Error when adding chart to main.qml

[Duc Nguyen]

I want to add line chart to the main.qml but it cause error. I tried to search for the error on the internet but I couldn't find anything. This is my error code:

import QtQuick 2.12
import QtQuick.Window 2.12
import QtQuick.Layouts 1.12
import QtQuick.Controls 2.5
import QtCharts 2.15
import "./source"
import MyCppObject 1.0

ApplicationWindow {
    visible: true
    width: 700
    height: 480
    title: qsTr("Hello World")


    CppObject{  //c++object
        id:cpp_obj
    }

    VersionPage{  //Version window object
        id:ver
    }


    header:ToolBar{
        font.pixelSize: 20
        font.bold: true
        RowLayout{
            Button{
                text: "Version"
                onClicked: {
                    ver.visible=true
                }
            }

            Button{
                text: "Clear"
                onClicked: {
                    //myDisPlayView.clearDisplayText()
                }
            }

        }
    }

    GridLayout{
        anchors.fill: parent
        columns: 2
        columnSpacing: 2
        rowSpacing: 2
        anchors.margins: 7
                                    
        Rectangle{
            id: rect
            width: 200
            Layout.fillHeight: true
            height: 5
            border.color: "gray"
            border.width: 1
            //anchors.margins: 1
            SettingView{
                id:mySettingView
                anchors.margins: 2
                anchors.fill: parent
                Layout.fillWidth: false

            }
        }
        ColumnLayout{
            Layout.alignment: rect.right
            anchors.margins: 1

            Rectangle{
                Layout.fillHeight: true
                Layout.fillWidth: true
                Layout.columnSpan:2
                border.width: 1
                border.color: "gray"
                height: 4

//*************** Error field****************
                ChartView {
                    id: line
                    anchors.fill:parent
                    LineSeries {
                        name: "LineSeries"
                        XYPoint {
                            x: 0
                            y: 2
                        }

                        XYPoint {
                            x: 1
                            y: 1.2
                        }

                        XYPoint {
                            x: 2
                            y: 3.3
                        }

                        XYPoint {
                            x: 5
                            y: 2.1
                        }
                    }
                }
//*************************************************

            }

            Rectangle{
                Layout.fillWidth: true
                Layout.fillHeight: true
                width: 2
                border.color: "gray"
                border.width: 1
                //Display data interface
                DisplayView{
                    id:myDisPlayView
                    anchors.fill: parent

                }
            }
        }

    }

}

• When I remove the error field, it works normally.
• I want to add line chart to "chart here" location.
  

[GrecKo]

Use a QApplication instead of a QGuiApplication. The Charts module depends on Qt Widgets.

[Duc Nguyen]

@GrecKo thank you very much. This error took a lot of my time.