如何有效地将 C 风格的函数（对于 Mono）绑定到 C++ 风格的类方法

Question

I'm using Mono to bind C# code to C++. After setting up Mono domain etc. you bind functions accordingly:

C++ side:

mono_add_internal_call("Camera::SetPerspectiveVerticalFOV", Camera_SetPerspectiveVerticalFOV);

float Camera_SetPerspectiveVerticalFOV(Camera *camera, float verticalFov)
{
    camera->SetPerspectiveVerticalFOV(verticalFov);
}

C# side:

[MethodImpl(MethodImplOptions.InternalCall)]
public static extern void SetPerspectiveVerticalFOV_Engine(IntPtr cameraObject, float verticalFov);

Now, it is all working to bind the way I'm doing. That is, creating a wrapper class on the C++ side to call a class method on the object in the function parameters (Camera* camera). However, it is incredibly tedious to create a function wrapper (and long function names) for every single Constructor/Getter/Setter just to be able to call the C++-side's class method.

Is there a way to call a C++ function by putting the class object as a function parameter such as:

Foo myFooObject;
Foo::SetBar( &myFooObject, parameter1, parameter2)

Instead of:

Foo myFooObject;
myFooObjcect.SetBar( paramter1, parameter2);

Since then I could just use some preprocessor magic to solve this easier.

Perhaps it's a simple answer, but I struggle to find an answer to it!

Thanks in advance

Answer 1

正如 Botje 建议的那样， std::invoke是我正在寻找的。