[Qt-interest] Connecting slots to virtual objects

[Sean Harmer]

On Friday 02 July 2010 12:22:18 Thiago Macieira wrote:
> Em Sexta-feira 2. Julho 2010, às 13.59.50, Dirk Neumann escreveu:
> > Now I want to connect to mySignal() inside the constructor of B. An
> > expression like
> 
> Inside constructors, virtual calls to "this" are not virtual. So you cannot
> call the pure virtual B::myA() from inside B::B().
> 
> Sorry, you need to redesign your approach. This is how C++ works.

One possible simple solution to this is to have your ctor use a singleshot 
timer with a 0 timeout value to call an init() type slot that then makes the 
connection for you. This way your object's vtable will exist when you make the 
connect() call.

Sean