public static extern int NET_DVR_FindFile_V30(int lUserID, ref NET_DVR_FILECOND pFindCond);
public static extern int NET_DVR_FindFile_V30(int lUserID, NET_DVR_FILECOND pFindCond);
public static extern int NET_DVR_FindFile_V30(int lUserID, ref NET_DVR_FILECOND pFindCond);
public static extern int NET_DVR_FindFile_V30(int lUserID, NET_DVR_FILECOND pFindCond);