Function SignPDFFile

Signs a pdf file with a digital signature.

Parameters:
string sourceFilename: Filename of the source pdf file
string destinationFilename: Filename of the destination pdf file
string certficateFilename: Filename of the certificate
string certifcatePassword: Password of the certificate
string signatureReason: A reason to display with the signature
string signatureContact: Name of the contact
string signatureLocation: Location, where the file was signed
bool signatureVisible: Adds a visible signature to the file
int signaturePositionLowerLeftX: Lower left x-position
int signaturePositionLowerLeftY: Lower left y-position
int signaturePositionUpperRightX: Upper right x-position
int signaturePositionUpperRightY: Upper right y-position
bool multiSignatures: Allow to add additional signatures after signing the file
ref PDFEncryptor enc: Encryptor Object to use

Return Value:
no return value