QML and Qt Quick

@beidaochuan That's good :) If you are done, please mark the post as solved.

Hi @Reinier-R.-Gonzalez, The class should be declared as: class PLAYERSHARED_EXPORT Player : public QObject //Note the public keyword

Asked... Apparently QtQuickView is not threaded by default, and the only way I've been told to achieve this is with a non-cross-platform way, by setting a Windows environment variable QSG_RENDER_LOOP with value "threaded". However, it doesn't seems to work, and the way it's enabled is not quite as I expected. Ideally, we would like the GUI not being responsible for conflicts or lags, and vice versa...

@p3c0 Thanks a lot. I have resolved it using the qt sample ..\Qt\Qt5.4.1\Examples\Qt-5.4\quick\customitems\tabwidget

https://bugreports.qt.io/browse/QTBUG-38175

Hi @patrikd, You can keep a boolean property which will be updated as required. Use this as a condition for the model. property bool updateNeeded: false ... ListView { model: updateNeeded ? myModel : null } When the property updateNeeded is updated to true the binding will reevaluate and items should be populated.

@mrdebug Is this what you are trying to do ? import QtQuick 2.4 Item { width: 100 height: 120 Loader { id: loader anchors.fill: parent sourceComponent: component } Component { id: component Rectangle { id: rect width: parent.width height: parent.height color: "red" NumberAnimation { running: true target: rect from: -100 to: 0 property: "x" duration: 600 easing.type: Easing.InOutQuad } } } }

@JDGXNV The delegates are recycled every-time you scroll which means there are created and destroyed as and when required internally (More here: delegate). Caching them disables it. So I guess the problem should be on the delegate side i.e the delegate is trying to access some property which it is not able and hence crashes.

Hi @kolegs, How did you capture the frame ?

Hi @JDGXNV, You can use onEditingFinished signal handler instead.

@marcosbontempo That's fine.. It happens all the time :)

Can anyone explain how to use picking in qt3d 2.0 with the scene3d instead of viewport? As far as i know there is no property called 'picking'.

@xumuk Please mark it as solved if it worked so that others may understand that it has solution.

@p3c0 I have already used ComboboxStyle to customize it, but still can`t solve this) Will try, ty for answer.

Thank you , given link is helpful.

Hi Why not just save pointer of allocated model? Also, consider to register the pointer at quick engine as CPP, other wise it might be destroed by JS GC in an inappropriate time br

My problem is image delegate only. I found addiotional regularity: problematic delegates have the same picture as last top delegate hidden during scroll down within ListView. It seems scrolling out delegate from visible area forces it's image repaint in other delegates, which are in visible area. This repaint seems to hide the text element, declered with z-order above the image. Reset the visible property (visible=false, visible=true) at end of each scrolling (using onMovementEneded) solves the problem. But, i don't want to pay the repaint price of such solution as my application is running on embedded device.

Hi @hongquan, Yes width is the exact property. Are you sure something other is not affecting the it ?