Function CGConfigureDisplayStereoOperation 

pub unsafe extern "C-unwind" fn CGConfigureDisplayStereoOperation(
    config: CGDisplayConfigRef,
    display: CGDirectDisplayID,
    stereo: bool,
    force_blue_line: bool,
) -> CGError

Available on crate features CGDirectDisplay and CGDisplayConfiguration and CGError and libc only.

Safety

config must be a valid pointer or null.