Gtk.UIManager::connect-proxy

function callback(u_i_manager, action:Gtk.Action, proxy:Gtk.Widget, ):void;

The ::connect-proxy signal is emitted after connecting a proxy to an action in the group.

This is intended for simple customizations for which a custom action class would be too clumsy, e.g. showing tooltips for menuitems in the statusbar.

Since 2.4