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Get the Content-Type of a Related Item

Demonstrates the Chilkat Email.GetRelatedContentType method, which returns the Content-Type of the Nth related content item in an email. The index is zero-based. This example adds a related style sheet and reads its content type.

Background: Each related item declares a Content-Type — image/png for an inline image, text/css for a style sheet, and so on — that tells the rendering client how to use it. Reading the content type lets a program enumerate a message's embedded resources and act on them by kind, for example collecting every inline image while ignoring the style sheets.

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integer li_rc
oleobject loo_Email
string ls_Ct

//  Demonstrates the GetRelatedContentType method, which returns the Content-Type of the Nth
//  related content item in an email.  The index is zero-based.

loo_Email = create oleobject
li_rc = loo_Email.ConnectToNewObject("Chilkat.Email")
if li_rc < 0 then
    destroy loo_Email
    MessageBox("Error","Connecting to COM object failed")
    return
end if
loo_Email.Subject = "GetRelatedContentType example"

//  The HTML references the style sheet by name (Content-Location).
loo_Email.SetHtmlBody("<html><head><link rel=~"stylesheet~" href=~"styles.css~"/></head><body>Styled.</body></html>")

//  Add the related style sheet (index 0).
loo_Email.AddRelatedString2("styles.css","body { color: navy; }","utf-8")

//  Read the Content-Type of the first related item (index 0).
ls_Ct = loo_Email.GetRelatedContentType(0)
Write-Debug "Related item 0 Content-Type: " + ls_Ct


destroy loo_Email