description | title | ms.date | ms.topic | helpviewer_keywords | ms.assetid | |
---|---|---|---|---|---|---|
Learn more about: new (new slot in vtable) (C++/CLI and C++/CX) |
new (new slot in vtable) (C++/CLI and C++/CX) |
10/12/2018 |
reference |
|
1a9a5704-f02f-46ae-ad65-f0f2b6dbabc3 |
The new
keyword indicates that a virtual member will get a new slot in the vtable.
(There are no remarks for this language feature that apply to all runtimes.)
Not supported in Windows Runtime.
In a /clr
compilation, new
indicates that a virtual member will get a new slot in the vtable; that the function does not override a base class method.
new
causes the newslot modifier to be added to the IL for the function. For more information about newslot, see:
-
xref:System.Reflection.MethodInfo.GetBaseDefinition?displayProperty=nameWithType
-
xref:System.Reflection.MethodAttributes?displayProperty=nameWithType
Compiler option: /clr
The following sample shows the effect of new
.
// newslot.cpp
// compile with: /clr
ref class C {
public:
virtual void f() {
System::Console::WriteLine("C::f() called");
}
virtual void g() {
System::Console::WriteLine("C::g() called");
}
};
ref class D : public C {
public:
virtual void f() new {
System::Console::WriteLine("D::f() called");
}
virtual void g() override {
System::Console::WriteLine("D::g() called");
}
};
ref class E : public D {
public:
virtual void f() override {
System::Console::WriteLine("E::f() called");
}
};
int main() {
D^ d = gcnew D;
C^ c = gcnew D;
c->f(); // calls C::f
d->f(); // calls D::f
c->g(); // calls D::g
d->g(); // calls D::g
D ^ e = gcnew E;
e->f(); // calls E::f
}
C::f() called
D::f() called
D::g() called
D::g() called
E::f() called