'宣言 Public Class PdfImage Inherits PdfImageObjectBase Implements GrapeCity.Documents.Drawing.IImage, GrapeCity.Documents.Pdf.Graphics.IXObject, GrapeCity.Documents.Pdf.IPdfImage, GrapeCity.Documents.Pdf.Spec.IPdfDict, GrapeCity.Documents.Pdf.Spec.IPdfObject, GrapeCity.Documents.Pdf.Structure.IContentItem