std::vector<x::mime::encoder> sections; x::headersimpl<x::headersbase::lf_endl> headers; // ... x::mime::encoder section= x::make_multipart_section(headers, "alternative", sections.begin(), sections.end());
x::mime::make_multipart_section()
contructs a multipart MIME section.
x::mime::make_multipart_section supplies the
“Content-Type: multipart/subtype”
to the headers provided by its first parameter, with
the second parameter specifying the subtype.
The third and the fourth parameters are beginning and ending iterator
over an input sequence of x::mime::encoders
of MIME entities that make up the multipart entity.
The fifth, optional, parameter specifies the targeted line width of the constructed “Content-Type” header, and defaults to 76 characters. If the constructed header is projected to exceed this width (it usually is), it gets folded. Setting the fifth optional parameter to 0 disables folding, and the constructed header always consists of one line.