'宣言 Public Delegate Function GetGroupCenterHandler( _ ByVal index As Integer, _ ByVal window As Rect, _ ByVal viewport As Rect, _ ByVal effectiveViewport As Rect _ ) As Double
public delegate double GetGroupCenterHandler( int index, Rect window, Rect viewport, Rect effectiveViewport )
GetGroupCenterHandler メンバ Infragistics.Controls.Charts 名前空間