'menu' => '_NET_WM_WINDOW_TYPE_MENU',
'dropdown_menu' => '_NET_WM_WINDOW_TYPE_DROPDOWN_MENU',
'popup_menu' => '_NET_WM_WINDOW_TYPE_POPUP_MENU',
- 'tooltip' => '_NET_WM_WINDOW_TYPE_TOOLTIP'
+ 'tooltip' => '_NET_WM_WINDOW_TYPE_TOOLTIP',
+ 'notification' => '_NET_WM_WINDOW_TYPE_NOTIFICATION'
);
while (my ($window_type, $atom) = each %window_types) {