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POerror C2664 cannot convert parameter 1 from 'std::string (__thiscall ClassName::* )(std::string)' to 'std::string (__cdecl *)(std::string)
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  1. POerror C2664 cannot convert parameter 1 from 'std::string (__thiscall ClassName::* )(std::string)' to 'std::string (__cdecl *)(std::string)
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    copied!<p>I'm making a unmanaged application to handle an event fired in c# here. FYI:: I want to handle a custom event when my Name property in C# class is changed. I have gone through the following links:</p> <p><a href="http://www.cs.wustl.edu/~schmidt/PDF/C++-ptmf4.pdf" rel="nofollow">Explanation about passing pointer to member function as parameter</a> </p> <p><a href="http://www.questionhub.com/StackOverflow/1540859" rel="nofollow">Something similar to my problem.But couldn't understand the solution</a></p> <p>Now, In NativeApp.cpp,<em>I have a member function which is passed as a function pointer as parameter in a method present in the c++/CLI wrapper</em></p> <pre><code>//NativeApp.cpp std::string Class1::FunctionToBePointed(std::string msg) { return msg; } void Class1::NativeMethod() { UnmanagedWrapperClass* unmanagedWrapperClass=new UnmanagedWrapperClass(); unmanagedWrapperClass-&gt;WrapperMethod(&amp;Class1::FunctionToBePointed,"Hello") } </code></pre> <p>In Wrapper.h, </p> <pre><code>//Wrapper.h class __declspec(dllexport) UnmanagedWrapperClass { boost::signals2::signal&lt;void(std::string)&gt;signalEvent; void WrapperMethod(std::string (*GetCallBack)(std::string),std::string value); } </code></pre> <p>When I call the WrapperMethod from NativeApp.cpp, </p> <ol> <li><p>I subscribe my EventHandlerWrapper to a c# event</p></li> <li><p>connect the function pointer to my boost signal signalEvent.</p></li> <li><p>Set the Name property of the CSharp Class</p> <p>When the Name Property is set, c# event is fired, EventHandlerWrapper method in Wrapper.cpp is executed.Looks like this::</p> <p>void EventHandlerWrapper(string value)</p> <pre><code>{ if(signalEvent.connected()) </code></pre> <p>{ signalEvent(value); }</p></li> </ol> <p>For some reasons I can't make my FunctionToBePointed(std::string) method as a non-member function.</p> <p>P.S:: All ears for any other design approach.</p>
 

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