[4.6 GUI] Source of event

When listening to an event, is it possible to know what object has raised it? The DF-GUI equivalent would be, for instance:

public void OnClick( dfControl source, dfMouseEventArgs args ){}

so I would know what GUI element was clicked.

Thanks for your help
Lasse

PointerEventData has a raycast you can check for the trigger object:

void Test(PointerEventData data)
{
	Debug.Log("Caller: "+data.pointerCurrentRaycast.go.name);
}