QObject connect QSystemDeviceInfo::Profile to QVariant

Question

I have a QML part of my application that needs to know what state I'm in. The currentProfileChanged function has a signal giving me a QSystemDeviceInfo::Profile that I want to convert to a QVaraint so that the QML can understand the profile as a number between 0 and 7, but this function:

QObject::connect(deviceInfo, 
    SIGNAL(currentProfileChanged(QSystemDeviceInfo::Profile)),
    rootObject,
    SLOT(changePower(QVariant(QSystemDeviceInfo::Profile))));

Gives this strange error:

[Qt Message] Object::connect: No such slot
     QDeclarativeItem_QML_3::changePower(QVariant(QSystemDeviceInfo::Profile))  
     in C:/Users/Gerhard/QTProjects/Raker/main.cpp:142

What I am doing wrong here?

If I try this:

QObject::connect(deviceInfo, 
    SIGNAL(currentProfileChanged(QSystemDeviceInfo::Profile)),
    rootObject,
    SLOT(changePower(QVariant(QSystemDeviceInfo::Profile))));

It says this:

[Qt Message] Object::connect: No such slot
     QDeclarativeItem_QML_3::changePower(QSystemDeviceInfo::Profile)  
     in C:/Users/Gerhard/QTProjects/Raker/main.cpp:142

If I change any or both to just QVariant it also complains about incompatible arguments.

Answer 1

As there appears to be no easier way I had to write a function to convert the types and add some more signal slots but at least it works now, here's my function if you want it:

#include <QObject>
#include <QVariant>
#include <QSystemDeviceInfo>
#include <QDebug>

using namespace QtMobility;


class changeVAriant : public QObject
{
    Q_OBJECT

public slots:
    void toVariant(QSystemDeviceInfo::Profile prof)
    {
        emit newVariant(QVariant(prof));
    }
signals:
    void newVariant(QVariant);
};