- _send->input()->changed.connect (connections, invalidator (*this), ui_bind (&SendUI::ins_changed, this, _1, _2), gui_context());
- _send->output()->changed.connect (connections, invalidator (*this), ui_bind (&SendUI::outs_changed, this, _1, _2), gui_context());
+ _send->output()->changed.connect (connections, invalidator (*this), boost::bind (&SendUI::outs_changed, this, _1, _2), gui_context());
+
+ uint32_t const in = _send->pans_required();
+ uint32_t const out = _send->pan_outs();