Parent class to call children method

[smishash]

Hello all,

I am looking for elegant way to call children's method from parent class,
is at possible at all?

Thanks

[GCDEF]

Use virtual functions if they're appropriate. A parent class shouldn't have any knowledge of classes derived from it.

[Amleto]

if the parent has declared a virtual, and the parent calls that method somewhere in the class, it will actually call the child class's override of the virtual. oops, just like gcdef said.

otherwise you might need to start thinking about call back maps etc.

[smishash]

Gcdef,Amleto, thanks for your advise,
so after some googling I found a solution that seems nice - using private inheritance
and pure virtual functions at the base class.

http://www.parashift.com/c++-faq-lit....html#faq-24.3

[GCDEF]

Gcdef,Amleto, thanks for your advise,
so after some googling I found a solution that seems nice - using private inheritance
and pure virtual functions at the base class.

http://www.parashift.com/c++-faq-lit....html#faq-24.3

I don't see that private inheritance and pure virtuals buy you anything in this case. public inheritance and regular virtual functions should do what you need.

[smishash]

I don't see that private inheritance and pure virtuals buy you anything in this case. public inheritance and regular virtual functions should do what you need.

- shure, i just liked their way to "defence" themselves from unwanted deeper inheritance :-)

[GCDEF]

- shure, i just liked their way to "defence" themselves from unwanted deeper inheritance :-)

Why?

[Peter_APIIT]

class Measurement : private Feedback {
protected:

public:
Measurement *_feedbck;
char* str_out;

Actually you coding composition.