update

README.md

@@ -473,6 +473,14 @@ See also: [EventControllerMotion](https://docs.gtk.org/gtk4/class.EventControlle
 
 See also: [EventControllerKey](https://docs.gtk.org/gtk4/class.EventControllerKey.html)
 
+```python
+        evk = Gtk.EventControllerKey.new()
+        evk.connect("key-pressed", self.key_press)
+        self.add_controller(evk)  # add to window
+    def key_press(self, event, keyval, keycode, state):
+        if keyval == Gdk.KEY_q and state & Gdk.ModifierType.CONTROL_MASK:
+            self.close()
+```
 
 ## Setting the cursor