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.TH curl_mime_subparts 3 "September 27, 2023" "libcurl 8.4.0" "libcurl"

.SH NAME
curl_mime_subparts - set sub-parts of a multipart mime part
.SH SYNOPSIS
.nf
#include <curl/curl.h>

CURLcode curl_mime_subparts(curl_mimepart *part, curl_mime *subparts);
.fi
.SH DESCRIPTION
\fIcurl_mime_subparts(3)\fP sets a multipart mime part's content from a mime
structure.

\fIpart\fP is a handle to the multipart part.

\fIsubparts\fP is a mime structure handle holding the sub-parts. After
\fIcurl_mime_subparts(3)\fP 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 \fIsubparts\fP to NULL.
.SH EXAMPLE
.nf
 /* The inline part is an alternative proposing the html and the text
    versions of the email. */
 alt = curl_mime_init(curl);

 /* 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(mime);
 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);
.fi
.SH AVAILABILITY
As long as at least one of HTTP, SMTP or IMAP is enabled. Added in 7.56.0.
.SH RETURN VALUE
CURLE_OK or a CURL error code upon failure.
.SH "SEE ALSO"
.BR curl_mime_addpart (3),
.BR curl_mime_init (3)