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Update obj.rst
Tell user to set ext draw width as needed.
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@ -194,12 +194,15 @@ This behavior can be overwritten with
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children to be drawn out of the parent. In addition to this, you must register
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the following event callback (this was not required in previous versions).
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Note: ``ext_width`` should be the maximum absolute width the children will be
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drawn within.
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.. code-block:: c
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static void ext_draw_size_event_cb(lv_event_t * e)
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{
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lv_coord_t * cur_size = lv_event_get_param(e);
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*cur_size = LV_MAX(*cur_size, LV_HOR_RES);
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*cur_size = LV_MAX(*cur_size, ext_width);
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}
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Create and delete Widgets
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