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# hasVerticalScroller

A Boolean value indicating whether the combo box has a vertical scroller.

```
var hasVerticalScroller: Bool { get set }
```

## Discussion

When the value of this property is <doc://com.apple.documentation/documentation/Swift/true>, the combo box displays a vertical scroller even when the pop-up list contains few enough items that a scroller is not needed. The default value of this property is <doc://com.apple.documentation/documentation/Swift/true>.

If the value of this property is <doc://com.apple.documentation/documentation/Swift/false> and the combo box has more list items (either in its internal item list or from its data source) than are allowed by [`numberOfVisibleItems`](/documentation/AppKit/NSComboBox/numberOfVisibleItems), only a subset of items are displayed. The `NSComboBox` class’ `scroll...` methods can be used to position this subset within the pop-up list.

## See Also

[`numberOfItems`](/documentation/AppKit/NSComboBox/numberOfItems)

The total number of items in the pop-up list.

[`scrollItemAtIndexToTop(_:)`](/documentation/AppKit/NSComboBox/scrollItemAtIndexToTop(_:))

Scrolls the receiver’s pop-up list vertically so that the item at the specified index is as close to the top as possible.

[`scrollItemAtIndexToVisible(_:)`](/documentation/AppKit/NSComboBox/scrollItemAtIndexToVisible(_:))

Scrolls the receiver’s pop-up list vertically so that the item at the specified index is visible.


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