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docs: update LV_OBJ_FLAG_OVERFLOW_VISIBLE usage (#7101)

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Co-authored-by: Gabor Kiss-Vamosi <kisvegabor@gmail.com>
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Ryan Stachura 2024-11-27 05:14:42 -05:00 committed by GitHub
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13
docs/details/base-widget/obj.rst
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@ -191,7 +191,18 @@ outside will not be visible.
This behavior can be overwritten with
:cpp:expr:`lv_obj_add_flag(widget, LV_OBJ_FLAG_OVERFLOW_VISIBLE)` which allow the
children to be drawn out of the parent.
children to be drawn out of the parent. In addition to this, you must register
the following event callback (this was not required in previous versions).
Note: ``ext_width`` should be the maximum absolute width the children will be
drawn within.
.. code-block:: c
static void ext_draw_size_event_cb(lv_event_t * e)
{
lv_event_set_ext_draw_size(e, 30); /*Set 30px extra draw area around the widget*/
}
Create and delete Widgets
-------------------------