Check out example codes for "c++ convert const char* to LPCWSTR". It will help you in understanding the concepts better.

Code Example 1

const char *p = "D:\\";
  const WCHAR *pwcsName; //LPCWSTR
  
  // required size
  int size = MultiByteToWideChar(CP_ACP, 0, p, -1, NULL, 0);
  // allocate it
  pwcsName = new WCHAR[nChars];
  MultiByteToWideChar(CP_ACP, 0, p, -1, (LPWSTR)pwcsName, size);
  // use it....
    
  // delete it
  delete [] pwcsName;
}

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