property FormType;
document에 AcroForm field, XFA, 또는 form이 전혀 없는지 알려줍니다
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.
Pdf1.Active를 확인하세요. open document가 필요하면 그렇지 않을 때 EPdfError가 발생합니다SaveToFile를 호출하세요
if Pdf1.Active then
Pdf1.FormType;