GdkEventButton *event);
gint (* button_release_event) (GtkWidget *widget,
GdkEventButton *event);
+ gint (* scroll_event) (GtkWidget *widget,
+ GdkEventScroll *event);
gint (* motion_notify_event) (GtkWidget *widget,
GdkEventMotion *event);
gint (* delete_event) (GtkWidget *widget,