---
title: trackRect
framework: appkit
role: symbol
role_heading: Instance Property
path: appkit/nsslidercell/trackrect
---

# trackRect

The rectangle within which the cell tracks the pointer while the mouse button is down.

## Declaration

```swift
var trackRect: NSRect { get }
```

## Discussion

Discussion The tracking rectangle includes the slider bar, but not the bezel.

## See Also

### Managing Cell Behavior

- [altIncrementValue](appkit/nsslidercell/altincrementvalue.md)
- [prefersTrackingUntilMouseUp](appkit/nsslidercell/preferstrackinguntilmouseup.md)