path = gtk_tree_path_new_first();
gtk_tree_model_get_iter (gtk_tree_view_get_model(GTK_TREE_VIEW(process_list->process_list_widget)), &iter, path);
gtk_list_store_append(process_list->list_store, &iter);
+ gtk_tree_path_free(path);
process_list->cell_height = 0; // not ready to get size yet.