为什么找不到ExitWindows函数的详细介绍?而且调用后只是注销不能重启？

为什么找不到ExitWindows函数的详细介绍?而且调用后只是注销不能重启？

能找到ExitWindows函数但是好像这个函数不起作用

需要更改权限
void ShutDown()
{

if (dwVersion < 0x80000000)
{
TOKEN_PRIVILEGES tkp,tkpnewbutignored;
HANDLE hdltokenhandle;
LUID tmpluid;
BOOL rc;
DWORD lbufferneeded;
HANDLE hdlprocesshandle = GetCurrentProcess();
rc = OpenProcessToken(hdlprocesshandle,TOKEN_ADJUST_PRIVILEGES|TOKEN_QUERY, &hdltokenhandle);
rc = LookupPrivilegeValue("","SeShutdownPrivilege", &tmpluid);
tkp.PrivilegeCount = 1; // one privilege to set
tkp.Privileges[0].Luid = tmpluid;
tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
rc = AdjustTokenPrivileges(hdltokenhandle,FALSE,&tkp,sizeof(tkpnewbutignored),&tkpnewbutignored, &lbufferneeded);
ExitWindowsEx(EWX_SHUTDOWN|EWX_FORCE, 0);
}
else
{
ExitWindowsEx(EWX_SHUTDOWN,0);
}
}