# lv_indev_scroll.h (/api/private/indev/lv_indev_scroll_h)



<ApiSummary functions="4" />

Functions [#functions]

<ApiTabs items="[&#x22;Getters (1)&#x22;,&#x22;Other (3)&#x22;]">
  <ApiTab value="Getters (1)">
    <ApiMember kind="function" name="lv_indev_scroll_get_snap_dist" file="private/indev/lv_indev_scroll.h" line="55" url="https://github.com/lvgl/lvgl/tree/e1a0ad863f29742359bc680d6a7d973448ec2285/src/indev/lv_indev_scroll.h#L55">
      lv_indev_scroll_get_snap_dist [#lv_indev_scroll_get_snap_dist]

      Get the distance of the nearest snap point

      ```c title=" " lineNumbers=1
      void lv_indev_scroll_get_snap_dist(lv_obj_t *obj, lv_point_t *p)
      ```

      <span className="sr-only">
        Parameters
      </span>

      | Name  | Type                                                 | Description                                     |
      | ----- | ---------------------------------------------------- | ----------------------------------------------- |
      | `obj` | <ApiLink name="lv_obj_t" display="lv_obj_t *" />     | the object on which snap points should be found |
      | `p`   | <ApiLink name="lv_point_t" display="lv_point_t *" /> | save the distance of the found snap point there |
    </ApiMember>
  </ApiTab>

  <ApiTab value="Other (3)">
    <ApiMember kind="function" name="lv_indev_scroll_handler" file="private/indev/lv_indev_scroll.h" line="34" url="https://github.com/lvgl/lvgl/tree/e1a0ad863f29742359bc680d6a7d973448ec2285/src/indev/lv_indev_scroll.h#L34">
      lv_indev_scroll_handler [#lv_indev_scroll_handler]

      Handle scrolling. Called by LVGL during input device processing

      ```c title=" " lineNumbers=1
      void lv_indev_scroll_handler(lv_indev_t *indev)
      ```

      <span className="sr-only">
        Parameters
      </span>

      | Name    | Type                                                 | Description                |
      | ------- | ---------------------------------------------------- | -------------------------- |
      | `indev` | <ApiLink name="lv_indev_t" display="lv_indev_t *" /> | pointer to an input device |
    </ApiMember>

    <ApiMember kind="function" name="lv_indev_scroll_throw_handler" file="private/indev/lv_indev_scroll.h" line="40" url="https://github.com/lvgl/lvgl/tree/e1a0ad863f29742359bc680d6a7d973448ec2285/src/indev/lv_indev_scroll.h#L40">
      lv_indev_scroll_throw_handler [#lv_indev_scroll_throw_handler]

      Handle throwing after scrolling. Called by LVGL during input device processing

      ```c title=" " lineNumbers=1
      void lv_indev_scroll_throw_handler(lv_indev_t *indev)
      ```

      <span className="sr-only">
        Parameters
      </span>

      | Name    | Type                                                 | Description                |
      | ------- | ---------------------------------------------------- | -------------------------- |
      | `indev` | <ApiLink name="lv_indev_t" display="lv_indev_t *" /> | pointer to an input device |
    </ApiMember>

    <ApiMember kind="function" name="lv_indev_scroll_throw_predict" file="private/indev/lv_indev_scroll.h" line="48" url="https://github.com/lvgl/lvgl/tree/e1a0ad863f29742359bc680d6a7d973448ec2285/src/indev/lv_indev_scroll.h#L48">
      lv_indev_scroll_throw_predict [#lv_indev_scroll_throw_predict]

      Predict where would a scroll throw end

      ```c title=" " lineNumbers=1
      int32_t lv_indev_scroll_throw_predict(lv_indev_t *indev, lv_dir_t dir)
      ```

      <span className="sr-only">
        Parameters
      </span>

      | Name    | Type                                                 | Description                  |
      | ------- | ---------------------------------------------------- | ---------------------------- |
      | `indev` | <ApiLink name="lv_indev_t" display="lv_indev_t *" /> | pointer to an input device   |
      | `dir`   | <ApiLink name="lv_dir_t" />                          | `LV_DIR_VER` or `LV_DIR_HOR` |

      **Returns:** `int32_t` — the difference compared to the current position when the throw would be finished
    </ApiMember>
  </ApiTab>
</ApiTabs>

Dependencies [#dependencies]

<FileIncludes includes="[&#x22;lvgl_public.h&#x22;]" includedBy="[&#x22;lv_indev_private.h&#x22;, &#x22;lvgl_private.h&#x22;]" />