'宣言
Public Class _RectangleAnnotationDefinition Inherits GrapeCity.DataVisualization.Chart._BaseAnnotationOverlayDefinition(Of IRectangleOverlayOption) Implements IAnnotationOverlayDefinition, ILegendOverlayDefinition, IOverlayDefinition, IQueryInterface
public class _RectangleAnnotationDefinition : GrapeCity.DataVisualization.Chart._BaseAnnotationOverlayDefinition<IRectangleOverlayOption>, IAnnotationOverlayDefinition, ILegendOverlayDefinition, IOverlayDefinition, IQueryInterface