error with qml

vale88

import QtQuick 2.4
import QtQuick.Extras 1.4
import QtQuick.Controls.Styles.Desktop 1.0
import Qt.labs.qmlmodels 1.0
import QtQuick.Shapes 1.11
import QtCanvas3D 1.1

Rectangle {

id: rectangle

width:400

height: 400





//transformOrigin: Item.Left





CircularGauge {
    id: circularGauge
    y: 60
    anchors.left: parent.left
    anchors.leftMargin: 96
}

}

but I have an error:
StyleItem is not a type
and
qrc:/QMl.qml: Type RowItemSingleton unavailable

and I have:

ODБOï

@vale88

import QtQuick 2.12
import QtQuick.Window 2.12
import QtQuick.Controls 2.12
import QtQuick.Extras 1.4 

ApplicationWindow {
    id: root
    width: 800
    height: 600
    visible: true

    CircularGauge {
        id: circularGauge
        y: 60
        anchors.left: parent.left
        anchors.leftMargin: 96
    }
}

@vale88 said in error with qml:

StyleItem

What is StyleItem ? There is no ref to StyleItem in the code you pasted here. In your qt creator application output tab you should see the line in your code where the error occured

note: please try to format/ indent you code correctly before you past it, huge spaces around a commented line is fully useless
please try to provide some explanation with human words about what you are trying to achieve

vale88

@LeLev said in error with qml:

import QtQuick 2.12
import QtQuick.Window 2.12
import QtQuick.Controls 2.12
import QtQuick.Extras 1.4

ApplicationWindow {
id: root
width: 800
height: 600
visible: true
CircularGauge {
    id: circularGauge
    y: 60
    anchors.left: parent.left
    anchors.leftMargin: 96
}
}

I have an error

QML debugging is enabled. Only use this in a safe environment.
QQuickWidget does not support using windows as a root item. 

If you wish to create your root window from QML, consider using QQmlApplicationEngine instead.

I wrote like you wrote..when two screens open, in one there is mainwindow, and on the other qml..I want it opens in mainwindow

I wrote:

 ui->quickWidget->setSource(QUrl("qrc:///qml.qml"));