jason wrote:
> I would like it if I could have a single class that is called - like so ...
>
> public class myWidget : <relevant widget type>
> {
> ... do stuff // few hundred lines of code
> }
template <typename T>
class myWidget:public T {
...
}
would do the job.
>
> The thing is that I am going to have tens of widgets represented by an
> individual
> class with hundreds if lines of the exact same code so
> it would be great if I could use templates here somehow.
When using templates it is good thing to avoid template-based bloat. If
your function would compile to the same "machine code", then it might be
better to define eg external function which takes a widget pointer as a
parameter, use a callback/plugin or something similar. The unnecessary
bloat might occur eg if you would use many base classes of the same root
and use the root class methods: it would unnecessarily reimplement the
function for each class, for each class it would create its own v-table
etc. If your function is only "syntactically the same" (looks the same),
but uses different implementation of non-virtual functions it calls,
then use of templates makes sense.
R.
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