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.

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

       As long as at least one of HTTP, SMTP or IMAP is enabled. Added in 7.56.0.

RETURN VALUE

       CURLE_OK or a CURL error code upon failure.

SEE ALSO

       curl_mime_addpart(3), curl_mime_init(3)