Hi all, I am writing a library that aims to make using dynamic libraries easier across platforms. The aim is the following : dynamic::library lib("sharedlib.so"); dynamic::function<int (int, int> fn(lib, "fn"); int result = fn(1, 2); So to achieve this I needed to implement forwarding functions and I used function_types to make this easier. This all worked fairly well, but in general I really struggled with figuring out how to use function_types. Though simple uses were fairly straight forward, as soon as I came across a STDCALL function it all fell over and I got compiler errors "'value' : is not a member of 'boost::function_types::function_arity<T>". I have managed to fix it, but the route there was far from obvious, and I would put that entirely down to incomplete and misleading documentation. Eventually, I found the Reference->Macros section which discussed calling conventions : BOOST_FT_CC_* Enables a specific calling convention. * dentoes the macro suffix, as defined by BOOST_FT_CC_NAMES or BOOST_FT_BUILTIN_CC_NAMES. The macro expands to a list of restrictions, separated by the | character. Possible items are: callable_builtin member non_member variadic non_variadic If no such macro is defined for a particular calling convention, it is disabled. Example: #define BOOST_FT_CC_STDCALL non_variadic|callable_builtin // enables stdcall calling convention for all non-variadic, // callable, builtin types Ahah! It looked like I needed to #define BOOST_FT_CC_STDCALL non_variadic|callable_builtin, as per the example there. However this caused monstrous compile errors from the guts of function_types initially stating that "'...' requires cdecl". Further reading pointed me to this : BOOST_FT_COMMON_X86_CCs Defining this macro causes the following macros to be defined, if not defined already: #define BOOST_FT_CC_CDECL BOOST_FT_COMMON_X86_CCs #define BOOST_FT_CC_STDCALL non_variadic|BOOST_FT_COMMON_X86_CCs #define BOOST_FT_CC_FASTCALL non_variadic|BOOST_FT_COMMON_X86_CCs So I added the following : #define BOOST_FT_COMMON_X86_CCs But this also failed with more bizarre errors, eventually I experimented with : #define BOOST_FT_COMMON_X86_CCs 1 Which finally worked. But the docs do not indicate that you need to define it with any particular value. The whole problem would have been so much simpler if there was one of more of the following sections in the documentation : "Getting Started", "Calling Conventions", "Common Pitfalls", or an FAQ. Sam