Fixed VT switching

backend/multi/backend.c

@@ -113,3 +113,11 @@ void wlr_multi_backend_add(struct wlr_backend *multi,
 
 	list_add(multi->state->backends, sub);
 }
+
+struct wlr_session *wlr_multi_get_session(struct wlr_backend *base) {
+	if (base->impl != &backend_impl)
+		return NULL;
+
+	struct wlr_backend_state *multi = base->state;
+	return multi->session;
+}

examples/shared.c

@@ -9,6 +9,7 @@
 #include <wayland-server-protocol.h>
 #include <wlr/backend.h>
 #include <wlr/backend/session.h>
+#include <wlr/backend/multi.h> 
 #include <wlr/types/wlr_output.h>
 #include <wlr/types/wlr_input_device.h>
 #include <wlr/util/log.h>
@@ -44,8 +45,14 @@ static void keyboard_key_notify(struct wl_listener *listener, void *data) {
 		}
 		if (sym == XKB_KEY_Escape) {
 			wl_display_terminate(kbstate->compositor->display);
-		} else if (key_state == WLR_KEY_PRESSED && sym >= XKB_KEY_F1 && sym <= XKB_KEY_F12) {
+		} else if (key_state == WLR_KEY_PRESSED &&
-			wlr_session_change_vt(kbstate->compositor->session, sym - XKB_KEY_F1 + 1);
+				sym >= XKB_KEY_XF86Switch_VT_1 &&
+				sym <= XKB_KEY_XF86Switch_VT_12) {
+			struct wlr_session *session =
+				wlr_multi_get_session(kbstate->compositor->backend);
+			if (session) {
+				wlr_session_change_vt(session, sym - XKB_KEY_XF86Switch_VT_1 + 1);
+			}
 		}
 	}
 	xkb_state_update_key(kbstate->xkb_state, keycode,

include/wlr/backend/multi.h

@@ -10,4 +10,6 @@ struct wlr_backend *wlr_multi_backend_create(struct wlr_session *session,
 void wlr_multi_backend_add(struct wlr_backend *multi,
 		struct wlr_backend *backend);
 
+struct wlr_session *wlr_multi_get_session(struct wlr_backend *base);
+
 #endif