C / C++ / MFC

#include <comdef.h>

class MyString {
public:
  std::string& get() {
    return m_str;
  }
  
  operator BSTR () {
    _bstr_t tmp;
    tmp = m_str.c_str();
    return tmp.copy();
  }
protected:
  std::string m_str;
};

std::string strName = "Jim";
BSTR bstrName;
MyString s;
s.get() =  strName;

bstrName = s;

HINSTANCE hInstance;
TCHAR szBuffer[128];
hInstance = LoadLibrary(_T("MyResourceLib.dll"));
LoadString(hInstance, ID_MSG_SOMESTRING, szBuffer, sizeof(szBuffer));

T t1;
T t1b;
T * pt2=&t1; //OK
pt2=&t1b; // OK, now pt2 points to t1b

T t1;
T t1b;
T & t2=t1; //OK
t2=t1b; // WATCH OUT!

t1=t1b;

m.template operator[]<int>("str");

template <typename T>
struct Type2Type // borrowed from Alexandrescu's "Modern C++ Design"
{
  typedef T type;
};
 
struct MyClass
{
  template <typename T> T operator () (const char * x,Type2Type<T>)
  {
    T t;
    ...
    return t;
  }
};
 
int main()
{
  MyClass m;
  m("str",Type2Type<int>());
  m("str",Type2Type<double>());
  return 0;
}