Multiple virtual inheritance with common base class

Question

I've going through some code recently to learn more about programming in C++ and I'm facing something somehow a bit odd.

I got a class declaration :

class myClass : public QObject, public virtual myObject::myOtherObject::myInterface {
    Q_OBJECT
    public: [...]
}

And I got the following error while compiling :

error: expected class-name before '{' token
error: myInterface is not a member of 'myObject::myOtherObject'

Is this a syntax error somewhere ? I can't figure out what is the problem ...

Do you happen to know what could be the solution ?

Many thanks :)

EDIT : The interface was irrelevant and the solution elsewhere. Nevertheless the answers helped .

Answer 1

Is this a syntax error somewhere?

No, your code is syntactically correct. The following compiles fine, without error:

#include <QObject>

namespace myObject {
  namespace myOtherObject {
    class myInterface {
    };
  }
}

class myClass : public QObject, public virtual myObject::myOtherObject::myInterface {
    Q_OBJECT
    public:
};

So, you need to check where your myInterface class is defined and make sure that it is properly included.