Warnings on enum type usage

[wasabi]

I am finally getting the hang of enum lists, but am now getting the following warnings on my code:

warning C4482: nonstandard extension used: enum 'Dialog::Type' used in qualified name

The code is as follows:

class Dialog
{
//...
public:
   enum Type
   {
      Horizon,
      Error
   };
};

Dialog::Dialog(Canvas* parent, int type, Qt::WindowFlags f) : QDialog(parent,f)
{   
   Value.reserve(20);
   this->setLayout(&Layout);
   dialog_type = type;
   switch(dialog_type)
   {
      case Type::Horizon:
         //...
         break;
      default:
         break;
   }
}

The warnings arise in the case Type::Horizon: statement. I've tried it with Dialog::Type::Horizon instead, but that doesn't stop the warning either.

I just don't really understand what it means.

[m4ster r0shi]

http://msdn.microsoft.com/en-us/library/ms173704%28VS.80%29.aspx

[wasabi]

Oh. That's weird. Solves it, so thanks, but... weird.

Just as a curiosity, what if the class has two enum's?

[m4ster r0shi]

This fails to compile:

#include <iostream>
using namespace std;

class MyClass
{
    enum E1
    {
        alpha,beta
    };

    enum E2
    {
        alpha,beta
    };
};

int main()
{
    return 0;
}

That's what I get:

C:\Program Files\CodeBlocks\my_projects\cplusplus\quiz.cpp|13|error: declaration of `alpha'|
C:\Program Files\CodeBlocks\my_projects\cplusplus\quiz.cpp|8|error: conflicts with previous declaration `MyClass::E1 MyClass::alpha'|
C:\Program Files\CodeBlocks\my_projects\cplusplus\quiz.cpp|14|error: declaration of `beta'|
C:\Program Files\CodeBlocks\my_projects\cplusplus\quiz.cpp|9|error: conflicts with previous declaration `MyClass::E1 MyClass::beta'|
||=== Build finished: 4 errors, 0 warnings ===|