NAME

       curl_mime_subparts - set sub-parts of a multipart mime part

SYNOPSIS

       #include <curl/curl.h>

       CURLcode curl_mime_subparts(curl_mimepart *part, curl_mime *subparts);

DESCRIPTION

       curl_mime_subparts(3) sets a multipart mime part's content from a mime structure.

       part is a handle to the multipart part.

       subparts  is  a  mime  structure handle holding the sub-parts. After curl_mime_subparts(3)
       succeeds, the mime structure handle belongs to the multipart part and must  not  be  freed
       explicitly. It may however be updated by subsequent calls to mime API functions.

       Setting  a part's contents multiple times is valid: only the value set by the last call is
       retained. It is possible to unassign previous part's contents by setting subparts to NULL.

PROTOCOLS

       This functionality affects http, imap and smtp

EXAMPLE

       static char *inline_html = "<title>example</title>";
       static char *inline_text = "once upon the time";

       int main(void)
       {
         CURL *curl = curl_easy_init();
         if(curl) {
           struct curl_slist *slist;

           /* The inline part is an alternative proposing the html and the text
              versions of the email. */
           curl_mime *alt = curl_mime_init(curl);
           curl_mimepart *part;

           /* HTML message. */
           part = curl_mime_addpart(alt);
           curl_mime_data(part, inline_html, CURL_ZERO_TERMINATED);
           curl_mime_type(part, "text/html");

           /* Text message. */
           part = curl_mime_addpart(alt);
           curl_mime_data(part, inline_text, CURL_ZERO_TERMINATED);

           /* Create the inline part. */
           part = curl_mime_addpart(alt);
           curl_mime_subparts(part, alt);
           curl_mime_type(part, "multipart/alternative");
           slist = curl_slist_append(NULL, "Content-Disposition: inline");
           curl_mime_headers(part, slist, 1);
         }
       }

AVAILABILITY

       Added in curl 7.56.0

RETURN VALUE

       CURLE_OK or a CURL error code upon failure.

SEE ALSO

       curl_mime_addpart(3), curl_mime_init(3)