Inserts an item at the specified position in the menu.
- macOS 10.0+
The title of the new item. If an item with the same title already exists in the menu, the existing item is removed and the new one is added
The zero-based index at which to insert the item. Specifying
0inserts the item at the top of the menu.
The value in
index must represent a valid position in the array. The menu item at
index and all those that follow it are shifted down one slot to make room for the new menu item.
This method assigns the pop-up button’s default action and target to the new menu item. Use the menu item’s setAction: and setTarget: methods to assign a new action and target.
Because this method searches for duplicate items, it should not be used if you are adding an item to an already populated menu with more than a few hundred items. In a situation like this, add items directly to the button's menu instead.