🚀 go-pugleaf

I'm trying to use a Windows API call to get the full name of the person 
logged into the current system. When I compile my code below I get an 
"Unresolved external 'GetUserNameExW' referenced from..." linker error.

Anyone know what I'm doing wrong?

Thanks,
Jeff

//---------------------------------------------------------------------------
#define SECURITY_WIN32 1
#define UNICODE 1

#define MAXBUFF 512
//---------------------------------------------------------------------------
#include <Security.h>
//---------------------------------------------------------------------------

WCHAR   wszDN[MAXBUFF];  //Character buffer for DN Name
ULONG   cchDN = MAXBUFF; //Length of DN Name

if (!GetUserNameEx(NameDisplay, wszDN, &cchDN))
    Application->MessageBox("Error getting user''s full name", "Error", 
MB_OK|MB_ICONERROR);
else
    lbeAddress->Text = static_cast<String>(wszDN);