protected virtual void OnUpdateParticles(
	TimeSpan deltaTime,
	int startIndex,
	int count
)

Protected Overridable Sub OnUpdateParticles ( 
	deltaTime As TimeSpan,
	startIndex As Integer,
	count As Integer
)

protected:
virtual void OnUpdateParticles(
	TimeSpan deltaTime, 
	int startIndex, 
	int count
)

abstract OnUpdateParticles : 
        deltaTime : TimeSpan * 
        startIndex : int * 
        count : int -> unit 
override OnUpdateParticles : 
        deltaTime : TimeSpan * 
        startIndex : int * 
        count : int -> unit