QML and Qt Quick

I think you should wrap your struct in an QObject-derived class, and then register this class to QML engine so that you can instantiate the class in QML. You can create a method, which is callable in QML, in the class to assign values to your struct via QML code.

Thanks lemourin, Eventually I got it working a while back, but it was not a nice experience writing lots of nasty c++ to get around the lack of public API for doing this and has been captured by the following bug. https://bugreports.qt-project.org/browse/QTBUG-31989

I think it's reading it as javascript not as part of the delegate. I think you might want to change the role used by the delegate by doing something like: styleData.role = "number" This seems to not be very well documented. I inferred this from these two sources: http://stackoverflow.com/questions/22874387/qml-tableview-access-model-properties-from-delegate http://qt-project.org/doc/qt-5/qml-qtquick-controls-tableview.html#itemDelegate-prop

Solved, the above code was OK ! My test model data was wrong : It had minimum and maximum swapped (min =100, max = -100). Doh! This had the effect that I could edit the existing value (that was out of range) without limits, but after deleting all characters i could not enter anything. Oh well, above code may be useful to someone, it works fine when fed with the correct parameters ;-).

Ok, thanks. That worked.

Any update on this with the new Qt 5.3?

Hi, I think you can use a "sequentialanimation":http://qt-project.org/doc/qt-5/qml-qtquick-sequentialanimation.html and a "scriptaction":http://qt-project.org/doc/qt-5/qml-qtquick-scriptaction.html here.

Thanks man, just the link I needed :-)

By plain window, I assume you mean QML being wrapped into an Item { ... } element rather than ApplicationWindow , as well as using QQuickView to handle the window from the C++ side? It did not change anything, but I notice that the clicked event fires off if I click where the button is supposed to be, so it's at least there, just seems like it becomes invisible or put behind the QQUickItem GL window. The button works fine in the openglunderqml example, I copied the Squircle code over to my project and noticed that the button would still not draw unless I did not change the QSurfaceFormat like so: @int main(int argc, char **argv) { QGuiApplication app(argc, argv); QSurfaceFormat format; format.setSamples(16); format.setOption(QSurfaceFormat::DebugContext); format.setMajorVersion(3); format.setMinorVersion(3); format.setProfile&#40;QSurfaceFormat::CoreProfile&#41;; qmlRegisterType<Squircle>("SimpleLOS", 1, 0, "Overlay"); AppView view; view.setResizeMode(QQuickView::SizeRootObjectToView); view.setSource(QUrl("qrc:////content/gui/main.qml")); //view.setFormat(format); view.show(); return app.exec(); }@ Setting up my normal scene again without changing the QSurfaceFormat does not show the button, but at least I can be fairly certain that the issue has to be with the context or something similar.

It's also a solution but you have to know your screen dimensions. With QDesktopWidget you ensure that you are in a valid geometry and don't need to know your screen size.

You're welcome ! If this solves your problem, then please update the thread title prepending [solved] so other forum users may know a solution has been found :)

Thanks Vincent, for the suggestion to use qabstractitemmodel. It looks suitable. When I find the time, I'll try this too, it may be more efficient.

Using a software opengl renderer doesnt sound like a good solution to me. I cant see how it would improve performance over 4.8. Im starting to think that QML in any form is too heavy for this ARM SoC. No matter what i try, i just cant get anything close to acceptable graphics performance.