---
title: CGDisplayFadeInterval
framework: coregraphics
role: symbol
role_heading: Type Alias
path: coregraphics/cgdisplayfadeinterval
---

# CGDisplayFadeInterval

The duration in seconds of a fade operation or a fade hardware reservation.

## Declaration

```swift
typealias CGDisplayFadeInterval = Float
```

## Discussion

Discussion Quartz uses this data type to specify the duration of both fade-out and fade-in operations. Values may range from 0 to kCGMaxDisplayReservationInterval seconds. A 0 value means fade immediately—see CGDisplayFade(_:_:_:_:_:_:_:_:).

## 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)
- [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)
- [CGEvent](coregraphics/cgevent.md)