QML and Qt Quick

@AnttiK Do you mean: qGuiApp->processEvents(QEventLoop::ExcludeUserInputEvents); The documentation says, that the use of this function is discouraged, that's actually what made me do it the other way. I also tried: this->thread()->eventDispatcher()->processEvents(QEventLoop::ExcludeUserInputEvents); They all seem to work similar. The event get processed, i don't think, this is the problem. I guess, the problem is, that the event is not in the event queue when i want to process them. Initially, i assumed, that the event for rerendering get pushed to the queue as soon as the qml scene changes. But it's not even after QWindow::requestUpdate() present, i have to wait an unspecific amount of time, which feels very wrong to me... Thank you for your timeout suggestion. Yes, i will use something like that to definitely avoid any deadlocks. If i'll actually use my approach in the end... After all, i wonder, how others deal with this very common situation. Because you NEED to do something similar in such a start-up routine. The docs of QEventLoop::processEvents even give the hint to use it in this situation. Maybe it's just a bug, did you test forceUpdateSimple()? Thank you very much!

Almost forgot to paste the qtbug: https://qt-project.atlassian.net/browse/QTBUG-143886 Seems they put it to Critical P1.

@AnttiK said in With Qt 6.10.1 and CMake, configuring a simple QML application fails when source code is in a folder with whitespaces: I'm afraid I'm not too familiar with the Qt sources and how they're organized so I'm far from certain whether my pull request or suggestion would even be considered. Don't be, every contributor had to start somewhere. It does not require a big complicated patch to get on the train :-)

If you know how to calculate the total of your delegates' height, you might want to handle the ScrollBar yourself and set its size and position manually. The position might be trickier to compute.

I don't know why I though update() was a method of the FBO::Renderer. I changed it now, and I'm having the same issue. Image gets temporarily rendered when resizing the widget, and then goes back to blank. EDIT: Oh, actually, it was my own fault. Was calling canvas->flush() which deletes the canvas after drawing. :facepalm:

@JKSH Oh that definitely sounds good

@FishBoneEK said in Need guide on modifying Qt modules: @SGaist I'm considering adding gaps in LineSeries of QtGraphs (with qQNaN() perhaps), instead of using multiple LineSeries. OK, so this is a continuation of https://forum.qt.io/post/836004 As mentioned there, this feature is coming to Qt 6.11 (currently downloadable as a beta) -- please give that a try before editing Qt.

Slightly off-topic: Maybe it's a typo, but Earth's gravity is 9.81 and not 9.18.

https://doc.qt.io/qt-6/qtqml-javascript-hostenvironment.html#type-annotations-and-assertions It says: Note: In QML, enumerations are not types and can therefore not be used as type annotations. Their underlying numeric type, int or double, should be used instead.

Have you tried a HoverHandler?

This behaviour is still not documented (Qt Bug Tracker). The special modifier handling is implemented in QWindowsPointerHandler::translateMouseWheelEvent. A WM_MOUSEWHEEL event is treated like a WM_MOUSEHWHEEL event: const QPoint angleDelta = (msg.message == WM_MOUSEHWHEEL || (keyModifiers & Qt::AltModifier)) ? QPoint(delta, 0) : QPoint(0, delta);

@ECEC said in Bind to another model's data in a delegate: @jeremy_k , A proxy model can only have one source though, so surely this would still require connecting to model B's dataChanged to be aware of relevant changes (i.e units changed)? QAbstractProxyModel::setSourceModel() only accepts one model. That doesn't mean that a proxy must use or limit itself to this interface.

@petero3 Thanks for the update. Because we have to stick to older Qt version I found workaround to use QQuickPaintedItem. Visually it gives me the same effect and CPU impact (if any) is bearable. ... only hands were dirty :-)

@huy2910 Any reason not to use more recent Qt version? Especially when using most recent Android version.