Getting Pointer Position while Hovering over RectTransform

This should be easy … but apparently, it’s surprisingly hard: I need to know the position of the pointer(s) in a specific RectTransform. This is for a UI that works both in flatscreen and VR, so I can’t use the mouse position.

Is there any way to do this without major hacks?

Basically, if I could simply access

public class StandaloneInputModule : PointerInputModule {
    private PointerEventData m_InputPointerEvent;
}

that would be enough.

Or, if there was an IDragHandler that doesn’t require dragging (i.e. pressing the mouse button) …

Well, actually, accessing m_InputPointerEvent; wasn’t the way but I now have my own implementation of StandaloneInputModule that does what I need.