Initial commit

example/plugin_library.cpp

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+// Copyright 2011-2013 Renato Tegon Forti
+// Distributed under the Boost Software License, Version 1.0.
+// (See accompanying file LICENSE_1_0.txt
+// or copy at http://www.boost.org/LICENSE_1_0.txt)
+
+// For more information, see http://www.boost.org
+
+#include <iostream>
+
+//[plugcpp
+
+#include <boost/config.hpp>
+#define LIBRARY_API BOOST_SYMBOL_EXPORT
+   
+#include "plugin_api.hpp"
+
+extern "C" LIBRARY_API my_plugin_api* create_my_plugin(void);
+extern "C" LIBRARY_API void delete_my_plugin(my_plugin_api* myplugin);
+
+class my_plugin_sum : public my_plugin_api
+{
+public:
+
+   float version() 
+   { 
+      return 1.0;  
+   };
+
+   float calculate(float x, float y) 
+   { 
+      return x+y; 
+   };
+   
+   ~my_plugin_sum()
+   {
+      std::cout << ";o)" << std::endl;
+   }
+};
+
+my_plugin_api* create_my_plugin(void)
+{
+   my_plugin_api *myplugin = new my_plugin_sum();
+   return myplugin;
+}
+
+void delete_my_plugin(my_plugin_api* myplugin)
+{
+   delete myplugin;
+}
+//]
+
+
+// platform dependent initialization sample
+//
+
+#if defined( BOOST_WINDOWS_API )
+
+// return TRUE on success and FALSE if an error occurs. returning
+// FALSE will cause the library to be unloaded.
+BOOL WINAPI DllMain
+(
+    HINSTANCE hinstDLL,
+    DWORD fdwReason,
+    LPVOID lpReserved
+)
+{
+    switch (fdwReason)
+    {
+    case DLL_PROCESS_ATTACH:
+        // add initialization code...
+        break;
+    case DLL_PROCESS_DETACH:
+        // add clean-up code...
+        break;
+    }
+
+    return (TRUE);
+}
+
+#elif defined( BOOST_POSIX_API )
+
+// GCC
+void __attribute__ ((constructor)) my_load(void);
+void __attribute__ ((destructor)) my_unload(void);
+
+// called when the library is loaded and before dlopen() returns
+void my_load(void)
+{
+   // Add initialization code
+}
+
+// called when the library is unloaded and before dlclose() returns
+void my_unload(void)
+{
+   // Add clean-up code
+}
+
+#endif
+
+
+