---
title: CGRefreshRate
framework: coregraphics
role: symbol
role_heading: Type Alias
path: coregraphics/cgrefreshrate
---

# CGRefreshRate

A display’s refresh rate in frames per second.

## Declaration

```swift
typealias CGRefreshRate = Double
```

## Discussion

Discussion When requesting a new display mode, you can specify a desired refresh rate as a hint to Quartz. For example, see the function CGDisplayBestModeForParametersAndRefreshRate(_:_:_:_:_:_:). Special Considerations Most applications should never need this data type. Starting in OS X v10.6, the CGDisplayBestMode functions are deprecated and the new display mode API does not use this type.

## See Also

### Data Types

- [CGButtonCount](coregraphics/cgbuttoncount.md)
- [CGCharCode](coregraphics/cgcharcode.md)
- [CGDirectDisplayID](coregraphics/cgdirectdisplayid.md)
- [CGDisplayBlendFraction](coregraphics/cgdisplayblendfraction.md)
- [CGDisplayConfigRef](coregraphics/cgdisplayconfigref.md)
- [CGDisplayCount](coregraphics/cgdisplaycount.md)
- [CGDisplayErr](coregraphics/cgdisplayerr.md)
- [CGDisplayFadeInterval](coregraphics/cgdisplayfadeinterval.md)
- [CGDisplayFadeReservationToken](coregraphics/cgdisplayfadereservationtoken.md)
- [CGDisplayMode](coregraphics/cgdisplaymode.md)
- [CGDisplayReconfigurationCallBack](coregraphics/cgdisplayreconfigurationcallback.md)
- [CGDisplayReservationInterval](coregraphics/cgdisplayreservationinterval.md)
- [CGDisplayStream](coregraphics/cgdisplaystream.md)
- [CGDisplayStreamFrameAvailableHandler](coregraphics/cgdisplaystreamframeavailablehandler.md)
- [CGDisplayStreamUpdate](coregraphics/cgdisplaystreamupdate.md)