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Component: TPdf · Unit: PDFium
Read-only flag — True when XFA BSTR helper exports are present in the loaded PDFium DLL.
Syntax
property XfaBStrHelpersAvailable: Boolean;
Description
Returns True when XFA BSTR helper exports are present in the loaded PDFium DLL.
XFA support requires a special PDFium build with FPDFXFA_* exports; without it, XFA documents render as the static fallback only.
Class function; checks the DLL for the symbols at runtime.
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.XfaBStrHelpersAvailable then
Memo1.Lines.Add('XfaBStrHelpersAvailable = True')
else
Memo1.Lines.Add('XfaBStrHelpersAvailable = False');
See Also