EnumOptionalContentMembershipExpression
Content Streams and Optional Content Groups
Description
Flattens the membership /VE tree into prefix-order expression items
Syntax
Function TPDFlib.EnumOptionalContentMembershipExpression(MembershipID: Integer; Out Expression: Array Of TPDFlibOCMDExpressionItem): Integer;Return values
Returns the complete expression item count, or 0 when no valid expression is available
Remarks
Call with an empty output array to obtain the required capacity
Malformed expressions, unknown operators, references outside the selected document and nesting beyond 64 levels are rejected