+ /**
+ * Set the content to be shown in a given genlist item's tooltips
+ *
+ * @param item The genlist item.
+ * @param func The function returning the tooltip contents.
+ * @param data What to provide to @a func as callback data/context.
+ * @param del_cb Called when data is not needed anymore, either when
+ * another callback replaces @func, the tooltip is unset with
+ * elm_genlist_item_tooltip_unset() or the owner @p item
+ * dies. This callback receives as its first parameter the
+ * given @p data, being @c event_info the item handle.
+ *
+ * This call will setup the tooltip's contents to @p item
+ * (analogous to elm_object_tooltip_content_cb_set(), but being
+ * item tooltips with higher precedence than object tooltips). It
+ * can have only one tooltip at a time, so any previous tooltip
+ * content will get removed. @p func (with @p data) will be called
+ * every time Elementary needs to show the tooltip and it should
+ * return a valid Evas object, which will be fully managed by the
+ * tooltip system, getting deleted when the tooltip is gone.
+ *
+ * In order to set just a text as a tooltip, look at
+ * elm_genlist_item_tooltip_text_set().
+ *
+ * @ingroup Genlist
+ */