Sergey Lukin wrote:

Peter Dimov replied:

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t.async_wait(boost::bind(Component::Method1, &y, 10, boost::bind (DPC::Print1, &x, 2), &t));

You need to prevent the inner bind from being treated as a subexpression of the outer bind. Either assign it to a function<>:

boost::function<void()> f = boost::bind( DPC::Print1, &x, 2 ); t.async_wait( boost::bind( Component::Method1, &y, 10, f ) ); or use boost::protect, as explained at the end of

http://boost.org/libs/bind/bind.html#nested_binds

I tried both suggested solutions but still have the same errors

boost::function<void(int)> f = boost::bind( DPC::Print1, &x, 2 ); t.async_wait( boost::bind( Component::Method1, &y, 10, f, &t ) ); or t.async_wait( boost::bind( Component::Method1, &y, 10, boost::protect(f), &t ) );

Your Component::Method1 takes two arguments, three with the implicit 'this': class Component { public: template <typename Handler> void Method1 (int x ,Handler h) { x++; h(); } }; but you are passing four, there is one extra &t at the end. You should also use & with member functions, &Component::Method1, although some compilers allow you to omit it.

Peter Dimov wrote:

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boost::function<void(int)> f = boost::bind( DPC::Print1, &x, 2 ); t.async_wait( boost::bind( Component::Method1, &y, 10, f, &t ) ); or t.async_wait( boost::bind( Component::Method1, &y, 10, boost::protect(f), &t ) );

Your Component::Method1 takes two arguments, three with the implicit 'this':

class Component { public: template <typename Handler> void Method1 (int x ,Handler h) { x++; h(); } };

but you are passing four, there is one extra &t at the end.

Yes, you were right. I was passing not needed fifth parameter. But anyway this haven't changed error messages much. in both cases I am getting boost::bind errors ...expects 2 arguments - 4 provided ...expects 3 arguments - 4 provided ...expects 5 arguments - 4 provided ...expects 6 arguments - 4 provided ... Note: I'm not getting ... any error message for the 4 argument case, which is my case. t.async_wait( boost::bind( &Component::Method1, &y, 10, f ); t.async_wait( boost::bind( &Component::Method1, &y, 10, boost::protect(f) );

You should also use & with member functions, &Component::Method1, although some compilers allow you to omit it.

Jeff Flinn wrote:

The types above are incompatible, use what Peter suggested previously:

boost::function<void()> f = boost::bind( DPC::Print1, &x, 2 );

I tried this also - no effect whatsoever. Have you tried to compile my code ? Thank you in advance, Sergey