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# comboBox(_:objectValueForItemAt:)

Returns the object that corresponds to the item at the specified index in the combo box.

```
@MainActor optional func comboBox(_ comboBox: NSComboBox, objectValueForItemAt index: Int) -> Any?
```

## Parameters

`comboBox`

The combo box.

`index`

The index of the item to return.

## Return Value

The object corresponding to the specified index number.

## Discussion

An `NSComboBox` object uses this method to populate the items displayed in its pop-up list.

> Important:
> While this method is marked as `@optional` in the protocol, you must implement this method if you are not providing the data for the combo box using Cocoa bindings.

## See Also

[`NSComboBoxDataSource`](/documentation/AppKit/NSComboBoxDataSource)


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