[SOLVED]Issue with particle system and hanging window

belab

With the downloaded Qt5.0.2 - msvc2012_64 on win7 when I try to move the window of the following qmlscene, the window keeps hanging at its current position and doesn't react anymore until changing the focus with alt+tab.

@
import QtQuick 2.0
import QtQuick.Particles 2.0

Rectangle {
width: 224
height: 288
color: "black"
id: background

ParticleSystem {
    anchors.fill: parent

    ImageParticle {
        source: "star.png"
        colorVariation: 1.0
    }

    Emitter {
        width: background.width;
        height: 1
        size: 8
        sizeVariation: 5
        anchors.top: parent.top
        lifeSpan: 6000
        velocity: AngleDirection {
            angle: 90
            angleVariation: 1
            magnitude: 150
            magnitudeVariation: 100
        }
    }
}

}
@

Without the particle system I can move the window around. I already recognized this behavior in 5.0 but I thought this would be fixed in an upcoming version.

sletta

There is a rather ugly issue with timers starving system events when you combine msvc 2012 with win7. In Qt 5.1 there is a new renderloop for Qt Quick for windows which, amongst other things, avoids this particular issue.

belab

Thanks for your reply, so I'm looking forward to Qt 5.1.