Re: Re: [sigc] How to do selective signal propagation ?

[Eric NICOLAS <nicolas00 wanadoo fr>]

> De : Ulrich Eckhardt <eckhardt satorlaser com>
> 
> Eric NICOLAS wrote:
> > What I need is to filter signal propagation based on a signal's argument. I
> > have a signal <void, double value, int kind>. Clients connects to this
> > signal saying "I want to receive updates on value of kind 'mykind'".. Now a
> > value of kind 'akind' changes, only those clients connected who wants
> > values of 'akind' should be notified.
> 
> Hmmm, I'm not a master of the libsigc code, but I think that one could solve 
> this dilemma. 
> 
> template<int filter, class Value>
> void adapter( int id, Value val)
> {
>   if(id==filter)
>      real_function(id,value);
> }

Hum... I see.
Can you give a more complete example as to how I could use such an adapter ?
I don't see any mention of "adapters" in the SigC++ documentation.

Thansk.