No especificas el sistema operatico donde corre tu programa pero para
W95/98 puedes usar esto... No lo he probado en NT, 2000
En un formulario, pon una etiqueta llamada lblWelcome y pega el codigo de abajo para probar la API :
Option Explicit
Private Declare Function GetUserName Lib "advapi32.dll" Alias "GetUserNameA" (ByVal lpBuffer As String, nSize As Long) As Long
' Return the user's name.
Private Function UserName() As String
Const UNLEN = 256 ' Max user name length.
Dim user_name As String
Dim name_len As Long
user_name = Space$(UNLEN + 1)
name_len = Len(user_name)
If GetUserName(user_name, name_len) = 0 Then
UserName = "<unknown>"
Else
UserName = Left$(user_name, name_len - 1)
End If
End Function
Private Sub Form_Load()
lblWelcome.Caption = "Welcome " & UserName() & "!"
End Sub
Saludos...