public Int32 HNC_FprogGetProgPathByIdx(Int32 pindex, ref String progName)
{
Int32 ret = -1;
IntPtr ptr = Marshal.AllocHGlobal(HNCFPROGMAN.PROG_PATH_SIZE);
ret = HncApi.HNC_FprogGetProgPathByIdx(pindex, ptr, _ClientNo);
progName = Marshal.PtrToStringAnsi(ptr);
Marshal.FreeHGlobal(ptr);
return(ret);
}