TPDFlibOCMDExpressionItem

Data types

Description

Represents one operand or operator in the prefix form of a PDF optional content visibility expression

TPDFlibOCMDExpressionItem = Record
  Kind: TPDFlibOCMDExpressionItemKind;
  OptionalContentGroupID: Integer;
  OperandCount: Integer;
End;

Kind	The group or logical operator kind
OptionalContentGroupID	The selected-document group handle for `oekGroup`, otherwise 0
OperandCount	0 for a group, 1 for `oekNot`, and one or more for `oekAnd` or `oekOr`

Prefix order avoids temporary expression handles and permits one-pass validation, serialisation and enumeration