Fetch an IMAP Attachment into a BinData

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Demonstrates the Chilkat Imap.FetchAttachmentBd method, which stores one attachment's bytes in a BinData object. The first argument is the Email, the second is the zero-based attachment index, and the third is the BinData, which is cleared before the operation. This example fetches the first attachment and prints its byte count.

integer li_rc
integer li_Success
oleobject loo_Imap
integer li_HeadersOnly
integer li_UseUid
integer li_SeqNum
oleobject loo_Email
integer li_NumAttach
oleobject loo_Bd

li_Success = 0

//  Demonstrates the Imap.FetchAttachmentBd method, which downloads one attachment's bytes into
//  a BinData object.  The 1st argument is the Email, the 2nd is the zero-based attachment
//  index, and the 3rd is the BinData (which is cleared first).
//  
//  The message is fetched headers-only, then the attachment is downloaded on demand.

loo_Imap = create oleobject
li_rc = loo_Imap.ConnectToNewObject("Chilkat.Imap")
if li_rc < 0 then
    destroy loo_Imap
    MessageBox("Error","Connecting to COM object failed")
    return
end if

loo_Imap.Ssl = 1
loo_Imap.Port = 993

li_Success = loo_Imap.Connect("imap.example.com")
if li_Success = 0 then
    Write-Debug loo_Imap.LastErrorText
    destroy loo_Imap
    return
end if

li_Success = loo_Imap.Login("user@example.com","myPassword")
if li_Success = 0 then
    Write-Debug loo_Imap.LastErrorText
    destroy loo_Imap
    return
end if

li_Success = loo_Imap.SelectMailbox("Inbox")
if li_Success = 0 then
    Write-Debug loo_Imap.LastErrorText
    destroy loo_Imap
    return
end if

//  Fetch only the message headers.  Attachment bodies are NOT downloaded, but the ckx-imap-*
//  metadata describing the attachments is present, so the attachment info methods still work.
li_HeadersOnly = 1
li_UseUid = 0
li_SeqNum = 1
loo_Email = create oleobject
li_rc = loo_Email.ConnectToNewObject("Chilkat.Email")

li_Success = loo_Imap.FetchEmail(li_HeadersOnly,li_SeqNum,li_UseUid,loo_Email)
if li_Success = 0 then
    Write-Debug loo_Imap.LastErrorText
    destroy loo_Imap
    destroy loo_Email
    return
end if

li_NumAttach = loo_Imap.GetMailNumAttach(loo_Email)
if li_NumAttach > 0 then
    //  Download just the first attachment's bytes from the server into a BinData.
    loo_Bd = create oleobject
    li_rc = loo_Bd.ConnectToNewObject("Chilkat.BinData")

    li_Success = loo_Imap.FetchAttachmentBd(loo_Email,0,loo_Bd)
    if li_Success = 0 then
        Write-Debug loo_Imap.LastErrorText
        destroy loo_Imap
        destroy loo_Email
        destroy loo_Bd
        return
    end if

    Write-Debug "Attachment size: " + string(loo_Bd.NumBytes) + " bytes"
end if

li_Success = loo_Imap.Disconnect()
if li_Success = 0 then
    Write-Debug loo_Imap.LastErrorText
    destroy loo_Imap
    destroy loo_Email
    destroy loo_Bd
    return
end if



destroy loo_Imap
destroy loo_Email
destroy loo_Bd