如何将GetLastError()返回的错误代码转换成字符串

LPVOID   lpMsgBuf;
DWORD lastError=GetLastError ();
FormatMessage(
FORMAT_MESSAGE_ALLOCATE_BUFFER   |
FORMAT_MESSAGE_FROM_SYSTEM   |
FORMAT_MESSAGE_IGNORE_INSERTS,
NULL,
lastError,
MAKELANGID(LANG_NEUTRAL,   SUBLANG_DEFAULT),   //   Default   language
(LPTSTR)   &lpMsgBuf,
0,
NULL
);
MessageBox(hWnd,(LPCTSTR)lpMsgBuf,"Error",MB_OK);