(C++) Q_OBJECT

 

Q_OBJECT is a Qt macro that every class derived from QObject that uses signals and slots must have in its declaration.

 

 

 

 

 

emitter.h

 

---

#ifndef EMITTER_H #define EMITTER_H #include <QObject> struct Emitter : public QObject {   Q_OBJECT   public:     void emit_ok();   signals:     void ok(); }; #endif // EMITTER_H

 

 

 

 

 

emitter.cpp

 

---

#include <iostream> #include "emitter.h" void Emitter::emit_ok() {   std::clog << "Emitting\n";   emit ok(); }