Hi, Recently I've tried to implement Andrei's ScopeGuard (see http://www.cuj.com/experts/1812/alexandr.htm?topic=experts for details) with boost.function and boost.bind. Is there anything wrong with it? Thanks for reviewing. #include <boost/function.hpp> #include <boost/bind.hpp> #include <boost/utility.hpp> #define ON_BLOCK_EXIT(x) scoped_guard guard##__LINE__(::boost::bind##x) class scoped_guard: ::boost::noncopyable { private: typedef const ::boost::function<void> f_type; // reference might cause crash bool dismissed_; f_type f_; public: scoped_guard(f_type& v): f_(v), dismissed_(false) {} ~scoped_guard() throw() { if(!dismissed_) try {f_();} catch(...) {} } void dismiss() throw() { dismissed_ = true; } }; With the macro ON_BLOCK_EXIT, we can easily use it like this: // ... #include <stdio.h> int main() { FILE* fp = fopen("hello.txt", "r"); ON_BLOCK_EXIT((fclose, fp)); //scoped_guard guard(boost::bind(fclose, fp)); return 0; }　　 　　　　　　　　　　　　　　Jon Wang babysloth@c-view.org 　　　　　　　　　　　 　2002-07-03