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How to: Declare Override Specifiers in Native Compilations

sealed, abstract, and override are also available in compilations that do not use /clr.

Description

The following sample shows that sealed is valid in native compilations:

Code

// sealed_native_keyword.cpp
#include <stdio.h>
__interface I1 {
   virtual void f();
   virtual void g();
};

class X : public I1 {
public:
   virtual void g() sealed {}
};

class Y : public X {
public:

   // the following override generates a compiler error
   virtual void g() {}   // C3248 X::g is sealed!
};

Description

The following sample shows that override is valid in native compilations:

Code

// override_native_keyword.cpp
#include <stdio.h>
__interface I1 {
   virtual void f();
};

class X : public I1 {
public:
   virtual void f() override {}   // OK
   virtual void g() override {}   // C3668 I1::g does not exist
};

Description

The following sample shows that abstract is valid in native compilations:

Code

// abstract_native_keyword.cpp
class X abstract {};

int main() {
   X * MyX = new X;   // C3622 cannot instantiate abstract class
}
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