_screens->ScreensChanged.connect (boost::bind (&KDMDialog::setup_sensitivity, this));
_timing->TimingChanged.connect (boost::bind (&KDMDialog::setup_sensitivity, this));
_screens->ScreensChanged.connect (boost::bind (&KDMDialog::setup_sensitivity, this));
_timing->TimingChanged.connect (boost::bind (&KDMDialog::setup_sensitivity, this));