loadStreamWithPassword
Load a PDF file from an OLE IStream object, with a password.
loadStreamWithPassword([in] IUnknown *streamObj, [in] BSTR password)
This function loads a PDF file from an OLE IStream object, applying
the specified password, and displays its first page.
The loadStreamWithPassword function throws
an error if the PDF file cannot be
opened.
IMPORTANT: The PDF stream must not be freed or modified until
after closeFile is called.
VB:
Dim stream As IStream
...
viewer.loadStreamWithPassword(stream, "secret")