'QObject::QObject' cannot access private member declared in class 'QObject'

Question

class CHIProjectData : public QObject
{
public:
    CHIProjectData();
    CHIProjectData(QMap aProjectData,
                   CHIAkmMetaData*         


        

Answer 1

The default constructor for QObject must be private and the error you are getting is quite likely to do with CHIProjectData::CHIProjectData (default constructor) implicitly trying to invoke base class's default constructor. If you look at QObject you would most likely find that it's defined something like this:

class QObject {
    QObject(); //private contructor, derived classes cannot call this constructor
public:
    QObject(QObject* aParent);
};

The solution is to make default QObject constructor protected or public or call other constructor overload from the default CHIProjectData constructor:

CHIProjectData::CHIProjectData() : QObject(NULL){
}