I want to run the example found here -------> http://doc.qt.nokia.com/qtmobility-1...phonebook.html
but I have an error in this line ----------------> QContactObserver* m_observer;
the error is -------------------------------------> ISO C++ forbids declaration of 'QContactObserver' with no type
in contacteditor.h file

What's wrong ? what should I do for that to run??
Thanks in advance