Canvas.groupSourceA group is a [full_item] container_item. Its kind is "canvas_group".
inherit container_itemmethod as_group : groupmethod items : full_item listmethod add_item : ?x:int -> ?y:int -> full_item -> unitAdds the given item to group. The item's coordinates can be set with x and y optional arguments.
method remove_item : full_item -> unitRemoves the given item from the group.
method raise : full_item -> unitRaises the given item above all the other items of the group.