QML and Qt Quick

Someone pointed me to the TableViewDelegate; I switched to that since it comes with the functionality that I need.

Hi, What kind of example do you have in mind ? How to use OpenCV ? How to grab an image with Qt and apply OpenCV operations on it ?

im using Qt Charts , you think i can find a way with Qt Graphs ?

Thanks for your answer. In meanwhile I was able to solve this problem. I think it was related to the singleton. The QtObject blub was in a singleton-qml-module. Now I moved this QtObject to the main-qml-module. Now the copy is much faster and it does not get slower.

@Bob64 Thanks for the detailed reply!

Why dont you use https://doc.qt.io/qt-6/qml-qtquick-vectorimage-vectorimage.html

@jsulm That makes sense! Also, you are damn fast, thank you for reviewing my message!

Oh ! Great ! Smple solution :-) Since you have it working now, please mark the thread as solved using the "Topic Tools" button or the three dotted menu beside the answer you deem correct so other forum users may know a solution has been found :-)

That's useful. Thanks!

@JKSH said in Qt6: the Qt.labs.qmlmodels library is not imported.: The auto-completer might not see the module for some reason, but you can type it out manually. Does that work? Yes, it works! The TableModelColumn now has syntax highlighting! Thank you very much! @JKSH said in Qt6: the Qt.labs.qmlmodels library is not imported.: We recommend omitting the version number. Just write import Qt.labs.qmlmodels Fixed it.

Same issue in Qt6.9.2 on Windows 10 IoT 企业版 LTSC 19044.1288

@gsal said in TableView refuses to show in the UI: I am at a loss, here, any hints? tests? Look for the usual stuff. In no particular order: Remove everything believed to be extraneous (window titles, scroll bars, unused imports, non-trivial dummy data, ...), until the problem goes away. Reintroduce the last change, and remove everything else extraneous. Keep going until the absolute minimum is reached. Post that if the answer still isn't obvious. Check the return value of functions, and the existence/lifetime of objects. Does XYZTableModel refer to a valid object? Does QUrl.fromLocalFile(filename) return the expected url? Does the content of the url's target match what is expected? QML and Qt in general has a bias toward types starting with an upper case letter, and properties starting with lower case. Violating that custom can have unexpected results. (There are exceptional cases...) Turn on categorized logging and run the program via something that logs or displays standard error. Avoid context properties.

This would be easier to discuss with a minimal working example. There's a lot of room for misinterpretation with natural language. In general, the QML engine invokes a property setter during initialization on assignment any time a component of a binding emits a changed signal It's the responsibility of property setters to recognize and ignore duplicate or otherwise invalid inputs. class Object : public QObject { Q_OBJECT Q_PROPERTY(int prop MEMBER m_prop WRITE setProp NOTIFY propChanged) int m_prop = 1; int m_max = 5; signals: void propChanged(); public: void setProp(int newValue) { if (newValue == m_prop || newValue > m_max) return; m_prop = newValue; emit propChanged(); } };

@QtTester, I think I'd misunderstood, too... Thanks.

@dheerendra can you show some demo source? I don't konw how to write qml plugin and use the component in app.qml, thank you .

Hi, and welcome! @Lopher said in Qt6.8 + CMake : <Unknown File>: No module named "IMClient" found: I'm uncertain whether this is a sustainable solution and if it aligns with proper practices." For the cleanest solution: Use qt_standard_project_setup(REQUIRES 6.8) in your top-level CMakeLists.txt -- this automatically applies QTP0001 and QTP0004, so you don't need to set them manually Don't set a custom RESOURCE_PREFIX Don't call addImportPath() Don't put your QML files on a specific place on disk -- let your app load it from the embedded resources instead Give your main *.qml file a name that starts with an uppercase letter (so Login.qml, not login.qml) Now, you can call engine.loadFromModule("IMClientQml", "Login"); Note: The whole point of introducing QTP0001 was to avoid the need for RESOURCE_PREFIX and addImportPath() For further troubleshooting, call the following and inspect the output: qDebug() << "Import paths:" << engine.importPaths(); qDebug("### Resources ###"); QDirIterator qrc(":", QDirIterator::Subdirectories); while(qrc.hasNext()) qDebug() << qrc.next();

@Lopher said in Qt6.8 + CMake: QML components cannot find qrc resources built by qt_add_resources: Cannot open: qrc:/icons/close.svg Because they are not there as you can see here: qt_add_resources(IMClientResources "IMClientSvg" PREFIX "/icons" FILES resources/images/close.svg They are in :/icons/resources/images/close.svg