pub type readstat_update_handler = Option<unsafe extern "C" fn(file_size: c_long, progress_handler: readstat_progress_handler, user_ctx: *mut c_void, io_ctx: *mut c_void) -> readstat_error_t>;Aliased Type§
pub enum readstat_update_handler {
None,
Some(unsafe extern "C" fn(i64, Option<unsafe extern "C" fn(f64, *mut c_void) -> i32>, *mut c_void, *mut c_void) -> u32),
}