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Managed to Unmanaged Events

post #1 of 6
Thread Starter 
I am wrapping a C# .NET API with VS C++ CLR so a native VS C++ program can call the API. I was successful in doing the marshaling and making function calls and converting the results. Now I am trying to implement the delegates and events from the .NET API.

Basically we request an update and the device will upon next available opportunity to send the requested information. The API gets the message and interprets it and sends the appropriate event to the user if they subscribe to the event. Everything works in C# but I need it to work in VS C++. This is what I have found but I am having difficulty implementing it. http://msdn.microsoft.com/en-us/libr...VS.100%29.aspx

I guess my question is am I on the write track? I am a self taught programmer so I lack the backup knowledge.
post #2 of 6
AFAIK there is no way to register for a managed event from native code. However, one way would be to provide a intermediate method in C++ CLR that takes an unmanaged callback an event handler delegate for the event in question (that you would then marshal the same way you have been doing, just like the link you provided), wraps it and then subscribes to it using C++ CLR.
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post #3 of 6
Thread Starter 
Well I have been working on this off and on for the last 2 weeks and still haven't got any further. Most of the examples and search results are for using native C++ code in C#. What I have working is based off this sample http://code.msdn.microsoft.com/CppCa...hId=1459473921
post #4 of 6
Thread Starter 
Well I got it working with bittable delegates. However the signature of my delegate contains managed types. At least I am getting somewhere.
post #5 of 6
Okay so let me get this straight... you want to subscribe to a .NET event implemented in C# using native C++....?

Just to simplify it right down...
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post #6 of 6
Thread Starter 
Quote:
Originally Posted by tompsonn View Post
Okay so let me get this straight... you want to subscribe to a .NET event implemented in C# using native C++....?

Just to simplify it right down...
Yes that is what I want to do.
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