PDFiumVCL 文件

PdfVersion property

此 API 條目保留識別符號、簽名、程式碼塊和 PDF 術語的原始形式。

Component: TPdf · Unit: PDFium

Read-only flag — the PDF specification version of the open document (e.g. pv14, pv17, pv20).

Syntax

property PdfVersion: TPdfVersion; // read only

Description

Returns the PDF specification version of the open document (e.g. pv14, pv17, pv20).

PDF version is recorded as a comment in the file header and (optionally) overridden by the /Version entry in the catalog.

Read-only at the TPdf surface; to write a different version use the TSaveOption set of SaveToFile.

Remarks

Treat the value as immutable for the lifetime of the open document — reopening the file or changing pages may yield a different result.
Surface this value in your UI to drive feature toggles (for example, disable accessibility export when IsTagged is False).
All scalar boolean / type properties on TPdf are inexpensive O(1) reads.

Example

if Pdf1.Active and Pdf1.PdfVersion then
Memo1.Lines.Add('PdfVersion = True')
else
Memo1.Lines.Add('PdfVersion = False');

See Also

SaveAs, PageCount, Permissions