Function lf_add_scroll_callback

leif.c:2266–2268

}

void lf_add_scroll_callback(void* cb) {
  state.input.scroll_cbs[state.input.scroll_cb_count++] = (SCROLL_CALLBACK_t)cb;
}

void lf_add_cursor_pos_callback(void* cb) {
  state.input.cursor_pos_cbs[state.input.cursor_pos_cb_count++] = (CURSOR_CALLBACK_t)cb;