Reads a child item out of a container GVariant instance. This
includes variants, maybes, arrays, tuples and dictionary
entries. It is an error to call this function on any other type of
GVariant.
It is an error if index_ is greater than the number of child items
in the container. See g_variant_n_children().
This function is O(1).
Since 2.24
Reads a child item out of a container GVariant instance. This includes variants, maybes, arrays, tuples and dictionary entries. It is an error to call this function on any other type of GVariant. It is an error if index_ is greater than the number of child items in the container. See g_variant_n_children(). This function is O(1). Since 2.24