Re: Call C# managed method from Unmaged callback

The sample was the old managed C++ syntax.

Here is the sample with the C++/CLI syntax:

#using <mscorlib.dll>
using namespace System;

#include "vcclr.h"

public ref class MyManagedClass
{
   public:
     void OnEvent()
     {
       // callback
       Console::WriteLine(__FUNCSIG__);
     }
};

class MyUnmanagedClass
{
   public:
     MyUnmanagedClass() {}

   void SetManagedCallbackObject(MyManagedClass^ pMC)
   {
     m_pMC = pMC;
   }

   void FireEvent()
   {
     MyManagedClass^ pMC = m_pMC;
     if (pMC != nullptr)
     {
       pMC->OnEvent();
     }
   }
   protected:
     gcroot<MyManagedClass^> m_pMC;
};

int main()
{
   MyManagedClass^ m = gcnew MyManagedClass();

   MyUnmanagedClass u;
   u.SetManagedCallbackObject(m);

   // Call the managed method via the unmanaged class...
   u.FireEvent();
}

--
Greetings
   Jochen

    My blog about Win32 and .NET
    http://blog.kalmbachnet.de/