Function CGGetDisplayTransferByTable 

pub unsafe extern "C-unwind" fn CGGetDisplayTransferByTable(
    display: CGDirectDisplayID,
    capacity: u32,
    red_table: *mut CGGammaValue,
    green_table: *mut CGGammaValue,
    blue_table: *mut CGGammaValue,
    sample_count: *mut u32,
) -> CGError

Available on crate features CGDirectDisplay and CGError only.

Safety

• red_table must be a valid pointer or null.
• green_table must be a valid pointer or null.
• blue_table must be a valid pointer or null.
• sample_count must be a valid pointer or null.