Allmost all handlers have id of item in app_data argument of handler callback. This allows to not create many items hander registry and generalize item handler registry. But visbible handler doesn't have this feature. Please add this feature also for visible handler.
Allmost all handlers have id of item in app_data argument of handler callback. This allows to not create many items hander registry and generalize item handler registry. But visbible handler doesn't have this feature. Please add this feature also for visible handler.