1、示例1

import QtQuick 2.9
import QtQuick.Window 2.2
import QtQuick.Controls 2.2
 
Window {
    visible: true
    width: 640
    height: 480
    title: qsTr("Hello World")
 
    property int index: 0
 
    StackView {
        id: stackview
        anchors.fill: parent
        initialItem: com1
    }
 
    Component {
        id: com1
        Rectangle {
            width: 200
            height: 200
            color: "red"
        }
    }
 
    Component {
        id: com2
        Rectangle {
            width: 200
            height: 200
            color: "yellow"
        }
    }
 
    Component {
        id: com3
        Rectangle {
            width: 200
            height: 200
            color: "blue"
        }
    }
 
    Button {
        width: 50
        height: 50
        anchors.centerIn: parent
        Text {
            anchors.centerIn: parent
            text: "button"
            color: "yellow"
        }