Hi there my compiler doesn't like binding the gil::at_c function. I'm using MSVC 7.1 SP1. Please correct if I'm wrong but I think you need to supply a function pointer cast for overloaded function when using this compiler. But for some reasons I cannot make it happen. template < typename CHANNEL > void set_zero( CHANNEL c ) { c = 0; } int main() { rgb8_image_t src; bmp_read_image( ".\\flower.bmp", src ); typedef channel_type<rgb8_pixel_t>::type return_t; add_reference<return_t>::type (*AA)( rgb8_pixel_t& ) = &gil::at_c<0>; for_each( view( src ).begin() , view( src ).end() , bind( &set_zero, bind( AA, _1 ))); return 0; } compiler error is: \gil\repos\gil_2\libs\gil\toolbox\test.cpp(74) : error C2440: 'initializing' : cannot convert from 'overloaded-function' to 'boost::add_reference<T>::type (__cdecl *)(boost::gil::rgb8_pixel_t &)' with [ T=boost::gil::bits8 ] None of the functions with this name in scope match the target type Thanks ahead, Christian