The type of event the TriggerEvent is intercepting.
| PointerEnter | Intercepts a IPointerEnterHandler.OnPointerEnter. | 
| PointerExit | Intercepts a IPointerExitHandler.OnPointerExit. | 
| PointerDown | Intercepts a IPointerDownHandler.OnPointerDown. | 
| PointerUp | Intercepts a IPointerUpHandler.OnPointerUp. | 
| PointerClick | Intercepts a IPointerClickHandler.OnPointerClick. | 
| Drag | Intercepts a IDragHandler.OnDrag. | 
| Drop | Intercepts a IDropHandler.OnDrop. | 
| Scroll | Intercepts a IScrollHandler.OnScroll. | 
| UpdateSelected | Intercepts a IUpdateSelectedHandler.OnUpdateSelected. | 
| Select | Intercepts a ISelectHandler.OnSelect. | 
| Deselect | Intercepts a IDeselectHandler.OnDeselect. | 
| Move | Intercepts a IMoveHandler.OnMove. | 
| InitializePotentialDrag | Intercepts IInitializePotentialDrag.InitializePotentialDrag. | 
| BeginDrag | Intercepts IBeginDragHandler.OnBeginDrag. | 
| EndDrag | Intercepts IEndDragHandler.OnEndDrag. | 
| Submit | Intercepts ISubmitHandler.Submit. | 
| Cancel | Intercepts ICancelHandler.OnCancel. |