diff --git a/gdk/broadway/gdkbroadwaywindow.h b/gdk/broadway/gdkbroadwaywindow.h
index 7bb72991ed..76f29ea6a8 100644
--- a/gdk/broadway/gdkbroadwaywindow.h
+++ b/gdk/broadway/gdkbroadwaywindow.h
@@ -47,6 +47,8 @@ typedef struct _GdkBroadwayWindowClass GdkBroadwayWindowClass;
 
 GType    gdk_broadway_window_get_type          (void);
 
+guint32  gdk_broadway_get_last_seen_time (GdkWindow       *window);
+
 G_END_DECLS
 
 #endif /* __GDK_BROADWAY_WINDOW_H__ */
diff --git a/gdk/broadway/gdkwindow-broadway.c b/gdk/broadway/gdkwindow-broadway.c
index 3932049c64..7b6189fb93 100644
--- a/gdk/broadway/gdkwindow-broadway.c
+++ b/gdk/broadway/gdkwindow-broadway.c
@@ -1341,6 +1341,16 @@ _gdk_broadway_window_translate (GdkWindow      *window,
     }
 }
 
+guint32
+gdk_broadway_get_last_seen_time (GdkWindow  *window)
+{
+  GdkDisplay *display;
+
+  display = gdk_window_get_display (window);
+  _gdk_broadway_display_consume_all_input (display);
+  return (guint32) GDK_BROADWAY_DISPLAY (display)->last_seen_time;
+}
+
 static void
 gdk_window_impl_broadway_class_init (GdkWindowImplBroadwayClass *klass)
 {