[Mingw-users] how to use NtShutdownSystem?

[<all...@ho...>]

I want to use NtShutdownSystem to shutdown the system. I use mingw4.1.1 and 
Dev-C++4.9.9.2, when i compile, i reived erros:

[Linker error] undefined reference to `NtShutdownSystem@4'
ld returned 1 exit status 

here is my code(i'm sorry for the urgly code, i picked up from google, and 
i'm a newbie, either mingw, or programming):

#include <stdio.h>
#include <stdlib.h>
#include "windows.h"
#include "ntdll.h"

int main(int argc, char *argv[])
{
HANDLE hToken;
if (OpenProcessToken(GetCurrentProcess(),
TOKEN_QUERY|TOKEN_ADJUST_PRIVILEGES, &hToken))
{
TOKEN_PRIVILEGES tkp;

LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME, &tkp.Privileges[0].Luid);

tkp.PrivilegeCount = 1;
tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;

AdjustTokenPrivileges(hToken, FALSE, &tkp, 0, NULL, 0);
CloseHandle(hToken);
}

SHUTDOWN_ACTION myAction;
myAction = ShutdownPowerOff;
NtShutdownSystem(myAction);
}

who can show me the full successful code?

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