FormatMessage 格式化 GetLastError 擷取的錯誤碼

 

void FormatErrCodeMessage(LPCTSTR lpszFunction, DWORD dwErrorCode) {   // Retrieve the system error message for the error code  DWORD dwMaxTCharLen = 32000U;  LPTSTR lpDisplayBuf = (LPTSTR)LocalAlloc(LPTR, dwMaxTCharLen*sizeof(TCHAR));   LPTSTR lpMsgBuf = NULL;  if(FormatMessage(    FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_IGNORE_INSERTS, //dwFlags    NULL, //lpSource    dwErrorCode, //dwMessageId    0, //GetUserDefaultLangID(),// MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),//dwLanguageId    (LPTSTR)&lpMsgBuf, //lpBuffer    0, //nSize    NULL //Arguments    ))  {    _stprintf_s(lpDisplayBuf, dwMaxTCharLen,      TEXT("%s failed with error code(%lu)\r\n:%s"),       lpszFunction, dwErrorCode, lpMsgBuf);  }  else  {    _stprintf_s(lpDisplayBuf, dwMaxTCharLen,      TEXT("FormatMessage function failed with error %lu"),      GetLastError());  }  if(lpDisplayBuf)    MessageBox(NULL, lpDisplayBuf, TEXT("Error"), MB_OK);   if(lpMsgBuf)    LocalFree(lpMsgBuf);  if(lpDisplayBuf)    LocalFree(lpDisplayBuf);  //ExitProcess(dwErrorCode); }