Correct way to marshal SIZE_T*?

Question

I have the following C++ function definition, which I am trying to call through PInvoke from managed code:

bool FooBar(SIZE_T* arg1);

My ma

Answer 1

Using IntPtr and/or UIntPtr is doing it properly - the types are there specifically for this purpose! I do not understand why you consider it an "ugly hack". I'm also not sure what your proposed alternative would be - any kind of attribute to allow values to be mapped to uint would be inherently wrong, because C# uint is guaranteed to be 32-bit regardless of the architecture, and so on 64-bit platform, to marshal it correctly, it would have to trim half of it, losing data, and likely rendering the result useless.