I'm using gtkmm to build a UI. The task I'm trying to accomplish is constructing a radio button from an action that is already part of a menu and a toolbar. I'd like the new button to proxy for the existing action.
One likely candidate is Gtk::Action::create_tool_item(). Its documentation states:
Deprecated: 3.10: Use a Gtk::ToolItem and associate it with a Action using Gtk::Actionable::set_action_name() instead
So, I'd expect that ToolItem and by inheritance RadioToolButton would implment this interface. In gtkmm-3.12 it does not and the stable documentation reflects this as well.
However, the C library gtk-3.0 RadioToolButton does implement this interface. So, my question is this.
Should gtkmm Gtk::RadioToolButton implement Gtk::Actionable? Is the absence of this int erface an oversight, or is there another way that the features of Actionable are supported?
There is a function, set_related_action() which associates the correct icon for the radio button. It doesn't seem to put the button into the group and it is also deprecated.
I tried this, and found that the button wasn't added to the action_group and the icon didn't appear.
auto tool = Gtk::manage (new Gtk::RadioToolButton ());
gtk_actionable_set_action_name (GTK_ACTIONABLE (tool->gobj ()), "sample-radio-action");