Denna API-post behåller identifierare, signaturer, kodblock och PDF-termer i ursprunglig form.
Component: TPdf · Unit: PDFium
Tells you whether the document contains AcroForm fields, XFA, or no forms at all.
Syntax
property FormType;
Description
Tells you whether the document contains AcroForm fields, XFA, or no forms at all.
Read-only; useful to decide whether to enable form-editing UI.
Wraps the corresponding PDFium API and exposes it as a TPdf instance member so consumers do not have to manage FPDF_DOCUMENT handles directly.
Remarks
- Always check
Pdf1.Active before calling page-scoped operations; methods that require an open document raise EPdfError otherwise.
- Document-edit methods (AddPage / DeletePage / UpdatePage / CreateAnnotation) leave the in-memory document dirty — remember to call
SaveToFile to persist.
- Class methods (LoadLibrary / UnloadLibrary / GetRecommendedV8Flags) can be called without a TPdf instance.
Example
if Pdf1.Active then
Pdf1.FormType;
See Also