pragma ComponentBehavior: Bound
import QtQuick.Controls
import QtQuick.Window
import QtQuick

Window {
   Button {
        anchors.centerIn: parent
        text: "open popup"
        onClicked: {
            loader.sourceComponent = loadPageComponent;
            let dlg = loader.item as Popup;
            dlg.open2();
        }
    }
    Loader {
        id: loader
    }

    Component {
        id: loadPageComponent

        Popup {
            id: myDlg
            Text {
                id: cap
                anchors.fill: parent
                text: qsTr("Some message")
            }
            onClosed: {
                console.log("onClosed in component");
                loader.sourceComponent = undefined;
            }
        }
    }
}