---
title: alphaInfoMask
framework: coregraphics
role: symbol
role_heading: Type Property
path: coregraphics/cgbitmapinfo/alphainfomask
---

# alphaInfoMask

The alpha information mask. Use this to extract alpha information that specifies whether a bitmap contains an alpha channel and how the alpha channel is generated.

## Declaration

```swift
static var alphaInfoMask: CGBitmapInfo { get }
```

## See Also

### Constants

- [floatComponents](coregraphics/cgbitmapinfo/floatcomponents.md)
- [byteOrderMask](coregraphics/cgbitmapinfo/byteordermask.md)
- [byteOrderDefault](coregraphics/cgbitmapinfo/byteorderdefault.md)
- [byteOrder16Little](coregraphics/cgbitmapinfo/byteorder16little.md)
- [byteOrder32Little](coregraphics/cgbitmapinfo/byteorder32little.md)
- [byteOrder16Big](coregraphics/cgbitmapinfo/byteorder16big.md)
- [byteOrder32Big](coregraphics/cgbitmapinfo/byteorder32big.md)
- [floatInfoMask](coregraphics/cgbitmapinfo/floatinfomask.md)