Hello,
while porting the Elm GenList to C++ I found this code in test_genlist.c:
static void
gl4_exp(void *data, Evas_Object *obj, void *event_info)
{
Elm_Genlist_Item *it = event_info;
Evas_Object *gl = elm_genlist_item_genlist_get(it);
int val = (int)elm_genlist_item_data_get(it);
val *= 10;
elm_genlist_item_append(gl, &itc4,
(void *)(val + 1)/* item data */, it/* parent */,
ELM_GENLIST_ITEM_NONE, gl4_sel/* func */,
NULL/* func data */);
elm_genlist_item_append(gl, &itc4,
(void *)(val + 2)/* item data */, it/* parent */,
ELM_GENLIST_ITEM_NONE, gl4_sel/* func */,
NULL/* func data */);
elm_genlist_item_append(gl, &itc4,
(void *)(val + 3)/* item data */, it/* parent */,
ELM_GENLIST_ITEM_SUBITEMS, gl4_sel/* func */,
NULL/* func data */);
}
static void
gl4_con(void *data, Evas_Object *obj, void *event_info)
{
Elm_Genlist_Item *it = event_info;
elm_genlist_item_subitems_clear(it);
}
static void
gl4_exp_req(void *data, Evas_Object *obj, void *event_info)
{
Elm_Genlist_Item *it = event_info;
elm_genlist_item_expanded_set(it, 1);
}
static void
gl4_con_req(void *data, Evas_Object *obj, void *event_info)
{
Elm_Genlist_Item *it = event_info;
elm_genlist_item_expanded_set(it, 0);
}
I'm really wondering about the usage of void *event_info. Could you explain me
why
it's used here as data pointer? In my eyes Elm_Genlist_Item isn't really an
event.
I would have used void *data for this reason. Could you explain this?
regards
Andreas
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