Still celebrating National IT Professionals Day with 3 months of free Premium Membership. Use Code ITDAY17

x
?
Solved

Getting windows login name

Posted on 2007-04-07
4
Medium Priority
?
167 Views
Last Modified: 2010-04-30
Hi,
  For getting the windows login user name as a string , what is to be done ?
 I actually used GetEnvironmentVariable, but the value coming when compared to a string variable is not matching

    Thanks,
      Sam
0
Comment
Question by:sgs1970
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 2
  • 2
4 Comments
 
LVL 143

Expert Comment

by:Guy Hengel [angelIII / a3]
ID: 18869335
what do you mean with "is not matching" ?
can you explain that.
0
 

Author Comment

by:sgs1970
ID: 18869336

 Hi,
  See the subroutine I used

 
Function GetUserName() As String
    Dim strUserName As String * 255
    strUserName = ""
    'Create a string buffer of 255 chars in length
    Dim X As Integer
    X = GetEnvironmentVariable("USERNAME", strUserName, Len(strUserName))
    If X > 0 Then        'Look for Null Character, usually included
     X = InStr(strUserName, vbNullChar)
    'Trim off buffered spaces too
        If X > 0 Then
   
         Else
            ''  MsgBox (Left$(strUserName, x))
        End If
    End If

   GetUserName = strUserName
End Function
0
 

Author Comment

by:sgs1970
ID: 18869338
The username is not read as a  proper string , it seems
0
 
LVL 143

Accepted Solution

by:
Guy Hengel [angelIII / a3] earned 500 total points
ID: 18869341
yes, the API returns a null-terminated string (comes from C programming).
you have to do a left() on the returned string, if the vbNullchar is found:

Function GetUserName() As String
    Dim strUserName As String * 255
    strUserName = ""
    'Create a string buffer of 255 chars in length
    Dim X As Integer
    X = GetEnvironmentVariable("USERNAME", strUserName, Len(strUserName))
    If X > 0 Then        'Look for Null Character, usually included
     X = InStr(strUserName, vbNullChar)
    'Trim off buffered spaces too
        If X > 0 Then
            strUserName = left( strUsername, x-1)
         Else
            ''  MsgBox (Left$(strUserName, x))
        End If
    End If

   GetUserName = strUserName
End Function
0

Featured Post

Free Tool: Subnet Calculator

The subnet calculator helps you design networks by taking an IP address and network mask and returning information such as network, broadcast address, and host range.

One of a set of tools we're offering as a way of saying thank you for being a part of the community.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Introduction In a recent article (http://www.experts-exchange.com/A_7811-A-Better-Concatenate-Function.html) for the Excel community, I showed an improved version of the Excel Concatenate() function.  While writing that article I realized that no o…
Since upgrading to Office 2013 or higher installing the Smart Indenter addin will fail. This article will explain how to install it so it will work regardless of the Office version installed.
As developers, we are not limited to the functions provided by the VBA language. In addition, we can call the functions that are part of the Windows operating system. These functions are part of the Windows API (Application Programming Interface). U…
This lesson covers basic error handling code in Microsoft Excel using VBA. This is the first lesson in a 3-part series that uses code to loop through an Excel spreadsheet in VBA and then fix errors, taking advantage of error handling code. This l…
Suggested Courses

670 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question