Creates a list of path of all selected rows. Additionally, if you are planning on modifying the model after calling this function, you may want to convert the returned list into a list of GtkTreeRowReference<!-- -->s. To do this, you can use gtk_tree_row_reference_new(). To free the return value, use: |[ g_list_foreach (list, (GFunc) gtk_tree_path_free, NULL); g_list_free (list); ]|