Multiple inheritance problem

I have created a ChartView class that inherits "QChartView" and "QObject".

I need to generate a SIGNAL from the ChartView class and connect to the MainWindow SLOT.

However, currently, I am getting the following error.

"direct base 'QObject' is inaccessible due to ambiguity"

Code:

---

class ChartView : public QChartView , public QObject
{
    Q_OBJECT
private:
 
}

---

If I don't add QObject, then SIGNAL and SLOT don't work.

Any suggestion?

Quote:

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Originally Posted by Mohsin

If I don't add QObject, then SIGNAL and SLOT don't work.

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What does this mean? You don't need to derive from QObject since QChartView also has QObject as base class.

Quote:

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Originally Posted by ChristianEhrlicher

What does this mean? You don't need to derive from QObject since QChartView also has QObject as base class.

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I am getting errors (shown in the image) even when I use the following code

Code:

---

class ChartView : public QChartView
{
    Q_OBJECT
 
signals:
 void  updateGraphOrder();
 
 
}

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What build system do you use? You most likely forgot to include moc_charview.h

Did you try running qmake again and then a clean rebuild?

I tried but it didn't work.

The attached image contains the information about my system and Qt Version.