Returns the drag state of the given Pointer for this Input Plugin.
The state will be one of the following:
0 = Not dragging anything 1 = Primary button down and objects below, so collect a draglist 2 = Pointer being checked if meets drag criteria 3 = Pointer meets criteria, notify the draglist 4 = Pointer actively dragging the draglist and has moved 5 = Pointer actively dragging but has been released, notify draglist
The Pointer to get the drag state for.
The drag state of the given Pointer.