add_subwindow(title = new BC_Title(x, y, _("Threshold:")));
y += title->get_h() + margin;
add_subwindow(threshold = new CriKeyThreshold(this, x, y, get_w() - x * 2));
add_subwindow(title = new BC_Title(x, y, _("Threshold:")));
y += title->get_h() + margin;
add_subwindow(threshold = new CriKeyThreshold(this, x, y, get_w() - x * 2));