You may have arrived here by right clicking on a text label in the Packet Details, then selecting Wiki Protocol Page
Worked on in !2897 (merged) - Qt: URLs to Display Filter Reference and Wiki Protocol pages
There is more than one way to add a text label. Examples below use proto_tree_add_subtree().
See README.dissector and proto.c:
/* Add a text-only node that creates a subtree underneath.
*/
proto_tree *
proto_tree_add_subtree(proto_tree *tree, tvbuff_t *tvb, gint start, gint length, gint idx, proto_item **tree_item, const char *text)
{
return proto_tree_add_subtree_format(tree, tvb, start, length, idx, tree_item, "%s", text);
}
Examples:
packet-tcp.c
tree=proto_tree_add_subtree(parent_tree, tvb, 0, 0, ett_tcp_timestamps, &item, "Timestamps");
proto_item_set_generated(item);
ssh2_tree = proto_tree_add_subtree(tree, tvb, offset, -1, ett_ssh2, NULL, wmem_strbuf_get_str(title));
TODO: add info to Dev Guide and a screen shot of the foo.dissector Packet Details.