Mostrar barras de desplazamiento con Flickable y ScrollBar

importar QtQuick 2.0 importar
QtQuick.Controls 2.15
Rectángulo{ color: “rojo” Flickable { anclajes.relleno: padre contentHeight: parent.height*2 contentWidth: parent.width clip: verdadero límitesBehavior:Flickable.StopAtBounds ScrollBar.vertical: ScrollBar { anclajes. arriba: parent.top anclajes.topMargin: -1 anclajes.derecho: padre.derecho ancho: 30 alto: padre.alto fondo: Rectángulo { color: "rojo" } contentItem: Rectángulo { implicitWidth: 10; Altura implícita: 10; color: “azul” } } } }

iimport QtQuick 2.12
import QtQuick.Window 2.12
import QtQuick.Controls 2.5
import QtQuick.Controls 1.4
import QtQuick.Controls.Styles 1.4

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

    ScrollView
    {
        anchors.fill: parent
        style:ScrollViewStyle{
            handle: Rectangle {
                implicitWidth: 50
                implicitHeight: 30
                color: "red"
            }
            scrollBarBackground: Rectangle {
                implicitWidth: 50
                implicitHeight: 30
                color: "black"
            }
            decrementControl: Rectangle {
                implicitWidth: 50
                implicitHeight: 30
                color: "green"
            }
            incrementControl: Rectangle {
                implicitWidth: 50
                implicitHeight: 30
                color: "blue"
            }
        }

        ListView{
            anchors.fill: parent
            delegate: Rectangle
            {
                width: parent.width-14
                height: innerText.contentHeight+20
                color: (index%2 === 0) ? "#252525" :"#000000"
                Text
                {
                    id: innerText
                    anchors.fill: parent
                    verticalAlignment: Text.AlignVCenter
                    text: "name: " + modelData.name + "age: " + modelData.age
                    wrapMode: Text.WrapAnywhere
                    font.pixelSize: 14
                    color: "#ffffff"
                }
            }
            model:[
                {"name":"lilei","age":"20"},
                {"name":"hanmeimei","age":"15"},
                {"name":"lilei","age":"20"},
                {"name":"hanmeimei","age":"15"},
                {"name":"lilei","age":"20"},
                {"name":"hanmeimei","age":"15"},
                {"name":"lilei","age":"20"},
                {"name":"hanmeimei","age":"15"},
                {"name":"lilei","age":"20"},
                {"name":"hanmeimei","age":"15"},
                {"name":"lilei","age":"20"},
                {"name":"hanmeimei","age":"15"},
                {"name":"lilei","age":"20"},
                {"name":"hanmeimei","age":"15"},
                {"name":"lilei","age":"20"},
                {"name":"hanmeimei","age":"15"},
                {"name":"lilei","age":"20"},
                {"name":"hanmeimei","age":"15"},
                {"name":"wangbin","age":"22"}]
        }
    }
}

Por resolver: la posición del control deslizante volverá a la parte superior al cambiar de página