In a rush here, you want boost function_traits. Damien _____ From: boost-users-bounces@lists.boost.org [mailto:boost-users-bounces@lists.boost.org] On Behalf Of Robert Dailey Sent: Tuesday, February 05, 2008 5:00 PM To: boost [usr] Subject: [Boost-users] [function] How to obtain the signature type? Hi, Currently I have the following: typedef boost::function<void (int)> MyFunction; Is there a typedef in the boost::function class for the Signature template parameter? I need access to the function type passed into the boost::function object. I've tried finding the boost::function class in the source, but that turned out to be impossible. The documentation also does not explain how to do this from what I saw. Any help is appreciated.