How to: Declare Override Specifiers in Native Compilations
sealed, abstract, and override are also available in compilations that do not use /clr.
Example
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!
};
Example
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
};
Example
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
}