Re: Help with policy based design

Finally I am starting with the following code given by soemone on this ng :

class IConvPtr {
    void* m_ptr;
public:
    IConvPtr() : m_ptr(0) {}

    operator void *() { return m_ptr; }

    void* alloc(size_t bytes, bool fZero = false) {
        HANDLE hHeapProc = GetProcessHeap();
        DWORD dwFlags = (fZero == true) ? HEAP_ZERO_MEMORY : 0;
        if (hHeapProc) {
            return HeapAlloc(hHeapProc,dwFlags,bytes);
        }
    }
         void dealloc(void* ptr) {
          ...
         }

    IConvPtr& operator=(wchar_t* pStringW) {
#ifndef USE_NATIVE_UNICODE
        int nBufLen = ::WideCharToMultiByte(CP_UTF8, 0, (LPCWSTR)pStringW, -1,
0, 0, 0, 0);
        if (nBufLen) {
            LPSTR buf = (LPSTR) alloc(nBufLen+1);
            if (buf) {
                ::WideCharToMultiByte(CP_UTF8, 0, (LPCWSTR)pStringW, -1, buf,
nBufLen, 0, 0);
                m_ptr = buf;
                                 // NOW I am supposed to deallocate but
depends how original string was allocated or even if it was allocated
            }
        }
#else
        // We are using utf16 so nothing to do - only assign
        m_ptr = pStringW;
#endif
        return *this;
    }

    template <typename T>
    IConvPtr& operator=(T aptr) {
        m_ptr = aptr;
        return *this;
    }
};

Now the question is, it is possible to add policy based designed to
choose memory allocation. I would need to have a alloc and dealloc method.