PureBasic

Create a multipart/related MIME Entity

Demonstrates the Chilkat Mime.NewMultipartRelated method, which initializes the object as an empty multipart/related entity. It takes no arguments; the primary part and its related resources are then appended.

Note: The file paths are relative to the application's current working directory. Absolute paths may also be used. Supply the paths appropriate to your own environment.

Background: multipart/related ties a primary part to the resources it references — most commonly an HTML body and the inline images it embeds via cid: references. Unlike a plain attachment, a related image is displayed within the message rather than listed separately. The HTML part comes first, followed by each referenced resource with a matching Content-ID.

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IncludeFile "CkMime.pb"

Procedure ChilkatExample()

    success.i = 0

    ;  Demonstrates the Mime.NewMultipartRelated method, which initializes the object as an empty
    ;  multipart/related entity, clearing any existing content.  It takes no arguments.

    mime.i = CkMime::ckCreate()
    If mime.i = 0
        Debug "Failed to create object."
        ProcedureReturn
    EndIf

    success = CkMime::ckNewMultipartRelated(mime)
    If success = 0
        Debug CkMime::ckLastErrorText(mime)
        CkMime::ckDispose(mime)
        ProcedureReturn
    EndIf

    ;  multipart/related groups a primary part with the resources it references, such as an HTML body
    ;  and the inline images it displays.
    htmlPart.i = CkMime::ckCreate()
    If htmlPart.i = 0
        Debug "Failed to create object."
        ProcedureReturn
    EndIf

    success = CkMime::ckSetBodyFromHtml(htmlPart,"<html><body><img src=" + Chr(34) + "cid:logo" + Chr(34) + "></body></html>")
    If success = 0
        Debug CkMime::ckLastErrorText(htmlPart)
        CkMime::ckDispose(mime)
        CkMime::ckDispose(htmlPart)
        ProcedureReturn
    EndIf

    success = CkMime::ckAppendPart(mime,htmlPart)
    If success = 0
        Debug CkMime::ckLastErrorText(mime)
        CkMime::ckDispose(mime)
        CkMime::ckDispose(htmlPart)
        ProcedureReturn
    EndIf

    success = CkMime::ckAppendPartFromFile(mime,"qa_data/logo.png")
    If success = 0
        Debug CkMime::ckLastErrorText(mime)
        CkMime::ckDispose(mime)
        CkMime::ckDispose(htmlPart)
        ProcedureReturn
    EndIf

    Debug "Number of parts: " + Str(CkMime::ckNumParts(mime))


    CkMime::ckDispose(mime)
    CkMime::ckDispose(htmlPart)


    ProcedureReturn
EndProcedure