.checkboxes: rect.adjust(23, 0, 0, 0) [image: 28b099a9-8165-4bc2-9547-74044338bd8e.png]

  • Specific issues when using Qt for WebAssembly

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    KyefK
    Thank you @jsulm for the response. Here is my CMakeLists.txt below: CMakeLists.txt cmake_minimum_required(VERSION 3.16) project(demoApp VERSION 0.1 LANGUAGES CXX) set(CMAKE_CXX_STANDARD_REQUIRED ON) set(CMAKE_AUTOMOC ON) set(QT_QML_GENERATE_QMLLS_INI ON) find_package(Qt6 6.4 REQUIRED COMPONENTS Quick Network Sql WebSockets ) # find_package(MySQL REQUIRED) qt_standard_project_setup(REQUIRES 6.4) qt_policy(SET QTP0001 NEW) qt_add_executable(appdemoApp main.cpp ) qt_add_qml_module(appdemoApp URI demoApp VERSION 1.0 RESOURCE_PREFIX / SOURCES mainworker.h mainworker.cpp applogger.h applogger.cpp icons/Resource.qrc QML_FILES Main.qml Login.qml Userreg.qml ) # Qt for iOS sets MACOSX_BUNDLE_GUI_IDENTIFIER automatically since Qt 6.1. # If you are developing for iOS or macOS you should consider setting an # explicit, fixed bundle identifier manually though. set_target_properties(appdemoApp PROPERTIES # MACOSX_BUNDLE_GUI_IDENTIFIER com.example.appdemoApp MACOSX_BUNDLE_BUNDLE_VERSION ${PROJECT_VERSION} MACOSX_BUNDLE_SHORT_VERSION_STRING ${PROJECT_VERSION_MAJOR}.${PROJECT_VERSION_MINOR} MACOSX_BUNDLE TRUE WIN32_EXECUTABLE TRUE ) target_link_libraries(appdemoApp PRIVATE Qt6::Quick PRIVATE Qt6::Network PRIVATE Qt6::Sql PRIVATE Qt6::WebSockets ) include(GNUInstallDirs) install(TARGETS appdemoApp BUNDLE DESTINATION . LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR} RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR} ) I was thinking I could be linking to a wrong library and mysql include directory however, Cmake runs the configurations very well and indicated MYSQL:MYSQL is found.

  • Discussions and questions about Qt Quick Ultralite and using Qt on microcontrollers in general

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    142 Topics
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    jsulmJ
    @Vishal-Biradar said in Code is getting reset.: But after certain period code is resting means display is getting off again restart Do you mean your app is crashing? The OS is restarting? Please say exactly what happens. Regarding your code: using an endless loop in an event driven application is a no-go...

  • The forum for discussing the Qt Digital Advertising Platform

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    @nayka Can I use QtDigitalAdvertising on PC applications? Or is it only allowed for use on Android or iOS mobile devices?

  • For discussion and questions about Qt Insight

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    jsulmJ
    @Alejandro_qt_ Here is an example how to build qtbase module: https://stackoverflow.com/questions/50022325/building-qt-module-from-source