'宣言
Public MustInherit Class _CartesianOverlayItemView(Of TOverlayView As ICartesianOverlayView) Inherits _BaseOverlayItemView(Of TOverlayView) Implements ICartesianOverlayItemView, IHoverView, IIdentityView, IModel, IOverlayItemModel, IOverlayItemView, IQueryInterface, IView, IViewModel
public abstract class _CartesianOverlayItemView<TOverlayView> : _BaseOverlayItemView<TOverlayView>, ICartesianOverlayItemView, IHoverView, IIdentityView, IModel, IOverlayItemModel, IOverlayItemView, IQueryInterface, IView, IViewModel where TOverlayView: ICartesianOverlayView