diff options
Diffstat (limited to 'src/core/lv_obj.c')
| -rw-r--r-- | src/core/lv_obj.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/src/core/lv_obj.c b/src/core/lv_obj.c index ca2048e84..b5fd51f8d 100644 --- a/src/core/lv_obj.c +++ b/src/core/lv_obj.c @@ -50,6 +50,7 @@ static void draw_scrollbar(lv_obj_t * obj, lv_layer_t * layer); static lv_result_t scrollbar_init_draw_dsc(lv_obj_t * obj, lv_draw_rect_dsc_t * dsc); static bool obj_valid_child(const lv_obj_t * parent, const lv_obj_t * obj_to_find); static void update_obj_state(lv_obj_t * obj, lv_state_t new_state); +static void null_on_delete_cb(lv_event_t * e); #if LV_USE_OBJ_PROPERTY static lv_result_t lv_obj_set_any(lv_obj_t *, lv_prop_id_t, const lv_property_t *); @@ -426,6 +427,11 @@ bool lv_obj_is_valid(const lv_obj_t * obj) return false; } +void lv_obj_null_on_delete(lv_obj_t ** obj_ptr) +{ + lv_obj_add_event_cb(*obj_ptr, null_on_delete_cb, LV_EVENT_DELETE, obj_ptr); +} + #if LV_USE_OBJ_ID void lv_obj_set_id(lv_obj_t * obj, void * id) { @@ -988,6 +994,12 @@ static bool obj_valid_child(const lv_obj_t * parent, const lv_obj_t * obj_to_fin return false; } +static void null_on_delete_cb(lv_event_t * e) +{ + lv_obj_t ** obj_ptr = lv_event_get_user_data(e); + *obj_ptr = NULL; +} + #if LV_USE_OBJ_PROPERTY static lv_result_t lv_obj_set_any(lv_obj_t * obj, lv_prop_id_t id, const lv_property_t * prop) { |