Type Definition makepad_glx_sys::PFNGLXQUERYCHANNELDELTASSGIXPROC

type PFNGLXQUERYCHANNELDELTASSGIXPROC = Option<unsafe extern "C" fn(display: *mut Display, screen: c_int, channel: c_int, x: *mut c_int, y: *mut c_int, w: *mut c_int, h: *mut c_int) -> c_int>;