'宣言
Protected Overridable Function GetSeriesValuePositionHelper( _
ByVal As Point, _
ByVal As Boolean, _
ByVal As Boolean, _
ByVal As Double, _
ByVal As Axis, _
ByVal As Axis, _
ByVal As Func(Of Point,Boolean,Boolean,Double), _
ByVal As Func(Of Point,Boolean,Integer), _
ByVal As Func(Of Point,Boolean,Integer) _
) As Point