ignoresAlpha
A Boolean value that indicates whether the app supports alpha.
Declaration
@MainActor class var ignoresAlpha: Bool { get set }Return Value
Discussion
The system consults this global value when the app imports alpha (for instance, through color dragging). By default this property is false; meaning the system supports the alpha component for colors globally. To ignore alpha for an app, invoke the setIgnoresAlpha method with a parameter of true. This value also determines whether the color panel has an opacity slider.
This method provides a global approach for removing alpha, which might not always be appropriate. Apps that need to disable alpha can use more fine-grained APIs for individual controls, such as showsAlpha and supportsAlpha.
In macOS 13 and earlier, the default value is true. This property is deprecated as of macOS 14.