Title: determine the user's logon domain?
function GetDomainName: AnsiString;
type
WKSTA_INFO_100 = record
wki100_platform_id: Integer;
wki100_computername: PWideChar;
wki100_langroup: PWideChar;
wki100_ver_major: Integer;
wki100_ver_minor: Integer;
end;
WKSTA_USER_INFO_1 = record
wkui1_username: PChar;
wkui1_logon_domain: PChar;
wkui1_logon_server: PChar;
wkui1_oth_domains: PChar;
end;
type
//Win9X ANSI prototypes from RADMIN32.DLL and RLOCAL32.DLL
TWin95_NetUserGetInfo = function(ServerName, UserName: PChar; Level: DWORD; var
BfrPtr: Pointer): Integer;
stdcall;
TWin95_NetApiBufferFree = function(BufPtr: Pointer): Integer;
stdcall;
TWin95_NetWkstaUserGetInfo = function(Reserved: PChar; Level: Integer; var
BufPtr: Pointer): Integer;
stdcall;
//WinNT UNICODE equivalents from NETAPI32.DLL
TWinNT_NetWkstaGetInfo = function(ServerName: PWideChar; level: Integer; var
BufPtr: Pointer): Integer;
stdcall;
TWinNT_NetApiBufferFree = function(BufPtr: Pointer): Integer;
stdcall;
function IsWinNT: Boolean;
var
VersionInfo: TOSVersionInfo;
begin
VersionInfo.dwOSVersionInfoSize := SizeOf(TOSVersionInfo);
Result := GetVersionEx(VersionInfo);
if Result then
Result := VersionInfo.dwPlatformID = VER_PLATFORM_WIN32_NT;
end;
var
Win95_NetUserGetInfo: TWin95_NetUserGetInfo;
Win95_NetWkstaUserGetInfo: TWin95_NetWkstaUserGetInfo;
Win95_NetApiBufferFree: TWin95_NetApiBufferFree;
WinNT_NetWkstaGetInfo: TWinNT_NetWkstaGetInfo;
WinNT_NetApiBufferFree: TWinNT_NetApiBufferFree;
WSNT: ^WKSTA_INFO_100;
WS95: ^WKSTA_USER_INFO_1;
EC: DWORD;
hNETAPI: THandle;
begin
try
Result := '';
if IsWinNT then
begin
hNETAPI := LoadLibrary('NETAPI32.DLL');
if hNETAPI 0 then
begin @WinNT_NetWkstaGetInfo := GetProcAddress(hNETAPI, 'NetWkstaGetInfo');
@WinNT_NetApiBufferFree := GetProcAddress(hNETAPI, 'NetApiBufferFree');
EC := WinNT_NetWkstaGetInfo(nil, 100, Pointer(WSNT));
if EC = 0 then
begin
Result := WideCharToString(WSNT^.wki100_langroup);
WinNT_NetApiBufferFree(Pointer(WSNT));
end;
end;
end
else
begin
hNETAPI := LoadLibrary('RADMIN32.DLL');
if hNETAPI 0 then
begin @Win95_NetApiBufferFree := GetProcAddress(hNETAPI, 'NetApiBufferFree');
@Win95_NetUserGetInfo := GetProcAddress(hNETAPI, 'NetUserGetInfoA');
EC := Win95_NetWkstaUserGetInfo(nil, 1, Pointer(WS95));
if EC = 0 then
begin
Result := WS95^.wkui1_logon_domain;
Win95_NetApiBufferFree(Pointer(WS95));
end;
end;
end;
finally
if hNETAPI 0 then
FreeLibrary(hNETAPI);
end;
end;
procedure TForm1.Button1Click(Sender: TObject);
begin
ShowMessage(GetDomainName);
end;