PowerBuilder

Get the Content-Type of the Nth Matching Part

Demonstrates the Chilkat Email.GetNthContentType method, which returns the Content-Type of the Nth non-multipart MIME part matching a content-type pattern. The first argument is the zero-based index among the matching parts, the second is the pattern (exact or wildcard), the third is an inlineOnly flag, and the fourth is an excludeAttachments flag. This example reads the content type of the first text/* part.

Background: Where GetNthTextPartOfType returns a matching part's content, GetNthContentType returns its exact type. A wildcard pattern like text/* can match several parts (say text/plain and text/html), so pairing this with GetNumPartsOfType lets you enumerate the parts and learn precisely what each one is before fetching it.

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integer li_rc
oleobject loo_Email
string ls_Ct

//  Demonstrates the GetNthContentType method, which returns the Content-Type of the Nth
//  non-multipart MIME part matching a Content-Type pattern.  The first argument is the
//  zero-based index among matching parts, the second is the pattern, the third is inlineOnly,
//  and the fourth is excludeAttachments.

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 = "GetNthContentType example"

loo_Email.SetTextBody("This is the plain-text version.","text/plain")
loo_Email.AddHtmlAlternativeBody("<html><body>This is the HTML version.</body></html>")

//  Get the content type of the first (index 0) part matching text/*.
ls_Ct = loo_Email.GetNthContentType(0,"text/*",0,0)
Write-Debug "First text/* part content type: " + ls_Ct


destroy loo_Email