Adds the events in the bitfield @events to the event mask for @widget. See gtk_widget_set_events() and the [input handling overview][event-masks] for details.
an event mask, see #GdkEventMask
See Implementation
Adds the events in the bitfield @events to the event mask for @widget. See gtk_widget_set_events() and the [input handling overview][event-masks] for details.