[C++] 用程式關閉電腦最簡單的方法

使用指令:
shutdown [{-l|-s|-r|-a}] [-f] [-m [\\ComputerName]] [-t xx] [-c "message"] [-d[u][p]:xx:yy], MSDN

例如: shutdown -r -f -t 60 // 關機後, 自動 reboot

或使用 WinAPI

ExitWindowsEx

ex:
ExitWindowsEx(EWX_POWEROFF | EWX_FORCE,0); // 結束作業系統，並關閉電源
ExitWindowsEx(EWX_REBOOT | EWX_FORCE,0); // 重新開機

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下面是一個完整的範例


來源: http://msdn2.microsoft.com/en-us/library/aa376871.aspx

BOOL MySystemShutdown()
{
  HANDLE hToken;
  TOKEN_PRIVILEGES tkp;

  // Get a token for this process.

  if (!OpenProcessToken(GetCurrentProcess(),
       TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken))
     return( FALSE );

  // Get the LUID for the shutdown privilege.

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

  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 FALSE;

  // Shut down the system and force all applications to close.

  if (!ExitWindowsEx(EWX_SHUTDOWN | EWX_FORCE,
              SHTDN_REASON_MAJOR_OPERATINGSYSTEM |
              SHTDN_REASON_MINOR_UPGRADE |
              SHTDN_REASON_FLAG_PLANNED))
     return FALSE;

  return TRUE;
}