Unresolved external symbol "public: virtual struct QMetaObject const * __thiscall Parent

Question

I inherited a class from QObject :

class Parent: public QObject
{
    Q_OBJECT
    QObject* cl;

public:
    Parent(QObject *parent=0):QObject(parent) {
            


        

Answer 1

I solved my problem by adding this to my header file :

#ifndef MYCLASSNAME_H
#define MYCLASSNAME_H

... // all the header file content.

#endif