The code with API functions below is working perfectly almost on all
computers but on a few ones is not working. It's from the code to get a full
user name.
What could be the cause of this?
Thanks
......
Private Declare Function apiNetGetDCName _
Lib "netapi32.dll" Alias "NetGetDCName" _
(ByVal servername As Long, _
ByVal DomainName As Long, _
bufptr As Long) As Long

' function frees the memory that the NetApiBufferAllocate
' function allocates.
Private Declare Function apiNetAPIBufferFree _
Lib "netapi32.dll" Alias "NetApiBufferFree" _
(ByVal buffer As Long) _
As Long

' Retrieves the length of the specified wide string.
Private Declare Function apilstrlenW _
Lib "kernel32" Alias "lstrlenW" _
(ByVal lpString As Long) _
As Long

Private Declare Function apiNetUserGetInfo _
Lib "netapi32.dll" Alias "NetUserGetInfo" _
(servername As Any, _
UserName As Any, _
ByVal level As Long, _
bufptr As Long) As Long

' moves memory either forward or backward, aligned or unaligned,
' in 4-byte blocks, followed by any remaining bytes
Private Declare Sub sapiCopyMem _
Lib "kernel32" Alias "RtlMoveMemory" _
(Destination As Any, _
Source As Any, _
ByVal Length As Long)

Private Declare Function apiGetUserName Lib _
"advapi32.dll" Alias "GetUserNameA" _
(ByVal lpBuffer As String, _
nSize As Long) _
As Long

Private Const MAXCOMMENTSZ = 256
Private Const NERR_SUCCESS = 0
Private Const ERROR_MORE_DATA = 234&
Private Const MAX_CHUNK = 25
Private Const ERROR_SUCCESS = 0&
.....