QML Component Components Properties not-existing

[Itehnological]

I am working on a simple UI with QML. Here is my issue:

Main.qml
@ComplexButton {
background.color: '#fff000'
}@

ComplexButton.qml
@Item {
property alias background: background

Image {
property alias color: rect.color

id: background

Rectangle {
id: rect
}
}
}@

And I get the following error:
@Main.qml:2 - Cannot assign to non-existent property "color"@

Which is kind of weird. The property color is inaccessible. I came across this "bug":https://bugreports.qt-project.org/browse/QTBUG-10082 where a similar issue is introduced but according to that it has been fixed. I am using the latest version of Qt SDK - downloaded about two weeks ago.

Any idea?

[raaghuu]

Ok... i tried fooling around a bit with this code... the closest i got to an explanation was the error

@untitled1.qml:5:5: Invalid property assignment: "background" is a read-only property@
that's when i use the rect directly in the Item aliasing... so probably you can only access the properties, not modify them

[Itehnological]

Hi,
After playing with it for some time I noticed the following:
@ComplexButton {
Component.onCompleted: {
console.log(background.color)
background.color = '#00fff'
}
}@
works perfectly, so I guess that by then the element isn't initialized yet.

UPDATED:

Also, if I change that color property to a string instead of alias like that:
@property string color: '#00000000'@

I got the same error. So the uninitialized element has to be the Image.
How can I fix that?

[chriadam]

This is a bug. I've filed QTBUG-26290 to track this issue.