Drawing_t *drawing = (Drawing_t*)user_data;
TimeWindow time_window = lttvwindow_get_time_window(drawing->control_flow_data->tab);
gchar text[255];
Drawing_t *drawing = (Drawing_t*)user_data;
TimeWindow time_window = lttvwindow_get_time_window(drawing->control_flow_data->tab);
gchar text[255];