API doubt!!!

Hi friends,
Im new to API. I want to know the user name who has logged in the machine. What API should I use?
Pls help!!!

Cheers
Parasuraman

Use the GetUserName API:

Code:

---

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

---

Since you are new to API stuff I add this too..

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


Private Sub Your_Sub()
Dim strUSerName As String
'Create a buffer
strUserName = String(100, Chr$(0))
'Get the username
GetUserName strUserName, 100
'strip the rest of the buffer
strUserName = Left$(strUserName, InStr(strUserName, Chr$(0)) - 1)

MsgBox "Hello " + strUserName
End Sub

Thanx alot CyeberCarsten and Kumar
Its working excellent.

Thanx alot again

Parasuraman