'宣言
Public MustInherit Class _ScrollableView(Of TOwnerView As IView) Inherits _RectangleView(Of TOwnerView) Implements IQueryInterface, IRectangleView, IScrollableView, IView
public abstract class _ScrollableView<TOwnerView> : _RectangleView<TOwnerView>, IQueryInterface, IRectangleView, IScrollableView, IView where TOwnerView: IView