Re: [sigc] How to use sigc::bind<>

[Martin Schulze <martin-ml hippogriff de>]

Am 2003.11.09 08:32 schrieb(en) Jeff Franks:
> Hi,
>
> Can you explain how sigc::bind<#> works. I know that the # in the 
> angled brackets indicates the position of the bound argument. I've 
> looked at the examples in the tests directory but I'm still confused.

I will commit some doxygened documentation to cvs later today.
Maybe the following examples are more instructive:

  sigc::signal<void> some_signal;

  void foo(int);
  some_signal.connect(sigc::bind<0>(&foo,10));
    // binds to the last (only) argument of foo
  some_signal.connect(sigc::bind<0>(sigc::ptr_fun(&foo),10))
    // same as above. Of course, sigc::mem_fun() can also be used.

  void bar(int,int);
  some_signal.connect(sigc::bind<0>(&bar,10,20));
    // binds two arguments at a time

  sigc::signal<void,int> other_signal;
  other_signal.connect(sigc::bind<0>(&bar,20));
    // binds to the last (second) argument of bar
  other_signal.connect(sigc::bind<1>(&bar,10));
    // binds to the first argument of bar

Regards,

  Martin