kCGWindowAlpha
Declaration
let kCGWindowAlpha: CFStringDiscussion
The value for this key is a CFNumber type (encoded as CFNumberType.floatType) that contains the window’s alpha fade level. This number is in the range 0.0 to 1.0, where 0.0 is fully transparent and 1.0 is fully opaque.
See Also
Constants
colorSpaceconversionBlackPointCompensationkCGDisplayBitsPerPixelkCGDisplayBitsPerSamplekCGDisplayBlendNormalkCGDisplayBlendSolidColorkCGDisplayBytesPerRowkCGDisplayFadeReservationInvalidTokenkCGDisplayHeightkCGDisplayIOFlagskCGDisplayModekCGDisplayModeIsInterlacedkCGDisplayModeIsSafeForHardwarekCGDisplayModeIsStretchedkCGDisplayModeIsTelevisionOutput