Adjustments

gtkmm has various widgets that can be visually adjusted using the mouse or the keyboard, such as the Range widgets (described in the Range Widgets section). There are also a few widgets that display some adjustable part of a larger area, such as the Viewport widget. These widgets have Gtk::Adjustment objects that express this common part of their API.

Gtk::Adjustment har en value_changed-signal så att program kan reagera på ändringar, exempelvis då en användare flyttar en rullningslist. Du kan sedan använda metoden get_value() för att få reda på det nya värdet.