Day of qt

Not so long ago I've start to write different programmes based on c++ qt framework.
It's very great full, very thoughtful, very similar to C#, java. But Qt haven't event model or delegate model. But it have more flexible model, SIGNALS and SLOTS.
For example:
You have model (A) and (B) and (C)
(A) have to send data to model (B) and (C).
and you write:
QObject::connect(A, SIGNAL(sendDataSignal()),
B, SLOT()));
You can also subscribe for example: signal to signal, signal to slot. It's build a chain.
It hasn't long been seen nothing convenient.