Hi,
Actually I am creating a hierarchy of MANAGED classes.
I like to know if there is way to mark a virtual (abstract) function as
"must be implemented on each derived class".
example:
ref class Test abstract
{
public:
void read() abstract;
};
ref class TestDerived : Test
{
public:
void read() {}
};
ref class TestDerived2 : TestDerived
{
};
int main()
{
TestDerived2^ TD = gcnew TestDerived2();
return 0;
}
I'd like a compile-error for this code considering that 'void read()' is
not implemented for 'TestDerived2' class
Thanks fon any help.
Marco.
--
For direct reply change underscore to dot 3 1297
Hi Marco, Actually I am creating a hierarchy of MANAGED classes. I like to know if there is way to mark a virtual (abstract) function as "must be implemented on each derived class".
I'd like a compile-error for this code considering that 'void read()' is not implemented for 'TestDerived2' class
Highly unlikely I'd guess, since TestDerived is a concrete class, and thus,
what you put in is valid code (since TestDerived2 actually *does* have the
read() implementation inherited from TestDerived)
What is it that you're trying to accomplish?
--
Tomas Restrepo to****@mvps.org
Tomas Restrepo (MVP) wrote: Highly unlikely I'd guess, since TestDerived is a concrete class, and thus, what you put in is valid code (since TestDerived2 actually *does* have the read() implementation inherited from TestDerived)
This is the same behaviour of a standard c++ class hierarchy (not managed).
What is it that you're trying to accomplish?
I like to know if in a hierarchy of managed classes
I am able to give to a virtual/abstract member-function of the class A
an attribute or other so that I may find out (at compiler-time)
if every derived class of A implements *its own* version of this
virtual/abstract member-function.
Marco.
--
For direct reply change underscore to dot
No, there is not, abstract like pure in standard C++ only works on the next
level of the inheritance hierarchy.
Ronald Laeremans
Visual C++
"Marco Segurini" <ma************ @jumpy.it> wrote in message
news:uz******** ******@TK2MSFTN GP14.phx.gbl... Tomas Restrepo (MVP) wrote: Highly unlikely I'd guess, since TestDerived is a concrete class, and thus, what you put in is valid code (since TestDerived2 actually *does* have the read() implementation inherited from TestDerived)
This is the same behaviour of a standard c++ class hierarchy (not managed).
What is it that you're trying to accomplish?
I like to know if in a hierarchy of managed classes I am able to give to a virtual/abstract member-function of the class A an attribute or other so that I may find out (at compiler-time) if every derived class of A implements *its own* version of this virtual/abstract member-function.
Marco.
--
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