How can I convert a complete project in C ++ to a dll, to use in my other projects? I have searched the Internet about how to convert, but the truth is that I never tried everything in c # using the class and importing it into my main program. In conclusion, how can I convert a complete project to dll. And how would it be in this case the call to their methods. As Ide I am using Qt so it is even more difficult to find information about it. Basically it is some suggestion to start migrating my project made in QT, convert it to a .dll and be able to include features of it to my other projects.