Function xcb::ffi::randr::xcb_randr_set_crtc_gamma

pub unsafe extern fn xcb_randr_set_crtc_gamma(
    c: *mut xcb_connection_t, 
    crtc: xcb_randr_crtc_t, 
    size: u16, 
    red: *const u16, 
    green: *const u16, 
    blue: *const u16
) -> xcb_void_cookie_t