Type Definition libmtp_sys::bindings::LIBMTP_progressfunc_t

type LIBMTP_progressfunc_t = Option<unsafe extern "C" fn(sent: u64, total: u64, data: *const c_void) -> c_int>;

The callback type definition. Notice that a progress percentage ratio is easy to calculate by dividing sent by total. @param sent the number of bytes sent so far @param total the total number of bytes to send @param data a user-defined dereferencable pointer @return if anything else than 0 is returned, the current transfer will be interrupted / cancelled.