mapToGlobal not working when use Layout.

[Danima]

In the code below, I tried to detect the change of the x coordinate of the blue rectangle when clicking on the green rectangle. Unfortunately, onGxChanged never executes. How can I deal with this problem?

import QtQuick 2.2
import QtQuick.Window 2.2
import QtQuick.Layouts 1.2
Window {
    width: 640
    height: 480
    visible: true
    title: qsTr("Hello World")

    RowLayout
    {
        anchors.fill: parent
        Rectangle
        {
            id:rect
            color:"green"
            Layout.fillHeight: true
            Layout.fillWidth: true
            Layout.preferredWidth:25
            MouseArea
            {
                anchors.fill: parent
                onPressed: rect.Layout.preferredWidth=50
            }
        }
        Rectangle
        {
            color:"blue"
            Layout.fillHeight: true
            Layout.fillWidth: true
            Layout.preferredWidth:25
            property int gx:parent.mapToGlobal((Qt.point(0,0))).x
            onGxChanged: console.debug("gx changed.")

        }
    }
}

[Kamichanw]

Easy, that's because gx doesn't change at all. If you want to detect the change of gx, you can do like this

property int gx: parent.mapToGlobal((Qt.point(x, y))).x

[Danima]

@Kamichanw
ok that's working. but what about this code?

import QtQuick 2.2
import QtQuick.Window 2.2
import QtQuick.Layouts 1.2
Window {
    width: 640
    height: 480
    visible: true
    title: qsTr("Hello World")

    RowLayout
    {
        anchors.fill: parent
        Rectangle
        {
            id:rect
            color:"green"
            Layout.fillHeight: true
            Layout.fillWidth: true
            Layout.preferredWidth:25
            MouseArea
            {
                anchors.fill: parent
                onPressed: rect.Layout.preferredWidth=50
            }
        }
        Rectangle
        {
            color:"blue"
            Layout.fillHeight: true
            Layout.fillWidth: true
            Layout.preferredWidth:25
            Rectangle
            {
                color:"yellow"
                width:20
                height: 20
                radius: 10
                property int gx:parent.mapToGlobal((Qt.point(x,y))).x
                onGxChanged: console.debug("gx changed.")

            }
        }
    }
}

[Danima]

@Danima
some body help me.

[Danima]

This post is deleted!

[Danima]

@Danima
please somebody Help me.