Enum trick in C++/CLI

In native C++ we could use enum trick in class definition:

namespace EFoo
{
  enum { a = 10; };
}

class Foo
{
   // Declare an array of 10 integers.
   int m_Arr[EFoo::a];  
};

However, with managed enum in C++/CLI,

开发者_如何转开发

public enum class EFoo
{
  a = 10,
};

EFoo::a couldn't be converted implicitly to int, so the enum trick wouldn't be allowed.

Is there any workaround?

Thanks.

---

If you are just trying to achieve the 'enum hack', you should not have to do that in any recent compiler, as they will support static const member declarations.

class Foo
{
private:
    static const int ARRAY_SIZE = 10;
    int m_arr[ARRAY_SIZE];
};

Otherwise, doing an int cast like Jonathan Wood answered would work to change from a managed enum to an int.

---

Try:

arr[(int)EFoo.a];

---

If you dont need the enacpsulation, why not declare it as an "enum" instead of the "enum class"? You can then use it without the cast, and also, without the classname .