gstk_rectangle
create(DB, Gstkid, Opts) -> term()
config(DB, Gstkid, Opts) -> term()
read(DB, Gstkid, Opt) -> term()
delete(DB, Gstkid) -> term()
destroy(DB, Canvas, Item) -> term()
event(DB, Gstkid, Etype, Edata, Args) -> term()
option(Option, Gstkid, Canvas, DB, AItem) -> term()
read_option(Option, Gstkid, Canvas, DB, AItem) -> term()