VSc++ Computer shut-reboot-powerOff

/****************************************************************************
 * Program Name : Computer Power Options
 * Program Ver. : v1.0.0.0
 * Module Name  : ShutDown.exe
 * Last Edition : 20.03.2013
 * Optimization : No code analysis issues were detected.
 ****************************************************************************/
#include <Windows.h>
#include <strsafe.h>

#define BUF_SIZE 260

int wmain( int argc, TCHAR *argv[] )
{
TCHAR param[MAX_PATH] = L"";
HANDLE hToken;
TOKEN_PRIVILEGES tkp;
DWORD op;

if ( argc == 2 )
StringCchCat( param, BUF_SIZE, argv[1] );
else {
wprintf( L"\nKullanim :\n\tShutDown <parametre>" );
wprintf( L"\nKullanilabilir parametre degerleri:" );
wprintf( L"\n\tlogoff   : Oturumunuzu sona erdirir." );
wprintf( L"\n\tshutdown : Bilgisayari kapatir." );
wprintf( L"\n\treboot   : Bilgisayari yeniden baslatir." );
wprintf( L"\n\tpoweroff : Bilgisayari kapatip gucu keser." );
return 1;
}

if ( ! lstrcmp( param, L"logoff"   ) )
op = EWX_LOGOFF;
else if ( ! lstrcmp( param, L"shutdown" ) )
op = EWX_SHUTDOWN;
else if ( ! lstrcmp( param, L"reboot"   ) )
op = EWX_REBOOT;
else if ( ! lstrcmp( param, L"poweroff" ) )
op = EWX_POWEROFF;
else
op = 999;

op = op | EWX_FORCE;

// Get a token for this process.
if ( ! OpenProcessToken( GetCurrentProcess(),
TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY,
&hToken
  )
  )
return 1;

// Get the LUID for the shutdown privilege.
LookupPrivilegeValue( NULL, // Name of the system
 SE_SHUTDOWN_NAME, // Name of the privilege
 &tkp.Privileges[0].Luid // Locally unique identifier
);

tkp.PrivilegeCount = 1; // one privilege to set
tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;

// Get the shutdown privilege for this process.
AdjustTokenPrivileges( hToken,
  FALSE,
  &tkp,
  0,
  ( PTOKEN_PRIVILEGES ) NULL,
  0
);

if ( GetLastError() != ERROR_SUCCESS )
return 1;

ExitWindowsEx( op, 0 );

return 0;
}