RtlStringCchLengthW

NTSTATUS __stdcall RtlStringCchLengthW(STRSAFE_PCNZWCH psz, SIZE_T cchMax, SIZE_T *pcchLength){
  SIZE_T i; 
  NTSTATUS result; 
  if( psz && cchMax <= 0x7FFFFFFF )
  {
    for( i = cchMax; i; --i )
    {
      if( !*psz )
        break;
      ++psz;
    }
    result = i == 0 ? 0xC000000D : 0;
    if( pcchLength )
    {
      if( i )
        *pcchLength = cchMax - i;
      else
        *pcchLength = 0i64;
    }
  }
  else
  {
    result = -1073741811;
  }
  if( result < 0 )
  {
    if( pcchLength )
      *pcchLength = 0i64;
  }
  return result;
}

Referenced by: