Re: Multiple inheritance virtual abstract method disambiguation

From:
xKubo <peter.kubini@gmail.com>
Newsgroups:
comp.lang.c++.moderated
Date:
Thu, 11 Aug 2011 16:01:56 CST
Message-ID:
<671adfd6-c9ad-4f68-9a71-b312aa516d7f@r12g2000vbe.googlegroups.com>
On Aug 8, 8:03 pm, Johannes Schaub <schaub.johan...@googlemail.com>
wrote:

xK...@hotmail.com wrote:

Hi,

Assume the ITest and ITest2 cannot be modified, and I would like to
implement them in one class, but differently for each interface, is it
possible in standard C++ ?

struct ITest
{
virtual void Close() = 0;
};

struct ITest2
{
virtual void Close() = 0;
};

struct X : ITest, ITest2
{
///// something like this is probably incorrect
//// virtual void ITest::Close() {}
//// virtual void ITest2::Close() {}
};


Herb Sutter wrote on this. It's described athttp://www.gotw.ca/gotw/039.htm

In a nutshell, introduce MyITest1 and MyITest2 that derives from ITest and
ITest2 respectively. Implement the respective Close function by calling a
differently-named virtual function Close1 and Close2 respectively. Then
derive X from MyITest1 and MyITest2 and implement Close1 and Close2.


As long as the ancestor's methods are abstract the commented
implementation works in Visual studio 2010.
So, I was curious if something similar exists in standard C++ ( except
the trivial solution involving more classes).
It doesn't seem to exist.

Anyway, thank you for your answer.

xKubo

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