QML自定义IP地址输入框

QML输入框同样能用正则表达式，在输入ip地址时使用正则来判断输入的正确性    TextField {    id: textfield_operation_ip1    x: 492    y: 120    width: 269    height: 61    text: ""    visible: true    placeholderText: qsTr("请输入IP地址")    font.pixelSize: 25    focus:true    validator: RegExpValidator{regExp:/(?=(\b|\D))(((\d{1,2})|(1\d{1,2})|(2[0-4]\d)|(25[0-5]))\.){3}((\d{1,2})|(1\d{1,2})|(2[0-4]\d)|(25[0-5]))(?=(\b|\D))/}

// style: textfied_style
}