How can I convert PCWSTR to a char[] or wchar_t[] - c++

Question

I'm trying to create a file, where one of the parameters has been passed in to the method and is of the type PCWSTR. My code creates a .url file and saves the Url into the file:
wchar_t array1[] = "[InternetShortcut]\nURL=";
wchar_t array2[] = pdwFavoriteUrl;
wchar_t * DataBuffer = new wchar_t[wcslen(array1) + std::strlen(array2) + 1];
std::strcpy(DataBuffer,array1);
std::strcat(DataBuffer,array2);
// Write data to file
DWORD dwBytesToWrite = (DWORD)strlen(DataBuffer);
DWORD dwBytesWritten = 0;
BOOL bErrorFlag = FALSE;
bErrorFlag = WriteFile(hFile, DataBuffer, dwBytesToWrite, &dwBytesWritten, NULL);
if (FALSE == bErrorFlag)
{
// Log error
hr = E_FAIL;
}
else
{
if (dwBytesWritten != dwBytesToWrite)
{
// Log error
hr = E_FAIL;
}
else
{
// Log success
hr = S_OK;
//_tprintf(TEXT("Wrote %d bytes to %s successfully.\n"), dwBytesWritten, argv[1]);
}
}
CloseHandle(hFile);
I am aware that the code will not compile as-is, since there are conflicting versions of unicode and non-unicode string methods. The line of interest is this one:
wchar_t array2[] = pdwFavoriteUrl;
pdwFavoriteUrl is of type PCWSTR and there is no way around it. Please help convert it to wchar_t[] (preferred) or char[].

Answer 1

AFAIK PCWSTR is just an alias for wchar_t* and in case it is null-terminated that the simplest thing to do would be using it to construct an object of type std::wstring. Just pass it to constructor:
PCWSTR wcstr = L"My String";
std::wstring wstr(wcstr);
and work with std::wstring objects instead of doing evil stuff such as:
wchar_t * DataBuffer = new wchar_t[wcslen(array1) + std::strlen(array2) + 1];
which will probably bring you nothing but unpleasant problems and memory leaks.

Answer 2

Remove
wchar_t array2[] = pdwFavoriteUrl;
and change the call to strcat to
std::strcat(DataBuffer, pwdFavoriteUrl);
(and similarly, replace array2 with pwdFavoriteUrl in the call to strlen.)
Note that PCWSTR is just
typedef const wchar_t * PCWSTR;