Qt Quick：如何从ComboBox获取当前文本

Question

我尝试从ComboBox的当前索引中获取文本。 model.get(scale).text方法不起作用，它只获得第一个索引。

import QtQuick 2.7
import QtQuick.Controls 2.0
import QtQuick.Layouts 1.3
import QtQuick.Controls.Material 2.0
ApplicationWindow {
    visible: true
    width: 200
    height: 200
    title: qsTr("Hello World")
Column{
    anchors.horizontalCenter: parent.horizontalCenter
    id:optionsColumn
    spacing: 5
    anchors.fill : parent
    anchors.topMargin    : 15
    anchors.bottomMargin : 15
    anchors.leftMargin :15
    anchors.rightMargin  : 15
    ComboBox {
        id: scale
        anchors.horizontalCenter: parent.horizontalCenter
        editable: true
        inputMethodHints: Qt.ImhDigitsOnly
        currentIndex: 1
        model: ListModel {
            id: model
            ListElement { text: "500" }
            ListElement { text: "1000" }
            ListElement { text: "2000" }
            ListElement { text: "5000" }
            ListElement { text: "10000" }
            ListElement { text: "25000" }
        }
        onAccepted: {
            id:maccepted
            if (find(editText) === -1)
                model.append({text: editText})
        }
    }
    Button{
        id:showtext
        text: "Scale to text"
        anchors.horizontalCenter: parent.horizontalCenter
        onClicked: {
            var a=parseFloat(model.get(scale).text)
            scaletext.text=a
        }
    }
    TextField{
        id:scaletext
        anchors.horizontalCenter: parent.horizontalCenter
        readOnly: true
    }
}
}

Answer 1

玩得开心。

onClicked: {
  //var a=parseFloat(model.get(scale).text)
  scaletext.text = scale.currentText; 
}