Supose i have a MFC project, and a subproject(depend of the other)that is a DLL (dinamic link library). I add a class to the DLL project and i try to create an object of this class in the other project. I can´t even if i make and #include "classname.h" in the correspondent header file. Is that because i ´m using wrong the concept. What have i do? THANKS PERE