---
title: "onMenuItemHighlight(perform:)"
framework: swiftui
role: symbol
role_heading: Instance Method
path: "swiftui/view/onmenuitemhighlight(perform:)"
---

# onMenuItemHighlight(perform:)

Adds an action to perform when the highlight state of a menu item changes.

## Declaration

```swift
nonisolated func onMenuItemHighlight(perform action: @escaping (Bool) -> Void) -> some View

```

## Parameters

- `action`: The action to perform whenever the highlight state of the menu item changes. If the menu item is highlighted, the action closure passes true as a parameter; otherwise, false.

## Return Value

Return Value A view that triggers action when the highlight state changes.

## Discussion

Discussion A state change is triggered as a menu item goes from idle to highlighted and vice versa. Highlighting in this context includes hovering, touching, keyboard navigating, and focusing. Use this modifier on views inside a menu to observe when the user highlights an item. For example, a photo browser can dim a thumbnail while the user hovers over the Delete action: @State private var previewingDelete = false let photo: Photo

PhotoThumbnail(photo: photo)     .opacity(previewingDelete ? 0.4 : 1)     .contextMenu {         Button("Copy") { ... }         Button("Delete", role: .destructive) {             ...         }         .onMenuItemHighlight { highlighted in             previewingDelete = highlighted         }     } note: This modifier has no effect when applied outside of a menu context.