---
title: "invalidateIntrinsicContentSize(for:)"
framework: appkit
role: symbol
role_heading: Instance Method
path: "appkit/nscontrol/invalidateintrinsiccontentsize(for:)"
---

# invalidateIntrinsicContentSize(for:)

Notifies the control that the intrinsic content size for its cell is no longer valid.

## Declaration

```swift
func invalidateIntrinsicContentSize(for cell: NSCell)
```

## Parameters

- `cell`: The cell whose intrinsic content size has changed.

## Discussion

Discussion Controls determine their intrinsic content size based on the cell size for a given bounds returned by their cell. When the content of the cell changes in a way that would change the return value of cellSize(forBounds:), the cell needs to call this method to notify its control that its intrinsic size is no longer valid.