gboolean iter_nth_child ( GtkTreeModel* tree_model, GtkTreeIter* iter, GtkTreeIter* parent, gint n )
iter to be the child of
parent, using the given index.
The first index is 0. If
n is too big, or
parent has no children,
iter is set to an invalid iterator and
FALSE is returned.
will remain a valid node after this function has been called. As a
special case, if
NULL, then the
n-th root node
GtkTreeIter-struct to set to the nth child.
The argument will be set by the function. The data is owned by the function.
GtkTreeIter-struct to get the child from, or
The argument can be
The data is owned by the caller of the function.
The index of the desired child.