直接调用下列方法，输入参数即可转换

wstring InjectDll::charToWstring(const char* szIn)
{
  int length = MultiByteToWideChar(CP_ACP, 0, szIn, -1, NULL, 0);
  WCHAR* buf = new WCHAR[length + 1];
  ZeroMemory(buf, (length + 1) * sizeof(WCHAR));
  MultiByteToWideChar(CP_ACP, 0, szIn, -1, buf, length);
  std::wstring strRet(buf);
  delete[] buf;
  return strRet;
}