How to use macros from a C + + dynamic library with a static library

In which CPP file the dynamic library or static library is used, the macro in the library is added to the preprocessing command for the project where the H/cpp file resides.

If there is a library project add, its header file is as follows

#ifndef _add_h #define _add_h#if defined (_WIN32) | | Defined (__mingw32__)#   if  defined (add_exports) #       define Add_export __declspec ( dllexport) #   | | ! defined (add_use_static_lib) #       define Add_export __declspec (dllimport) #   else#       define add_export#    int Add (intint  b); #endif

When you compile a dynamic library on VS, you need to add add_exports to the preprocessor directives in the Add Project.

Another test project: if it is going to use the ADD function in a dynamic library, it needs to use the Add_use_dll_import preprocessing directive in its engineering.

How to use macros from a C + + dynamic library with a static library