Cannot assign to property of a property alias in reusable component

[Kamichanw]

I'm trying to assign value to content.padding , where content is a property alias from MyButton.qml and padding is a property of content. However, the complier shows Cannot assign to non-existent property padding, which confused me a lot.

import QtQuick
import QtQuick.Controls
Window{
    MyButton {
        content.padding: 10
    }
}

// MyButton.qml
import QtQuick
import QtQuick.Controls
Rectangle {
    property alias content: content
    Rectangle{
        id: content
        property int padding: 0
    }
}

[sierdzio]

Maybe the double-naming gets confusing for QML engine? Try this:

property alias content: contentInternal
    Rectangle{
        id: contentInternal

[Kamichanw]

@sierdzio I tried your solution, but it doesn't work.

[Kamichanw]

I believe this a defect, at least, it should be fixed in future. The only way to assign property from a property alias is assigning in runtime. Do as follows:

MyButton {
     Component.onCompleted: content.padding = 10
}