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(PowerBuilder) Build a multipart/related MIME Message

Demonstrates how to construct a multipart/related MIME message containing HTML and a related JPG image.

Chilkat ActiveX Downloads

ActiveX for 32-bit and 64-bit Windows

integer li_rc
integer li_Success
oleobject loo_Mime
oleobject loo_Crypt
oleobject loo_SbContentId
oleobject loo_SbHtml
integer li_NumReplacements
oleobject loo_HtmlMime
oleobject loo_Fac
oleobject loo_JpgMime
oleobject loo_SbContentIdHdr

// This example requires the Chilkat API to have been previously unlocked.
// See Global Unlock Sample for sample code.

// Start with an empty MIME object...
loo_Mime = create oleobject
li_rc = loo_Mime.ConnectToNewObject("Chilkat_9_5_0.Mime")
if li_rc < 0 then
    destroy loo_Mime
    MessageBox("Error","Connecting to COM object failed")
    return
end if

// Initialize it as multipart/related.
loo_Mime.NewMultipartRelated()

// Set a top-level MIME header field.
loo_Mime.SetHeaderField("Subject","Test HTML email with JPG image.")

// Generate a Content-ID.  This will contain random data that will allow
// the HTML's "img" tag to reference the image part in the MIME.
loo_Crypt = create oleobject
li_rc = loo_Crypt.ConnectToNewObject("Chilkat_9_5_0.Crypt2")

loo_Crypt.EncodingMode = "hex"

loo_SbContentId = create oleobject
li_rc = loo_SbContentId.ConnectToNewObject("Chilkat_9_5_0.StringBuilder")

loo_SbContentId.Append("part1.")
loo_SbContentId.Append(loo_Crypt.GenRandomBytesENC(4))
loo_SbContentId.Append(".")
loo_SbContentId.Append(loo_Crypt.GenRandomBytesENC(4))
loo_SbContentId.Append("@chilkatsoft.com")

// Create the HTML body.
loo_SbHtml = create oleobject
li_rc = loo_SbHtml.ConnectToNewObject("Chilkat_9_5_0.StringBuilder")

loo_SbHtml.Append("<html><head>~r~n")
loo_SbHtml.Append("<meta http-equiv=\"Content-Type\" content=\"text/html; charset=utf-8\">~r~n")
loo_SbHtml.Append("  </head>~r~n")
loo_SbHtml.Append("  <body bgcolor=\"#FFFFFF\" text=\"#000000\">~r~n")
loo_SbHtml.Append("    <p>This is a test.&nbsp; <img src=\"cid:CONTENT_ID\" height=\"20\" width=\"20\"></p>~r~n")
loo_SbHtml.Append("  </body>~r~n")
loo_SbHtml.Append("</html>~r~n")
li_NumReplacements = loo_SbHtml.Replace("CONTENT_ID",loo_SbContentId.GetAsString())

// Create the HTML MIME part.
loo_HtmlMime = create oleobject
li_rc = loo_HtmlMime.ConnectToNewObject("Chilkat_9_5_0.Mime")

loo_HtmlMime.SetBodyFromHtml(loo_SbHtml.GetAsString())
loo_HtmlMime.Encoding = "8bit"
loo_HtmlMime.Charset = "utf-8"

// Load our JPG image from a file.
loo_Fac = create oleobject
li_rc = loo_Fac.ConnectToNewObject("Chilkat_9_5_0.FileAccess")

loo_JpgBytes = loo_Fac.ReadEntireFile("qa_data/jpg/starfish20.jpg")

// Create an image/jpeg MIME part.
loo_JpgMime = create oleobject
li_rc = loo_JpgMime.ConnectToNewObject("Chilkat_9_5_0.Mime")

loo_JpgMime.SetBodyFromBinary(loo_JpgBytes)
// Setting the following properties has the effect of adding
// the Content-Type, Content-Transfer-Encoding, and Content-Disposition header fields.
// These header fields could also be set via the SetHeaderField method, in which case
// the values of the affected properties would be updated.
loo_JpgMime.ContentType = "image/jpeg"
loo_JpgMime.Name = "starfish20.jpg"
loo_JpgMime.Encoding = "base64"
loo_JpgMime.Disposition = "inline"
loo_JpgMime.Filename = "starfish20.jpg"

loo_SbContentIdHdr = create oleobject
li_rc = loo_SbContentIdHdr.ConnectToNewObject("Chilkat_9_5_0.StringBuilder")

loo_SbContentIdHdr.Append("<CONTENT_ID>")
li_NumReplacements = loo_SbContentIdHdr.Replace("CONTENT_ID",loo_SbContentId.GetAsString())
loo_JpgMime.SetHeaderField("Content-ID",loo_SbContentIdHdr.GetAsString())

// Add both parts as children of the multipart/related
loo_Mime.AppendPart(loo_HtmlMime)
loo_Mime.AppendPart(loo_JpgMime)
Write-Debug loo_Mime.GetMime()

// --------------------------------------------------------------
// --------------------------------------------------------------
// This example builds the following MIME message.  The boundary
// and Content-ID strings contain random data and will be different.  

