pawel wrote:
>
> In the meantime I had tried to subclass my 'edit Fl_Group'.  (with your 
> corrections) in the callback I've now replaced:
>    edit = new Fl_Group(...);
> with
>    edit = new edit_grp(...);
>
> and moved all the relevant code to the constructor of the new subclass:
>
>    class edit_grp : public Fl_Group {
>    public:
>       edit_grp(...) : Fl_Group(...) {
>          // code from subclass, removing "edit->" where appropriate
>       }
>    }
>

My mistake.  It seems I didn't put a semi-colon, ";", after the final bracket 
of my new subclass.  Apparently that matters.  :)

It's all good.
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