gtk_tree_view_insert_column_with_attributes( GTK_TREE_VIEW( lookup_widget( wnd, "t_materialist" ) ), -1, "", renderer, "text", 0, NULL );
// list store
gtk_tree_view_insert_column_with_attributes( GTK_TREE_VIEW( lookup_widget( wnd, "t_materialist" ) ), -1, "", renderer, "text", 0, NULL );
// list store