gtk_tree_view_column_pack_start(view_column, renderer, TRUE);
gtk_tree_view_column_set_attributes (view_column, renderer,
"text", MODEL_COL_NAME, NULL);
gtk_tree_view_column_pack_start(view_column, renderer, TRUE);
gtk_tree_view_column_set_attributes (view_column, renderer,
"text", MODEL_COL_NAME, NULL);