does anyone have a simple example of a map in shared memory, where the key is also in shared memory & not a simple "int"? I am trying to use a key of type boost::interprocess::basic_string<wchar_t, ...>, value of type unsigned long, and I am not sure about the subtleties of using boost::interprocess::map<>.insert() where the key lives in shared memory. (the example http://www.boost.org/doc/libs/1_35_0/doc/html/interprocess/quick_guide.html#... is useful but both the key and value are simple types.) If I understand right, you have to insert() an instance of the std::pair<> class. But if the map is in shared memory, does this mean the std::pair<> also has to live in shared memory as well? (vs. a local std::pair<> that exists on the stack) For some reason the basic_string<wchar_t,...> seems to have been instantiated in some other weird area of memory instead & it's very difficult to debug + figure out what's going wrong.