MouseWheelInputEvent Object extends MouseInputEvent 
- typestring - The type of the event, can be- mouseWheel.
- deltaXInteger (optional)
- deltaYInteger (optional)
- wheelTicksXInteger (optional)
- wheelTicksYInteger (optional)
- accelerationRatioXInteger (optional)
- accelerationRatioYInteger (optional)
- hasPreciseScrollingDeltasboolean (optional)
- canScrollboolean (optional)