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POPass unmanaged member function pointer to be used by wrapper to connect it to the signal in c++/cli
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copied!<p>I have implemented the Event Handling with Boost::Signal and Boost::Bind in my managed C++ file. Refered the Link:<a href="http://www.radmangames.com/programming/how-to-use-boost-bind" rel="nofollow">Boost::bind</a></p> <p>Also I have created the function pointer in my native C++ file which is passed to my boost::Signal.Connect() as EventHandler in managed code. The code for function which is passed as function pointer in my Native C++</p> <pre><code>std::string NativeCplus::AddFunctionPointer( std::string message ) { return message; } </code></pre> <p>and above function passed as boost::function object in another function NameChangeEvent() as below:</p> <pre><code>void NativeCplus::NameChangeEvent() { UnmanagedNameEvent* unmanagedNameEvent=new UnmanagedNameEvent(); boost::function<std::string (std::string)> f; f=std::bind1st(std::mem_fun(&AlgebraAPI::AddFunctionPointer),this);//FunctionPointer std::string name="abcd"; unmanagedNameEvent->AddEvent(f,name); } </code></pre> <p>In the above code ,I have taken the boost::function and the function pointer is converted to that boost::function (f).(AM I RIGHT IN SAYING THIS?).Then the line unmanagedNameEvent->AddEvent(f,name) where <strong>boost::function(f)</strong> is passed to <strong>AddEvent(f,name)</strong> and this <strong>AddEvent(f,name)</strong> is implemented in my managed C++ code file. Below is my managed C++ Code which is being referred in the native c++ project:</p> <p>//In my c++/CLI Wrapper.cpp</p> <pre><code> declspec(dllexport) void UnmanagedNameEvent::AddEvent(boost::function<std::string (std::string)> f,std::string name) { UnmanagedNameEvent* unmanagedNameEvent=new UnmanagedNameEvent(); unmanagedNameEvent->signalEventMessage.connect(f); //which should be like this.. unmanagedNameEvent->signalEventMessage.connect(bind(NativeCplus::f)); } </code></pre> <p>PROBLEM is I can't use the NativeCplus class to refer to its unmanaged function (i.e.f)as that will create a round dependency of dll file.Any workaround for this?All ears for any shorter solution!!</p>

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