Qml 如何使TableView项可拖动

我有一个TableView，并为它实现了我自己的项委托。我想把它拖出来放到别的地方。我该怎么做

itemDelegate: Text {
    id: objMainText
    anchors.horizontalCenter: parent.horizontalCenter

    elide: styleData.elideMode
    color: "yellow"

    text: styleData.value.get(0).content //assume this is correct

    MouseArea {
        id: objDragArea

        anchors.fill: parent
        drag.target: objDragableText
        drag.axis: Drag.XAndYAxis

        hoverEnabled: true

        onEntered: {
            console.log("Hover Captured")          //This gets printed
        }

        onClicked: {
            console.log("Detected")                     //This NEVER gets printed
        }

        Text {
            id: objDragableText
            anchors.verticalCenter: parent.verticalCenter
            anchors.horizontalCenter: parent.horizontalCenter
            Drag.active: objDragArea.drag.active
            opacity: Drag.active / 2

            text: objMainText.text
            color: objMainText.color

            states: State {
                when: { objDragArea.drag.active }
                AnchorChanges {
                    anchors.horizontalCenter: undefined
                    anchors.verticalCenter: undefined
                }
            }
        }
    }
}

不要介意这里和那里是否少了几个括号。我当然会照顾那些人。但是为什么我不能拖动

objDragableText

，我该怎么做呢？ 此外，

onClicked

会像上面的注释一样被捕获，但不会被

onPressed

捕获。我该怎么做呢

{qt5.1rc1-Win7-mingw4.8}