TXFAHeadlessPDFOptions
Unit: HPDFXFAHeadless
TXFAHeadlessPDFOptions = record
PageWidth, PageHeight: Double;
Editable: Boolean;
CaptionFontFamilies: THPDFHeadlessRichTextFontFamilies;
MaxInputBytes, MaxFontBytes, MaxBytes, MaxObjectBytes: Integer;
MaxObjects, MaxPages, MaxFields, MaxGlyphs: Integer;
CancellationToken: THPDFCancellationToken;
ScriptOptions: TXFAFormScriptOptions;
class function Default: TXFAHeadlessPDFOptions; static;
end;| Member | Default and behavior |
|---|---|
| PageWidth, PageHeight | 595 × 842 PDF points; both must be finite and positive |
| Editable | True; False sets every generated field's readOnly flag, and XFA access can independently restrict individual fields |
| CaptionFontFamilies | Empty; optional named real style-font programs for Boolean and push button captions, with the original TrueTypeFont supplying the default regular face; see CaptionFontFamilies |
| MaxInputBytes | 8 MiB; XDP input length is checked before parsing |
| MaxFontBytes | 8 MiB; the original default font length and each rich caption's aggregate used style-font program bytes are checked before embedding |
| MaxBytes | 64 MiB; complete serialized candidate limit, aggregate embedded font and image streams, and individual image decoding working buffers |
| MaxObjectBytes | 16 MiB; each serialized object, appearance stream, encoded image and decoded image or alpha stream is bounded |
| MaxObjects | 100000; native indirect graph objects, including appearance and font objects; minimum six |
| MaxPages | 1000; page indices from XFA layout must fit the limit |
| MaxFields | 10000; emitted widget instances, including repeated occurrences and every radio member; a shared radio parent does not consume an extra widget slot |
| MaxGlyphs | 1000000; aggregate visible text UTF-16 code units, with a supplementary character consuming two units; a Boolean caption is counted once across all of its states, push button captions count each separately generated state, and each appearance also retains the native maximum of 65535 glyphs |
| CancellationToken | nil; an optional caller-owned THPDFCancellationToken that is never freed by the adapter |
| ScriptOptions | TXFAFormScriptOptions.Default; JavaScript is disabled unless explicitly enabled and its existing execution budgets remain active |
Start from Default, then lower limits or supply cancellation as required; nonpositive byte and count limits are rejected
Automatic XFA creation describes supported native consumers and the destination transaction boundary