// Content-Type: multipart/related; boundary="------------A940F1230E6F0105F03DB2CB"
// Subject: Test HTML email with JPG image.
// 
// --------------A940F1230E6F0105F03DB2CB
// Content-Type: text/html; charset="utf-8"
// Content-Transfer-Encoding: 8bit
// 
// <html><head>
// <meta http-equiv="Content-Type" content="text/html; charset=utf-8">
//   </head>
//   <body bgcolor="#FFFFFF" text="#000000">
//     <p>This is a test.&nbsp; <img src="cid:part1.E16AE3B4.1505C436@chilkatsoft.com" height="20" width="20"></p>
//   </body>
// </html>
// 
// --------------A940F1230E6F0105F03DB2CB
// Content-Transfer-Encoding: base64
// Content-Type: image/jpeg; name="starfish20.jpg"
// Content-Disposition: inline; filename="starfish20.jpg"
// Content-ID: <part1.E16AE3B4.1505C436@chilkatsoft.com>
// 
// /9j/4AAQSkZJRgABAQEASABIAAD//gAmRmlsZSB3cml0dGVuIGJ5IEFkb2JlIFBob3Rvc2hvcD8g
// NC4w/9sAQwAQCwwODAoQDg0OEhEQExgoGhgWFhgxIyUdKDozPTw5Mzg3QEhcTkBEV0U3OFBtUVdf
// YmdoZz5NcXlwZHhcZWdj/9sAQwEREhIYFRgvGhovY0I4QmNjY2NjY2NjY2NjY2NjY2NjY2NjY2Nj
// Y2NjY2NjY2NjY2NjY2NjY2NjY2NjY2NjY2Nj/8IAEQgAFAAUAwERAAIRAQMRAf/EABcAAAMBAAAA
// AAAAAAAAAAAAAAIDBAX/xAAYAQADAQEAAAAAAAAAAAAAAAABAgMEAP/aAAwDAQACEAMQAAAB2kZY
// NNEijWKddfTmLgALWH//xAAbEAACAgMBAAAAAAAAAAAAAAABAgMRAAQSE//aAAgBAQABBQL0XqN+
// pM2aqJGMiqFFCyg7z//EABwRAAICAgMAAAAAAAAAAAAAAAERAAIQIQMSUf/aAAgBAwEBPwHqU5aq
// Axx+y1tMQl4elj//xAAcEQEAAQUBAQAAAAAAAAAAAAABEQACEBIhA1H/2gAIAQIBAT8B3Bhqy7Zc
// enyiwmGgDhiOzj//xAAdEAABAwUBAAAAAAAAAAAAAAABAAIREBIhIkFR/9oACAEBAAY/ArZyn+Cg
// xtxWuJaoCnqDuin/xAAcEAABBAMBAAAAAAAAAAAAAAABABEhYRAxQVH/2gAIAQEAAT8hkEwPUUR9
// DYfE4nxtRpIkBTsayuALIiuY/9oADAMBAAIAAwAAABDWPTsf/8QAGhEAAwADAQAAAAAAAAAAAAAA
// AAEREDFBIf/aAAgBAwEBPxC0DVPcWm+Ce4OesrkE6bjH/8QAGBEBAQEBAQAAAAAAAAAAAAAAAREA
// QRD/2gAIAQIBAT8QahMiOc8YgSrnTY3ELclHXn//xAAcEAEBAAIDAQEAAAAAAAAAAAABEQAhMUFx
// EFH/2gAIAQEAAT8Qn3igmSZSj+c4N4zapMy9IjFV98wncN2iuLFsCEbDGxQkI6RO/n//2Q==
// 
// --------------A940F1230E6F0105F03DB2CB--
// 


destroy loo_Mime
destroy loo_Crypt
destroy loo_SbContentId
destroy loo_SbHtml
destroy loo_HtmlMime
destroy loo_Fac
destroy loo_JpgMime
destroy loo_SbContentIdHdr

 

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