Qt QML Singleton Intellisense

Qt QML, they do work, but no intellisense in QML references. Can I achieve intellisense?

pragma Singleton
import QtQuick 2.0
import QtQuick.Window 2.3

Item {
    property int iMode: 0
    property bool bSwapLeftRight: false

Registering it:

qmlRegisterSingletonType(QUrl(QLatin1String("qrc:/GlobalSettings.qml")), "ncs.global", 1, 0, "SingletonSettings" );

Second example;:

ctxt->setContextProperty("someModel", QVariant::fromValue(ownModel));
ctxt->setContextProperty("globalControl", QVariant::fromValue(globalControl.Get()));

First one i achieve IntelliSense in QML whilst using, the second one is the singleton, I do not achieve IntelliSense. Planning to expose some c++ defined enums to QML through this one, but looses value when no IntelliSense is provided..

Question is basically, do Qt Quick and Creator support IntelliSense for singleton classes ? Worthwhile investigating further?

Adding some more details, main question is NOT about enum's, but IntelliSense (auto-complete):

A few snippets:

main.cpp:
    //Regular Pointer
        SomeModel* ownModel = new SomeModel();
    //Custom Singleton implementation
        GlobalControlSP globalControl = GlobalControl::GetInstance();

    //I did not really want this line. GlobalControl should be singleton, how would this be threated?
        qmlRegisterType<GlobalControl>("ncs.global", 1, 0, "Global");

    //Registering a "Pragma Singleton" file, Intellisense do not work
        qmlRegisterSingletonType(QUrl(QLatin1String("qrc:/GlobalSettings.qml")), "ncs.global", 1, 0, "SingletonSettings" );

        QQmlApplicationEngine engine;
        QQmlContext* ctxt = engine.rootContext();

    //Regular context property, not singleton. Intellisense works
        ctxt->setContextProperty("ownModel", QVariant::fromValue(ownModel));

    //Registering the singleton as context property, Intellisense do not work
        ctxt->setContextProperty("globalControl", QVariant::fromValue(globalControl.Get()));

        engine.load(QUrl(QLatin1String("qrc:/main.qml")));

globalcontrol.h:
class GlobalControl : public QObject,
{
    Q_OBJECT
    Q_PROPERTY(QString backcolor READ backcolor NOTIFY backcolorChanged)
    ....

public:
    GlobalControl(QObject *parent = nullptr);
    QString backcolor() const { return m_backColor; }
    ....
    enum EnButton
    {
        DEVICE_START,
        DEVICE_IR,
        .....
    };
    Q_ENUM(EnButton)

public slots:
    void changeMode(int mode);
    void buttonPressed(int button);


some qml file:

//This implementation works:
    NcsButton {
        property int valuent
        id:ir
        text: qsTr("IR")
        width: 66 * widthScaling
        Layout.row: 4
        Layout.column: 1
        fontColor: bIr ? valueColor : textColor
        onClicked: {
            globalControl.buttonPressed(Global.DEVICE_IR)

//This does not work:
    NcsButton {
        id:ir
        text: qsTr("IR")
        width: 66 * widthScaling
        Layout.row: 4
        Layout.column: 1
        fontColor: bIr ? valueColor : textColor
        onClicked: {
            globalControl.buttonPressed(globalControl.DEVICE_IR)