+void grab_button(guint button, guint state, Window win, guint mask);
+void grab_button_full(guint button, guint state, Window win, guint mask,
+ int pointer_mode, Cursor cursor);
+void ungrab_button(guint button, guint state, Window win);
+
+void grab_key(guint keycode, guint state, Window win, int keyboard_mode);
+
+void ungrab_all_keys(Window win);
+