drawing_clear(control_flow_data->drawing);
processlist_clear(control_flow_data->process_list);
-#if 0 /* normal redraw, without removing PIDs */
// Clear the image
gdk_draw_rectangle (drawing->pixmap,
widget->style->black_gc,
0,0,
drawing->width,
drawing->height);
-#endif //0
return FALSE;
}