![](dotnetdiagramimages/DS_Documents_Pdf_GrapeCity_Documents_Pdf_Annotations_WatermarkAnnotation.png)
'宣言 Public Class WatermarkAnnotation Inherits AnnotationBase Implements GrapeCity.Documents.Common.IOwnedObject, GrapeCity.Documents.Pdf.Spec.IPdfDict, GrapeCity.Documents.Pdf.Spec.IPdfObject, GrapeCity.Documents.Pdf.Structure.IContentItem
public class WatermarkAnnotation : AnnotationBase, GrapeCity.Documents.Common.IOwnedObject, GrapeCity.Documents.Pdf.Spec.IPdfDict, GrapeCity.Documents.Pdf.Spec.IPdfObject, GrapeCity.Documents.Pdf.Structure.IContentItem
System.Object
GrapeCity.Documents.Pdf.Wrappers.PdfWrapperBase
GrapeCity.Documents.Pdf.Wrappers.PdfWrapper<T>
GrapeCity.Documents.Pdf.Wrappers.PdfDictWrapper
GrapeCity.Documents.Pdf.Annotations.AnnotationBase
GrapeCity.Documents.Pdf.Annotations.WatermarkAnnotation