Specifying Passwords when Loading from a Stream

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charlesd
Posts: 22
Joined: Thu Oct 20 2005
Location: Orem, Utah
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Specifying Passwords when Loading from a Stream

Post by charlesd » Thu May 25 2006

The documentation for the PDF Creator describes how to use an IStream interface to load pdf data directly from a stream. This is working great.

I can even tell if the pdf data is password protected by looking at the Protected flag of the PDFCreactiveX object. My question is, how can I specify a password to use when opening pdf data from a stream?

Thansk for you help,

Charles

Jose
Amyuni Team
Posts: 550
Joined: Tue Oct 01 2002
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Post by Jose » Mon Jun 05 2006

Hello,

The situation you have described is accomplished by passing the correct passwords to the PDF Creator's Document object before opening the stream.

I have included below a vb 6.0 code snippet which illustrates this.

Hope this helps?

Dim pdfStream As IPersistStreamInit
PDF1.SetLicenseKey LicenseTo, ActivationCode

Const adTypeBinary = 1
Dim strFilePath As String
Dim objStream As Object
Dim objStream2 As Object

'get file or retrieve from database
strFilePath = "c:\temp\stream_emcrypt.pdf"

'Create a stream to load into Control
Set objStream = CreateObject("ADODB.Stream")

objStream.Open
objStream.Type = adTypeBinary
objStream.LoadFromFile strFilePath


'open encrypted document by setting the Document objects "Ownerpassword" and
'"Userpassword" properties
'Owner Password
PDF1.ObjectAttribute("Document", "Ownerpassword") = "my ownerpassword value"
'User Passwpord
PDF1.ObjectAttribute("Document", "Userpassword") = "my userpassword value"


'PDF1 is name of PDF Creator control on form
Set pdfStream = PDF1.Object

'Load stream into control
pdfStream.Load objStream
objStream.Close


PDF1.Refresh

Set objStream = Nothing
Set pdfStream = Nothing

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