C++/CLI : Casting from unmanaged enum to managed enum

Assuming your native code is

enum shape_type_e
{
    stUNHANDLED     = 0,            //!< Unhandled shape data.
    stPOINT         = 1             //!< Point data.
    ...
};

and your managed code is

public enum class ShapeType
{
    Unhandled   = 0,
    Point       = 1,
    ...
};

You can cast from the native to the managed using

shape_type_e nativeST = stPOINT;
ShapeType managedST = static_cast<ShapeType>(nativeST);
Debug.Assert(managedST == ShapeType::Point);

I always use static_cast, not the C# way of casting.