//回调函数,用来获取Netro数据 public void GetMessageNetro(Int32 lCommand, ref SdkClass.NET_DVR_ALARMINFO pAlarmer, IntPtr pAlarmInfo, Int32 dwBufLen, IntPtr pUser) { //Netro数据上传 if (SdkClass.COMM_ITS_PARK_VEHICLE == lCommand) { SdkClass.NET_ITS_PARK_VEHICLE tmpPark = new SdkClass.NET_ITS_PARK_VEHICLE(); tmpPark = (SdkClass.NET_ITS_PARK_VEHICLE)Marshal.PtrToStructure(pAlarmInfo, typeof(SdkClass.NET_ITS_PARK_VEHICLE)); int picno = tmpPark.byPicNo; } }