PowerBuilder

Set a MIME Body, Preserving Content Headers

Demonstrates the Chilkat Mime.SetBody method, which sets the current part's body while preserving the existing content headers (Content-Type, charset, Content-Transfer-Encoding). The only argument is the body text; it is a void method.

Background: Unlike the SetBodyFrom... methods, which set both the content and the headers that describe it, SetBody replaces only the body text and leaves the existing Content-Type and encoding in place. That is what you want when the media type is already correct and you simply need to swap in new content — updating a templated part, for instance — without re-declaring its type.

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integer li_rc
integer li_Success
oleobject loo_Mime
string ls_MimeText

li_Success = 0

//  Demonstrates the Mime.SetBody method, which sets the current part's body while preserving the
//  existing content headers (Content-Type, charset, Content-Transfer-Encoding).  The only argument
//  is the body text.  It is a void method.

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

//  Establish the content headers first.
li_Success = loo_Mime.SetBodyFromPlainText("initial")
if li_Success = 0 then
    Write-Debug loo_Mime.LastErrorText
    destroy loo_Mime
    return
end if

//  Replace just the body text, keeping the existing Content-Type and encoding.
loo_Mime.SetBody("This is the replacement body text.")

ls_MimeText = loo_Mime.GetMime()
if loo_Mime.LastMethodSuccess = 0 then
    Write-Debug loo_Mime.LastErrorText
    destroy loo_Mime
    return
end if

Write-Debug ls_MimeText


destroy loo_Mime