[no subject]

GMimeStream* stream =
g_mime_stream_mem_new_with_buffer(static_cast<char*>(ptr),dataSize);
g_mime_stream_seek (stream, 0, GMIME_STREAM_SEEK_END);
g_mime_stream_write (stream, "\n", 1); // or \r\n if the buffer you are
giving it uses CRLF line endings
g_mime_stream_reset (stream);

Then pass it off to the parser like you do in the code you pasted.

Hope that helps,

Jeff