利用TpaintBox的Canvas绘从串口收取的实时心电波形及备景程序，绘制网格程序已封成一个Function，可以直接用到别的地方，如绘窗口背景网格只要改几个参数就可以了-Use of the Canvas painting TpaintBox collected from serial real-time ECG waveform and the preparation of King procedure, mapping grid procedure has been closed as a Function, can be directly used in other places, such as painted window background grid as long as several parameters can be changed a