@arguskso said in Is it possible to notify items in the model without signals?:

when new
data is coming I can emmit signal with an id and all delegates will receive it and one with the corresponding id will send one more
signal back to the model with it's index in the model.

Delegates are used for displaying, they don't know anything about the internal data structure and don't have really access to anything else except it's own index. This can't work. You have to do it the way @JonB suggested to you.

Thanks for reply. I already solved it too.

It's necessary to return pointer to AnimalModel and not reference. Also there is no necessity for NOTIFY.

So this is the correct way:

Q_PROPERTY(AnimalModel * modelAnimals READ modelAnimals CONSTANT) AnimalModel* modelAnimals() { return &m_model;}

@SiliconKiwi helps, thanks.