Hi to all, i use libboost recently, it is the ideal solution for my software c++. Now I'm using asio and I need to invoke a function like this: fun(time_from_string("2010-01-30 5:03:02"),bind(&timer::run,this)); The body of fun will look like this: void fun(ptime t,void h) { ... timer.async_wait(h); ... } Obviously the return of the type of bind is not void and that is why there is an error. What kind should be the h parameter? Which is the prototype of fun? Thanks for your attention Claudio -- Caselle da 1GB, trasmetti allegati fino a 3GB e in piu' IMAP, POP3 e SMTP autenticato? GRATIS solo con Email.it: http://www.email.it/f Sponsor: Tutto in tempo reale sul tuo cellulare: news, messaggistica istantanea, email e molto altro ancora con m.email.Scopri di più Clicca qui: http://adv.email.it/cgi-bin/foclick.cgi?mid=8919&d=20090417