okToPrint

Check to see if the PDF file allows printing.
[read-only property] okToPrint([out, retval] VARIANT_BOOL *ok)
This function returns false if the PDF file is encrypted and does not allow printing. The owner password can be used to circumvent this: if a valid owner password was supplied to loadFileWithPassword or loadStreamWithPassword, this function will always return true.

If this function returns zero, the printing and PostScript conversion functions will return errors.

VB6:
If Not pdf.okToPrint Then ' can't print this document ... End If