Compiler Error C3265

cannot declare a managed 'managed construct' in an unmanaged 'unmanaged construct'

You cannot include a managed object in an unmanaged context.

The following sample reproduces C3265:

// C3265_2.cpp
// compile with: /clr /LD
#include <vcclr.h>

ref class A { };

class B
// try the following line instead
// ref class B
{
   A ^a;   // C3265
   // or embed the managed handle using gcroot
   // try the following line instead
   // gcroot<A^> a;
};