Hi all,

I have a problem which I have no answer for....
I have created a class which is derived from QObject, and does implement an interface. For this class I do have added a copy constructor so that I can use it for Qt's collection classes like QList etc...
The relevant part of the header file does look like this:
Qt Code: 
  1. class CVO_StreamInfo : public QObject, public IVO_StreamInfoBase
  2. {
  3.     Q_OBJECT
  4.     Q_INTERFACES ( IVO_StreamInfoBase IVO_DataObject );
  5.  
  6.     public:
  7.     CVO_StreamInfo(QObject *parent = 0);
  8.     ~CVO_StreamInfo();
  9.     //
  10.     CVO_StreamInfo(const CVO_StreamInfo& streamInfo);
  11.     CVO_StreamInfo& operator=(const CVO_StreamInfo& streamInfo);
  12.     //
  13.     IVO_DataObject::ObjectVersion objectVersion() const;
  14.     quint32 hash() const;
  15.     //
  16.     ...
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The class does work perfectly, and the code compiles. However the compiler does throw a warning:
"class IVO_StreamInfoBase should be explicitly initialized in the copy constructor..."

But since the IVO_StreamInfoBase is an interface with all pure virtual methods with no constructor available, what is it that I have to do to get rid of this warning?

Any idea?
The source of the copy constructor method does look like this:
Qt Code: 
  1. CVO_StreamInfo::CVO_StreamInfo(const CVO_StreamInfo& streamInfo) : QObject(0)
  2. {
  3.     // Make a copy of all properties
  4.     ...
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Thanks,
Michael