Thread: store in std::map all kind of structs

Hello all and sorry for my bad english
i have std::map that uses string as akey and i like it to hold different kinds of
structs ( my structs define in the application )
but how can i tell the map to hold it
for example : std::map<std::string, ...here go's what ??... > mystructsMap;
and say i have struct1 struct2 struct3 in my application