'宣言 Public Delegate Sub AdjustScrollInfoCallback( _ ByVal isHorizontal As Boolean, _ ByVal mouseArgs As MouseEventArgs, _ ByVal item As ISelectableItem, _ ByRef scrollDirection As Nullable(Of ScrollDirection), _ ByRef timerInterval As Double _ )
public delegate void AdjustScrollInfoCallback( bool isHorizontal, MouseEventArgs mouseArgs, ISelectableItem item, ref Nullable<ScrollDirection> scrollDirection, ref double timerInterval )