You can make a Windows API (application programming interface) call to a Microsoft Windows DLL (dynamic-link library) to get the current user name. The current user name can be obtained by using the GetUserNameA function in ADVAPI32.DLL.
Microsoft Excel does not have the built-in functionality to access the computer's current user name. However, you can use the Declare statement in a Visual Basic for Applications macro to call a Microsoft Windows function that will return the current user name.
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Type the following code into a new module:
' Makes sure all variables are dimensioned in each subroutine.
' Access the GetUserNameA function in advapi32.dll and
' call the function GetUserName.
Declare Function GetUserName Lib "advapi32.dll" Alias "GetUserNameA" _
(ByVal lpBuffer As String, nSize As Long) As Long
' Main routine to Dimension variables, retrieve user name
' and display answer.
' Dimension variables
Dim lpBuff As String * 25
Dim ret As Long, UserName As String
' Get the user name minus any trailing spaces found in the name.
ret = GetUserName(lpBuff, 25)
UserName = Left(lpBuff, InStr(lpBuff, Chr(0)) - 1)
' Display the User Name
Run the macro Get_User_Name. Note that the current user name will appear in a message box.