在窗口指定区域动态绘制波形类以及示例 初始化工作一次完成后，后续只需调用唯一接口 int AddNewValue(WORD wVal)即可。波形振幅、频率；曲线颜色、粗细、背景色都可以控制改变。-Dynamic rendering the designated area in the window class and the sample waveform　initialization work that is completed, simply call up the only interface to int AddNewValue (WORD wVal) can. Waveform amplitude, frequency　curve color, thickness, background color change can be controlled.