managed

Is there a way to share an enum definition between native (unmanaged) C++ and (managed) C#? I have the following enum used in completely unmanaged code: enum MyEnum { myVal1, myVal2 }; Our application sometimes uses a managed component. That C# component gets the enum item values as ints via a managed C++ interop dll (from the native dll). (The interop dll only loads if the C# component is needed.) The C# component has duplicated the enum definition: public enum MyEnum { myVal1, myVal2 }; Is there a way to eliminate the duplication without turning the native C++ dll into a managed dll? You can

What is meant by the terms managed resource and unmanaged resource in .NET? How do they come into the picture? The term "unmanaged resource" is usually used to describe something not directly under the control of the garbage collector . For example, if you open a connection to a database server this will use resources on the server (for maintaining the connection) and possibly other non-.net resources on the client machine, if the provider isn't written entirely in managed code. This is why, for something like a database connection, it's recommended you write your code thusly: using (var

in my next project I want to implement a GUI for already existing code in C++. My plan is to wrap the C++ part in a DLL and to implement the GUI in C#. My problem is that I don't know how to implement a callback from the unmanaged DLL into the manged C# code. I've already done some development in C# but the interfacing between managed and unmanaged code is new to me. Can anybody give me some hints or reading tips or a simple example to start from? Unfortunatly I could not find anything helpful. You don't need to use Marshal.GetFunctionPointerForDelegate(), the P/Invoke marshaller does it

I'm getting this weird error on some stuff I've been using for quite a while. It may be a new thing in Visual Studio 2010 but I'm not sure. I'm trying to call a unamanged function written in C++ from C#. From what I've read on the internet and the error message itself it's got something to do with the fact that the signature in my C# file is not the same as the one from C++ but I really can't see it. First of all this is my unamanged function below: TEngine GCreateEngine(int width,int height,int depth,int deviceType); And here is my function in C#: [DllImport("Engine.dll", EntryPoint =