procedure DeleteAnnotation(Index: Integer)
Removes the annotation at the given index on the current page.
Call UpdatePage afterwards to refresh the rendering cache.
All edits to the current page are buffered in PDFium's in-memory representation. Call UpdatePage to refresh the rendering cache and SaveToFile to persist the changes.
Pdf1.Active on oltava True ja sivu on valittava ennen näiden primitiivien kutsumista
begin
if Pdf1.Active then
begin
Pdf1.MoveTo(100, 100);
Pdf1.LineTo(200, 150);
Pdf1.LineTo(200, 200);
Pdf1.ClosePath;
Pdf1.AddPath(clRed, 1.5, clYellow, fmWinding);
Pdf1.UpdatePage;
end;
end;