Sets @iter to a valid iterator pointing to @path_string, if it exists. Otherwise, @iter is left invalid and %FALSE is returned.
an uninitialized #GtkTreeIter-struct
a string representation of a #GtkTreePath-struct
Return: %TRUE, if @iter was set
See Implementation
Sets @iter to a valid iterator pointing to @path_string, if it exists. Otherwise, @iter is left invalid and %FALSE is returned.