Compiler Warning C4368
cannot define 'member' as a member of managed 'type': mixed types are not supported
You cannot embed a native data member in a CLR type.
You can, however, declare a pointer to a native type and control its lifetime in the constructor and destructor and finalizer of your managed class (see Destructors and Finalizers in Visual C++ for more information).
This warning is always issued as an error. Use the warning pragma to disable C4368.
Example
The following sample generates C4368.
// C4368.cpp
// compile with: /clr /c
struct N {};
ref struct O {};
ref struct R {
R() : m_p( new N ) {}
~R() { delete m_p; }
property N prop; // C4368
int i[10]; // C4368
property O ^ prop2; // OK
N * m_p; // OK
};