LookupAccountSidW und Datenbereich zu klein

[Remko]

Isn't is meant to work like this (behaviour by design)?

I'm used to doing this (example with LookupAccountName) but behaviour for LookupAccountSid is the same::

Delphi-Quellcode:

  dwSizeSid := 0;
  dwSizeDomain := 0;
  bRes := LookupAccountName(nil, 'Administrator', nil, dwSizeSid, nil, dwSizeDomain, SidType);

  if (not bRes) and (GetLastError = ERROR_INSUFFICIENT_BUFFER) then
  begin
    // Reserve memory
    AdminSid := AllocMem(dwSizeSid);
    SetLength(Domain, dwSizeDomain);

    // Lookup Sid from Accountname
    // Assuming that the Admin account has not been renamed!
    bRes := LookUpAccountName(nil, 'Administrator', AdminSid, dwSizeSid, PChar(Domain), dwSizeDomain, SidType);