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docs(event): tell to not adjust widgets in draw events

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fixes #3009
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Gabor Kiss-Vamosi
2022-01-19 12:34:13 +01:00
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parent d33db6bb59
commit 933d67fe5b
1 changed files with 3 additions and 0 deletions
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docs/overview/event.md
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@@ -101,6 +101,9 @@ The following event codes exist:
- `LV_EVENT_DRAW_PART_BEGIN` Starting to draw a part. The event parameter is `lv_obj_draw_dsc_t *`. Learn more [here](/overview/drawing).
- `LV_EVENT_DRAW_PART_END` Finishing to draw a part. The event parameter is `lv_obj_draw_dsc_t *`. Learn more [here](/overview/drawing).
In `LV_EVENT_DRAW_...` events it's not allowed to adjust the widgets' properties. E.g. you can not call `lv_obj_set_width()`.
In other words only `get` functions can be called.
### Other events
- `LV_EVENT_DELETE` Object is being deleted
- `LV_EVENT_CHILD_CHANGED` Child was removed/added