[gtkmm] `slot' undeclared in namespace `SigC'

[Russell Shaw <rjshaw netspace net au>]

Hi,

I just learnt gtkmm. I get this error:

  error: `slot' undeclared in namespace `SigC'


This .cc file:

  #include<gtkmm.h>
  ...
  button.signal_clicked().
           connect(SigC::slot(*this,&Database::parts_button_cb));

I'm using gtmm-2.4 on debian and converting a program from gtk2.4 in C.