Hello,

I've a class with multiple boost signals like this

class A
{
   private:
      boost::signal<void()> m_voidSignal ;
      boost::signal<void (const string&)> m_stringSignal ;
   public:
      boost::signal<void()>& voidSignal() { return m_voidSignal ; }
      boost::signal<void (const string&)>& stringSignal { return m_stringSignal ; }
} ;

when i'm connecting signals to slots, I do some thing like this.

A a;
a.voidSignal().connect (...) ;

This works fine. But I've many signals with different signatures. what I want to achieve is a single interface where I want to map every signal to enums and access signal from the enums like this.

class A
{
   public:
      typedef enum {
         VoidSignal, StringSignal ... } ; SignalIds ;
      
      // return type should be deducted automatically from the enum
         ReturnType& getSignal (SignalId) ; 
...
} ;

So that I can do some thing like this 

A a;
a.getSignal (A::VoidSignal).connect (...) ;
a.getSignal (A::StringSignal).connect (...) ;

Basically with a single interface, I want to change the return type automatically. Can I achieve something like this with any of the boost libraries (mpl, fusion etc) ? Any pointers on this would be of great help.

Thanks,
Surya