同级qml之间信号与槽

SquareButton.qml

import QtQuick 2.2

Rectangle{
    id:root
    signal activated(real xPosition, real yPostion)
    signal deactivated
     100;height: 100
    MouseArea{
        anchors.fill: parent
        onClicked: {
            console.log("xxx")
             onPressed: root.activated(mouseX,mouseY)
             onReleased:root.deactivated

        }


    }
}

main.qml

import QtQuick 2.9
import QtQuick.Window 2.2

Window {
    visible: true
     640
    height: 480
    title: qsTr("Hello World")
    SquareButton{
        onActivated: console.log("xxxx"+xPosition+","+yPostion)
        onDeactivated: console.log("yyyy")
    }
}

SquareButton中信号  activated 对应main.qml中 onActivated