Function CGConfigureDisplayFadeEffect 

pub unsafe extern "C-unwind" fn CGConfigureDisplayFadeEffect(
    config: CGDisplayConfigRef,
    fade_out_seconds: CGDisplayFadeInterval,
    fade_in_seconds: CGDisplayFadeInterval,
    fade_red: c_float,
    fade_green: c_float,
    fade_blue: c_float,
) -> CGError

Available on crate features CGDisplayConfiguration and CGDisplayFade and CGError only.

Safety

config must be a valid pointer or null.