QML and Qt Quick

Well i'm using a touchscreen device and I'm trying to test which is the minimum frames per second screen update that is acceptable. So for pinching and zooming or panning when it just becomes to choppy.

Same with mp3. Report about it here: "QTBUG-37480":https://bugreports.qt-project.org/browse/QTBUG-37480

Dont forget to add disconnect

How does other file formats work for you ?

Thanks for all guys that help me. ;)

You can use the QPainter or to use openGL API for paint

Hi, thanks for replay, but got it working already. QML video is not good for me, because I'm working on augumented reality project and I have to use opencv for pre-processing the video. Implementation looks like this: @QML: Timer { interval: 40; running: true; repeat: true; onTriggered:{ background.textureImage=myCamera.getImage(); } } C++: QImage myCamera::getImage(){ iplImage = cvQueryFrame(capture); faceLandmarks->detect(iplImage); /* for augumented reality*/ qImage = myCamera::ipl2Qimg(iplImage); return qImage; }@ [edit added missing coding tags @ SGaist]

I also couldn't play streaming video with the QML Video element

I also noticed Qt have problems with detecting touch events from multiple sources

On what platform do you work ?

Thanks for the hint. I´ll test it.

Yes, indeed. With property binding it should quite straightforward I believe. I will try this and see how it works. Thanks a lot! Best regards.

Thanks! Hope it be fixed soon.

You could probably do a similar approach even simpler by using QQuickPaintedItem or even just a Canvas item in QML. While it would technically work, I don't think I would recommend it as you lose all benefits of hardware acceleration and the performance memory cost would be significant for all but the most simple use cases. However you might even want to consider using Qt Quick 1 on your device as it still works and supports the antialiasing property directly.

thanks for your time... I found out that my gstreamer-0.10 development package was not found during cross-compilation due to the fact that I was missing -sysroot in ./configure step... now I am cross-compiling again (it will take some hours) and I'll let you know if then I am able to play videos

Thank you all for your answers! @Jens: I also had the idea to use the onCurrentChanged event of the ListView. But that was not enough because I still had to find a appropriate way to inform a specific (the actual visible one) delegate about the page changes - and I struggled with that without success... I finally solved the problem for me by using the following Binding for my relevant content inside the delegate: @Binding { target: contentItem property: 'model' value: { if(myListView.currentIndex===index) loadCurrentPageModel(); else loadPageModel(); } }@

Thank you Xander. Hopefully it's easier to understand/refactor than to just re-invent!

In addition to the links posted above I would also suggest: the SQLite documentation for "SELECT statement":http://www.sqlite.org/lang_select.html "Qt SQL Database Drivers":http://qt-project.org/doc/qt-5/sql-driver.html

Sorry, but i don't know about a tutorial that gets closer to what you want. In another thread Jens announced" that they plan a blog on this subject":http://qt-project.org/forums/viewthread/41161/#171004 So stay tuned on the blog section.