C / C++ / MFC

public class ICamera
{
public:
  virtual ~ICamera()
  {}

  virtual ICamera *CreateClone() const = 0;
  
  //...
  //rest of ICamera's interface
};

public class IOrientation
{
public:
  virtual ~IOrientation()
  {}

  //...
  //rest of IOrientation's interface
};

public class C3DCamera : public ICamera, public IOrientation
{

  //ICamera implementation
  ICamera *CreateClone() const;

  //...
  //rest of C3DCamera's declaration
}

1. simply rename the interfaces' methods to CreateICameraClone(), CreateIOrientationClone, etc.
2. Use the technique I read about in Item 43 of Effective C++ - create CCamera and COrientation classes that declare pure virtual CreateICameraClone()/CreateIOrientationClone() methods and define a n overrideable default implementation of CreateClone which calls the appropriate pure virtual method
3. ????