How to set properties of a property alias?

Kamichanw

In Dummy.qml

import QtQuick

Item {
    property alias dummy: dummy

    Item {
        id: dummy
        property int dummyInt: 0
    }
}

And I want to use Dummy in main.qml and set proprety of dummy directly, but an error occurred: Cannot assign to non-existent property "dummyInt"

Dummy {
    dummy.dummyInt: 1
}

GrecKo

@Kamichanw said in How to set properties of a property alias?:

Item {
property alias dummy: dummy
Item {
    id: dummy
    property int dummyInt: 0
}
}

This is because the alias thinks dummy is just an Item. Left-hand QML bindings only work if the full type is known. A js imperative assignment would work.

To fix that you could create a standalone file for your inner type and use that in Dummy, or use an inline component:

Item {
    property alias dummy: dummy

    component InnerDummy: Item {
        property int dummyInt: 0
    }

    InnerDummy {
        id: dummy
    }
}

Bob64

This post is deleted!

GrecKo

@Kamichanw said in How to set properties of a property alias?:

Item {
property alias dummy: dummy
Item {
    id: dummy
    property int dummyInt: 0
}
}

This is because the alias thinks dummy is just an Item. Left-hand QML bindings only work if the full type is known. A js imperative assignment would work.

To fix that you could create a standalone file for your inner type and use that in Dummy, or use an inline component:

Item {
    property alias dummy: dummy

    component InnerDummy: Item {
        property int dummyInt: 0
    }

    InnerDummy {
        id: dummy
    }
}

Kamichanw

@GrecKo Awesome!!! This solved my confusion for a long time. I once thought it was impossible.