QML获取文字的长度

 1Text {
 2    text: "text"
 3    font.pixelSize: 20
 4
 5    Text {
 6        id: _text
 7        visible: false
 8        text: parent.text
 9        font.pixelSize: parent.font.pixelSize
10    }
11
12    function textLength() {
13        return _text.width;
14    }
15
16    Component.onCompleted: console.log(textLength())
17}