// for hardware keys
gboolean key_press_cb(GtkWidget* widget, GdkEventKey* event, HildonWindow* window);
+// middle event box
+gboolean middle_event_box_button_press(GtkWidget* widget, GdkEventButton* event, gpointer data);
+
// top event box
gboolean top_event_box_button_press(GtkWidget* widget, GdkEventButton* event, gpointer data);