Does PDFNet support form flattening?
Form ‘flattening’ refers to the operation that changes active form fields into a static area that is part of the PDF document, just like the other text and images in the document. A completely flattened PDF form does not have any widget annotations or interactive fields. Using Field.Flatten() or Page.FlattenField() method it is possible to merge individual field appearances with the page content. PDFNet also allows you to flatten all forms in the document in a single function call (PDFDoc.FlattenFields()). Note that it is not possible to undo Field.Flatten() operation. An alternative approach to set the field as read only, that can be programmatically reversed, is using Field.SetFlag(Field::e_read_only, true) method.
