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# Required Window List Keys

The keys that are guaranteed to be available in a window’s information dictionary.

## Topics

### Constants

[`kCGWindowNumber`](/documentation/CoreGraphics/kCGWindowNumber)

[`kCGWindowStoreType`](/documentation/CoreGraphics/kCGWindowStoreType)

[`kCGWindowLayer`](/documentation/CoreGraphics/kCGWindowLayer)

[`kCGWindowBounds`](/documentation/CoreGraphics/kCGWindowBounds)

[`kCGWindowSharingState`](/documentation/CoreGraphics/kCGWindowSharingState)

[`kCGWindowAlpha`](/documentation/CoreGraphics/kCGWindowAlpha)

[`kCGWindowOwnerPID`](/documentation/CoreGraphics/kCGWindowOwnerPID)

[`kCGWindowMemoryUsage`](/documentation/CoreGraphics/kCGWindowMemoryUsage)


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