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XfaBStrHelpersAvailable 函数

此 API 条目保留标识符、签名、代码块和 PDF 术语的原始形式。
组件: TPdf  ·  单元: PDFium
只读标志——当已加载的 PDFium DLL 中存在 XFA BSTR 辅助导出时为 True

语法

function XfaBStrHelpersAvailable: Boolean;

说明

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.

备注

示例

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

另请参阅

XFA, V8FeaturesAvailable