THPDFPage.AttachSignatureFieldLock Method

Attaches a FieldMDP lock dictionary to a signature field so signing the field controls which AcroForm fields may change afterwards

Declaration

procedure AttachSignatureFieldLock(const FieldName: AnsiString; Action: THPDFFieldLockAction; const Fields: array of AnsiString);

HPDFDoc

Name	Purpose
`FieldName`	AcroForm field name or field dictionary targeted by the helper
`Action`	Selects whether all fields, only the listed fields, or all fields except the listed fields are locked
`Fields`	Field names used by the Include or Exclude lock action

This member does not return a value

The named signature field must already exist in the current document
The Fields array is ignored when Action selects all fields
Attach the lock before preparing byte ranges so the policy is covered by the signature