'宣言
Public Class _NeedleAnnotationOverlayDefinition Inherits _LineAnnotationDefinition Implements IAnnotationOverlayDefinition, ILegendOverlayDefinition, ILineAnnotationDefinition, IOverlayDefinition, IQueryInterface
public class _NeedleAnnotationOverlayDefinition : _LineAnnotationDefinition, IAnnotationOverlayDefinition, ILegendOverlayDefinition, ILineAnnotationDefinition, IOverlayDefinition, IQueryInterface