Compiler Error C3168
Visual Studio 2010
'type' : illegal underlying type for enum
The underlying type you specified for the enum type was not valid. The underlying type must be an integral C++ type or a corresponding CLR type.
The following sample generates C3168:
// C3168.cpp
// compile with: /clr /c
ref class G{};
enum class E : G { e }; // C3168
enum class F { f }; // OK
The following sample generates C3168:
// C3168_2.cpp
// compile with: /clr:oldSyntax /c
__gc class G {};
__value enum E : G {e}; // C3168
__value enum F {f}; // OK
