Reading graphic annotations with itextsharp

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C#

itextsharp

I need to read the free draw (pencil) annotations of a PDF using ITextSharp. I can get the annotations but do not know how to get the line drawn graphics.

What I have tried:

<pre>        for (int i = 1; i <= reader.NumberOfPages; i++)
        {

            PdfDictionary page = reader.GetPageN(i);
            PdfArray annotsArray = null;

            if (page.GetAsArray(PdfName.ANNOTS) == null)
                continue;

            annotsArray = page.GetAsArray(PdfName.ANNOTS);
            for (System.util.ListIterator< PdfObject > iter = annotsArray.GetListIterator(); iter.HasNext();)
            {

                PdfDictionary annot = (PdfDictionary)PdfReader.GetPdfObject(iter.Next());

            }
        }