qml Drag的使用

import QtQuick
import QtQuick.Window

Window {
    id:box
    width: 640
    height: 480
    visible: true
    title: qsTr("Hello World")

    Rectangle {
        id: blueSquare
        width: 120; height: 120
        x: box.width - width - 10;
        y: 10
        color: "blue"

        Text { text: "Drag"; font.pixelSize: 16; color: "white"; anchors.centerIn: parent }

        MouseArea {
            anchors.fill: parent
            //! [drag]
            drag.target: blueSquare
            drag.axis: Drag.XAndYAxis
            drag.minimumX: 0
            drag.maximumX: box.width - parent.width
            drag.minimumY: 0
            drag.maximumY: box.height - parent.width
            //! [drag]
        }
    }
}