Compiler Warning (level 3) C4240

nonstandard extension used : access to 'classname' now defined to be 'access specifier', previously it was defined to be 'access specifier'

Remarks

Under ANSI compatibility (/Za), you cannot change the access to a nested class. Under the default Microsoft extensions (/Ze), you can, with this warning.

Example

The following example generates C4240:

// C4240.cpp
// compile with: /W3
class X
{
private:
   class N;
public:
   class N
   {   // C4240
   };
};

int main()
{
}