يحافظ إدخال API هذا على المعرّفات والتواقيع وكتل الكود ومصطلحات PDF بصيغتها الأصلية.
Component: TPdf · Unit: PDFium
Read-only flag — True after the PDF library DLL has been loaded into the process.
Syntax
property Loaded: Boolean;
Description
Returns True after the PDF library DLL has been loaded into the process.
The PDFium runtime must be loaded once per process; TPdf.LoadLibrary is called automatically on first Active := True.
Read at any time, including before any TPdf instance exists (it is a class function).
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.Loaded then
Memo1.Lines.Add('Loaded = True')
else
Memo1.Lines.Add('Loaded = False');
See Also