---
title: CGDisplayFadeReservationToken
framework: coregraphics
role: symbol
role_heading: Type Alias
path: coregraphics/cgdisplayfadereservationtoken
---

# CGDisplayFadeReservationToken

A token issued by Quartz when reserving one or more displays for a fade operation during a specified interval.

## Declaration

```swift
typealias CGDisplayFadeReservationToken = UInt32
```

## Discussion

Discussion Quartz lets you reserve the display hardware to perform a fade operation. Fade reservations are valid for up to 15 seconds. Only one token is needed for both fade-out and fade-in. You should release a fade reservation immediately when you no longer need it. If the reservation expires, releasing it is safe but not necessary.

## 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)
- [CGDisplayMode](coregraphics/cgdisplaymode.md)
- [CGDisplayReconfigurationCallBack](coregraphics/cgdisplayreconfigurationcallback.md)
- [CGDisplayReservationInterval](coregraphics/cgdisplayreservationinterval.md)
- [CGDisplayStream](coregraphics/cgdisplaystream.md)
- [CGDisplayStreamFrameAvailableHandler](coregraphics/cgdisplaystreamframeavailablehandler.md)
- [CGDisplayStreamUpdate](coregraphics/cgdisplaystreamupdate.md)
- [CGEvent](coregraphics/cgevent.md)