---
title: "visualizeConstraints(_:)"
framework: appkit
role: symbol
role_heading: Instance Method
path: "appkit/nswindow/visualizeconstraints(_:)"
---

# visualizeConstraints(_:)

Displays a visual representation of the supplied constraints in the window.

## Declaration

```swift
func visualizeConstraints(_ constraints: [NSLayoutConstraint]?)
```

## Parameters

- `constraints`: The constraints to visualize. All constraints must be held by views in the window.

## Discussion

Discussion The constraints to visualize are typically discovered by identifying a view whose layout is unexpected and then calling constraintsAffectingLayout(for:) on that view. This method should only be used for debugging constraint-based layout. No application should ship with calls to this method as part of its operation.