Complex key bindings in Gtk

[Дмитриев Александр <m1n7 yandex ru>]

Some text editors like sublime or atom support [complex key bindins][1], when you press and release two or more buttons while holding `Ctrl` or any other modifier key depressed.

There seems to be no direct support of such a concept in Gtk. Of course, one can do something like this:

    static second_event_happened = FALSE;

    ctrl_k_cb ()
    {
        g_timeout_add (500, ctrl_k_timeout, NULL) // queue watching function
        
        // adjust accels so that until timeout ctrl+t calls ctrl_k_t_cb
    }

    ctrl_k_timeout ()
    {
        if (second_event_happened)
            ctrl_k_function ();
        else
            ;

        // reset accels to their normal state, i.e. ctrl+t calls ctrl_t_cb
    }

    ctrl_t_cb ()
    {
        ...    
    }

    ctrl_k_t_cb ()
    {
        second_event_happened = TRUE;

        ...
    }

However, this approach is error-prone.
Is there a more simple or GTK-ish solution?

[1]: http://docs.sublimetext.info/en/latest/customization/key_bindings.html#key-chords

 

 

--

Alexander