Using both CQikBase as well as CActive

go with the Observer pattern as

class CA: public CQikBase, public MObserverActiveObject
{

// from MObserverActiveObject
void listeningfunc();
private:
CB* iActiveObjectInstance;
}

CA:NewL()
{
..
cb = CB::NewL(*this);
}
void CA::listeningfunc()
{
// do your function here
}

class MObserverActiveObject
{
virtual void listeningfunc() =0;
}

class CB::public CActive
{
CB(MObserverActiveObject& aObserver);
static CB* NewL(MObserverActiveObject& aObserver);
RunL();
DoCancel();
private:
MObserverActiveObject& iObserver;
}

CB:CB(MObserverActiveObject& aObserver):
CActive(<<>>>)
iObserver(aObserver)
{
CActiveScheduler::Add(this);
}

CB* CB::(MObserverActiveObject& aObserver)
{
CB* self = new (ELeave) CB(aObserver)
...
.

}
CB::RunL()
{
...
...
..
..

iObserver.listeningfunc();
...
...
...
}

Hope it will help in solving your problem.