How get user name

[jasmin m]

Hi,

Can somebody, write a simple code on how to get user name using this
function GetUserName it must include windows.h , I try it to understand, but
didn't find good explanation on the internet.

Thanks!

[Duthomhas]

#include <iostream>
using namespace std;

#include <windows.h>
#include <Lmcons.h>

int main()
  {
  TCHAR name [ UNLEN + 1 ];
  DWORD size = UNLEN + 1;

  if (GetUserName( (TCHAR*)name, &size ))
    cout << "Hello, " << name << "!\n";
  else
    cout << "Hello, unnamed person!\n";

  return 0;
  }

Hope this helps.

_{[edit] Modified to use TCHAR for unicode...}

[jasmin m]

It didnt work.
I get this error:

Error 1 error C2664: 'GetUserNameW' : cannot convert parameter 1 from 'char [257]' to 'LPWSTR' c:\documents and settings\administrator\my documents\visual studio 2005\projects\jasmin_mahmutovic\jasmin_mahmutovic\main.cpp 14

[mcleano]

Code works fine. Look at your error it has 'GetUserNameW << maybe thats the problem?

[helios]

Are you trying to get the user name in wide characters? If so, you should change the type of name to wchar_t (wchar_t name[UNLEN+1];) and then, while calling the function cast it to LPWSTR:
GetUserNameW( (LPWSTR)name, &size )

[jasmin m]

I just copy/paste your code , and get that error.
----------------------------------------------------- It work when I compile it in DEV++ , but dont work in visual studio 2005 Any sugestion,

-----------------------------------------------------
Can this be fixed.

[george135]

Read the Error description , it tells you the solution !
=> You're compiling in UNICODE.

[jasmin m]

The solution is:

[Project] [Properties] [Configuration Properties] [General]
[Character Set] => Use Multi-Byte Character Set

[cheesy]

I tried copy / pasting this code but the result came out is:

Hello, 0012FD5C

Any help? =\

[Duthomhas]

Argh, I think I see a bug in my code. You're compiling with UNICODE, right? Try

13 wcout << L"Hello, " << name << L"!\n";

(I think that will work...)

[cheesy]

It did, thanks. :)