PDFiumVCL Docs

Loaded property

Component: TPdf · Unit: PDFium

Read-only flag — True after the PDF library DLL has been loaded into the process.

Syntax

property Loaded: Boolean; // read only

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

LoadLibrary, UnloadLibrary, V8FeaturesAvailable