guicontrolflow_get_time_window(control_flow_data);
TimeWindow *new_time_window = ((TimeWindow*)call_data);
guicontrolflow_get_time_window(control_flow_data);
TimeWindow *new_time_window = ((TimeWindow*)call_data);
/* Two cases : zoom in/out or scrolling */
/* In order to make sure we can reuse the old drawing, the scale must
/* Two cases : zoom in/out or scrolling */
/* In order to make sure we can reuse the old drawing, the scale must