qt-everywhere-src-5.15.1/qtquickcontrols2/examples/quickcontrols2/gallery/pages/ComboBoxPage.qml

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import QtQuick 2.12
import QtQuick.Controls 2.12

ScrollablePage {
    id: page

    Column {
        spacing: 40
        width: parent.width

        Label {
            width: parent.width
            wrapMode: Label.Wrap
            horizontalAlignment: Qt.AlignHCenter
            text: "ComboBox is a combined button and popup list. It presents "
                + "a list of options to the user that occupies minimal screen space."
        }

        ComboBox {
            model: ["First", "Second", "Third"]
            anchors.horizontalCenter: parent.horizontalCenter
        }

        Label {
            width: parent.width
            wrapMode: Label.Wrap
            horizontalAlignment: Qt.AlignHCenter
            text: "ComboBox can be made \l editable. An editable combo box auto-"
                + "completes its text based on what is available in the model."
        }

        ComboBox {
            editable: true
            model: ListModel {
                id: model
                ListElement { text: "Banana" }
                ListElement { text: "Apple" }
                ListElement { text: "Coconut" }
            }
            onAccepted: {
                if (find(editText) === -1)
                    model.append({text: editText})
            }
            anchors.horizontalCenter: parent.horizontalCenter
        }
    }
}