void CVICALLBACK Event_Char_Func(int portNo,int eventMask,void * callbackData) {	char strBuf[20]={0};	float dataBuf[200]={0.0} ;	float InputVoltageMv;	int InjectedConvData= 0;	unsigned int strLen=GetInQLen(7); //获取串口接收的数据缓冲区长度	ComRd(7, readBuf, strLen); //读取指定长度数据	PlotStripChart (panelHandle, PANEL_VOLTAGE_GRAPH, readBuf, strLen, 0, 0, VAL_FLOAT); //把数据在曲线图上从左至右实时更新
}