qml添加滚动条

import QtQuick.Controls 2.15

ScrollBar.vertical: ScrollBar {
   visible: flick1.contentHeight > flick1.height
   anchors.right: parent.right
   anchors.rightMargin: 40
   width: 10
   active: true
   contentItem: Rectangle {
       radius: 6
       opacity: 0.5
       color: "#7882A0"
   }
}