ATL / WTL / STL

   std::string in("17,456.43");

   std::istringstream in_us(in);
</code><code></code><code>   in_us.imbue(</code><code>std::locale("English_USA")</code><code>);

   double value;
   in_us >> value;

   std::ostringstream out_de;
   out_de.imbue(</code><code>std::locale("German_germany")</code><code>);
   out_de << std::fixed << std::setprecision(2) << value;

   std::string out = out_de.str(); // Should be "17.456,43"

<code>   std::string in("USD17,456.43");
   std::istringstream in_us(in);
   in_us.imbue(std::locale("English_USA"));


</code><code>   long double value;
</code><code>   std::ios_base::iostate state;

   std::use_facet<std::money_get<char> >(std::locale("English_USA")).get(std::istreambuf_iterator<char>(in_us), std::istreambuf_iterator<char>(), true, in_us, state, value);

   std::ostringstream out_de;
   out_de.imbue(std::locale("German_germany"));
   out_de.flags(out_de.flags()|std::ios_base::showbase);

   std::use_facet<std::money_put<char> >(std::locale("German_germany")).put(std::ostreambuf_iterator<char>(out_de), true, out_de, out_de.fill(), value);

   std::string out = out_de.str();</code><code> // Should be "EUR17.456,43"</code> 

devvvy wrote:

ALso. I don't understand the syntax (I know template...some) but
pair .... why "const"? that "pair" cannot change "Key"? Is that what it means?

template<typename _InterfacePtr> HRESULT _QueryInterface(_InterfacePtr p) throw()
    {
        HRESULT hr;

        // Can't QI NULL
        //
        if (p != NULL) {
            // Query for this interface
            //
            Interface* pInterface;
            hr = p->QueryInterface(GetIID(), reinterpret_cast<void**>(&pInterface));//Error Statementc:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\include\comip.h(850): error C2227: left of '->QueryInterface' must point to class/struct/union


            // Save the interface without AddRef()ing.
            //
            Attach(SUCCEEDED(hr)? pInterface: NULL);
        }
        else {
            operator=(static_cast<Interface*>(NULL));
            hr = E_NOINTERFACE;
        }

        return hr;
    }