send own class reference throught signal

Hi,

I have a own class that I need to emit using a signal. The problem is:

Code:

---

class classA
  classA::classA()
  {
 
  }
  public slots:
    void aSlot(myClass&);
 
class classB: public classA
  classB::classB()
  {
     bool bC = connect(pClassC,SIGNAL(aSignal(myClass&)),this,SLOT(aSlot(myClass&));
  //This returns me "true"
  };
  classC* pClassC;

---

classA is a base Class. Has the slot to be called.
classB is derived from classA. Conects the classC signal with parent slot.
classC is a class that do something and emits a signal.

I had this working by passing the objects as value, but now, passing them by reference, the slot is not called.

Any idea what is happening?

Thanks,

Hi,

I'm getting this:

Code:

---

Make sure 'myClass&' is registered using qRegisterMetaType().)

---

When I try to register it I'm getting this error when compiling:

Code:

---

c:\Qt\4.3.0\src\corelib\kernel\qmetatype.h(104): error C2558: class 'myClass' : no hay un constructor de copias disponible o éste se declaró como 'explicit'
 
in english maybe something like this:
c:\Qt\4.3.0\src\corelib\kernel\qmetatype.h(104): error C2558: class 'myClass' : there is not a copy constructor or this have been declared as 'explicit'

---

Thanks,

Are you sure you don't want to pass it as const reference?

Hi,

I just added "const" to copy constructor and it works.

Quote:

---

Are you sure you don't want to pass it as const reference?

---

How to do this and what is the difference?

Thanks,