property Permissions;
Returns the owner-password permission bits as decoded from the /Encrypt dictionary.
Bit layout: bit3 = Print, bit4 = Modify, bit5 = Copy, bit6 = Annotate, bit9 = FillForms, bit10 = Accessibility, bit11 = Assemble, bit12 = HighQualityPrint.
Wraps the corresponding PDFium API and exposes it as a TPdf instance member so consumers do not have to manage FPDF_DOCUMENT handles directly.
Pdf1.Active before calling page-scoped operations; methods that require an open document raise EPdfError otherwise.SaveToFile to persist.
if Pdf1.Active then
Pdf1.Permissions;