Question

I can’t see what I’m doing wrong. I’m trying to create some properties in a class (as I did before) but this time I’m getting the error “class Foo has no member named MyProp”

The header is:

#ifndef P_H
#define P_H

#include <QObject>

class P : public QObject
{
    Q_OBJECT
    Q_PROPERTY(int Prop READ getProp WRITE setProp)
  public:
    explicit P(QObject *parent = 0);

    int getProp() const;
    void setProp(int nP);
  private:
    int m_p;
};

#endif // P_H

and the cpp file is:

#include "p.h"

P::P(QObject *parent) :
  QObject(parent)
{
}

int P::getProp() const
{
  return m_p;
}

void P::setProp(int nP)
{
  m_p = nP;
}

But when I try to use foobar.P I got the error class P has no member named P. I’ve been reading Qt documentation and I can’t see any difference. Does anyone see what I’m doing wrong?

I’m using Qt Creator 2.4.1 and Qt 4.8.

[… Edit …]

Here is how I’m trying to use it:

#include "p.h"

int main(int argc, char *argv[])
{
  P c;

  c.Prop = 2;

  return 0;
}

This is the simplest example I could think of and I got the same error.

Thanks in advance.

Answer 1

You need to use it like this:

P c;
c.setProperty("Prop", 42);  // set the property
c.property("Prop");         // retrieve the property