StatusBar is not a type

white

I used the following code to learn qml development.
but it will report 'StatusBar' is not a type when compiling.
I am using the Qt 5.14.2 and compose file by qt creator.
I have also read the qml document 5.14.2 and copy the example code of 'StatusBar' .

Thanks for any comments.

import QtQuick 2.12
import QtQuick.Controls 2.12
import QtQuick.Window 2.12
import QtQuick.Layouts 1.3

ApplicationWindow {
id: main
visible: true
width: 960 //640
height: 640 //480
visibility: "Maximized"
title: qsTr("Hello world")

menuBar: MenuBar {
    Menu {
        title: qsTr("test")
        MenuItem {
            text: qsTr("test1")
            Shortcut {
                sequence: "Ctrl+N"
            }
        }
   }
}

header: ToolBar {
    
        ToolButton {
            text: qsTr("About")

        }
    
}

footer: StatusBar  {
     RowLayout {
         anchors.fill: parent
         Label { text: "Read Only" }
     }
}

}

eyllanesc

@white StatusBar belongs to Qt Quick Control 1:

import QtQuick 2.12
import QtQuick.Controls 2.12
import QtQuick.Layouts 1.3
import QtQuick.Window 2.12
import QtQuick.Controls 1.4 as QQC1

ApplicationWindow {
    id: main

    visible: true
    width: 960 //640
    height: 640 //480
    visibility: "Maximized"
    title: qsTr("Hello world")

    menuBar: MenuBar {
        Menu {
            title: qsTr("test")

            MenuItem {
                text: qsTr("test1")

                Shortcut {
                    sequence: "Ctrl+N"
                }

            }

        }

    }

    header: ToolBar {
        ToolButton {
            text: qsTr("About")
        }

    }

    footer: QQC1.StatusBar {
        RowLayout {
            anchors.fill: parent

            Label {
                text: "Read Only"
            }

        }

    }

}

white

Cool. I change the code according to your comments.
the issue is gone/fixed. Thanks for your help.

I thought when I imported the control version 2.12 "import QtQuick.Controls 2.12" , it should include all controls that come before this version.
Now I realized I should import the exactly version number like what the document mentioned.

In Android there is one concept like API level, It is convenience. I guess if implement the control like this will make development easier.