---
title: "numberOfPreviewItems(in:)"
framework: quicklookui
role: symbol
role_heading: Instance Method
path: "quicklookui/qlpreviewpaneldatasource/numberofpreviewitems(in:)"
---

# numberOfPreviewItems(in:)

Returns the number of items that the preview panel should preview.

## Declaration

```swift
func numberOfPreviewItems(in panel: QLPreviewPanel!) -> Int
```

## Parameters

- `panel`: The preview panel.

## Return Value

Return Value The number of items the preview panel should display.

## See Also

### Required Methods

- [previewPanel(_:previewItemAt:)](quicklookui/qlpreviewpaneldatasource/previewpanel(_:previewitemat:).md)