PDFlib 8 Windows COM/.NET Tutorial

Cookbook A full code sample can be found in the Cookbook topic general/permission_settings.
Table 3.3 Access restriction keywords for the permissions option in begin_document( )
keyword
noprint
nomodify
nocopy
noannots
noforms
noaccessible
noassemble
nohiresprint
plainmetadata
explanation
Acrobat will prevent printing the file.
Acrobat will prevent editing or cropping pages and creating or changing form fields.
Acrobat will prevent copying and extracting text or graphics; the accessibility interface will be
controlled by noaccessible.
Acrobat will prevent creating or changing annotations and form fields.
(PDF 1.4; implies nomodify and noannots) Acrobat will prevent form field filling.
(PDF 1.4) Acrobat will prevent extracting text or graphics for accessibility purposes (such as a
screenreader program).
(PDF 1.4; implies nomodify) Acrobat will prevent inserting, deleting, or rotating pages and
creating bookmarks and thumbnails.
(PDF 1.4) Acrobat will prevent high-resolution printing. If noprint isn’t set, printing is restricted to
the »print as image« feature which prints a low-resolution rendition of the page.
(PDF 1.5) Keep XMP document metadata unencrypted even for encrypted documents.
Note When serving PDFs over the Web, clients can always produce a local copy of the document
with their browser. There is no way for a PDF to prevent users from saving a local copy.
Encrypted file attachments. In PDF 1.6 and above file attachments can be encrypted
even in otherwise unprotected documents. This can be achieved by supplying the
attachmentpassword option to begin_document( ).
78 Chapter 3: Creating PDF Documents (Edition for COM, .NET, and REALbasic)