How about allowing people to define properties as members of interfaces?  This would allow people to use member-data style syntax for properties of interfaces, while still allowing it all to come through a vtable:

    interface MyIntf
    {
        void myProp(int val);
        int myProp();
    }

    class MyClass : MyIntf
    {
    public:
        void myProp(int val);
        int myProp();
    }
    class MyClass2 : MyIntf
    {
    public:
        int myProp;
    }

    MyIntf obj = new MyClass;
    MyIntf obj2 = new MyClass2;
    obj.myProp = 1;
    obj2.myProp = 2;
    printf("%d %d\n", obj.myProp, obj2.myProp);

In order for MyClass2 to work, the compiler would have to generate wrapper accessor functions for the myProp property of that class, of course.  However, MyClass could work without any compiler-generated code.

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"Russ Lewis" <spamhole-2001-07-16@deming-os.org> wrote in message news:3CF456D0.B775BF8E@deming-os.org...
> How about allowing people to define properties as members of interfaces?  This would allow people to use member-data style syntax for properties of interfaces, while still allowing it all to come through a vtable:
>
>     interface MyIntf
>     {
>         void myProp(int val);
>         int myProp();
>     }
>
>     class MyClass : MyIntf
>     {
>     public:
>         void myProp(int val);
>         int myProp();
>     }
>     class MyClass2 : MyIntf
>     {
>     public:
>         int myProp;
>     }
>
>     MyIntf obj = new MyClass;
>     MyIntf obj2 = new MyClass2;
>     obj.myProp = 1;
>     obj2.myProp = 2;
>     printf("%d %d\n", obj.myProp, obj2.myProp);
>
> In order for MyClass2 to work, the compiler would have to generate wrapper accessor functions for the myProp property of that class, of course.  However, MyClass could work without any compiler-generated code.
>
> --
> The Villagers are Online! http://villagersonline.com
>
> .[ (the fox.(quick,brown)) jumped.over(the dog.lazy) ]
> .[ (a version.of(English).(precise.more)) is(possible) ]
> ?[ you want.to(help(develop(it))) ]
>



I know Delphi supports this kind of construction and
I think it is also in the IDL spec. Seems good enough
of an idea to me!


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