'宣言 Public MustInherit Class PolygonAnnotationBase Inherits MarkupAnnotation Implements GrapeCity.Documents.Common.IOwnedObject, GrapeCity.Documents.Pdf.IDocProvider, GrapeCity.Documents.Pdf.Structure.IContentItem
public abstract class PolygonAnnotationBase : MarkupAnnotation, GrapeCity.Documents.Common.IOwnedObject, GrapeCity.Documents.Pdf.IDocProvider, GrapeCity.Documents.Pdf.Structure.IContentItem