GtkEntry::set_activates_default
void set_activates_default(bool
setting);
If setting is true, pressing Enter in the entry will
activate the default widget for the window containing the entry.
This usually means that the dialog box containing the entry will be
closed, since the default widget is usually one of the dialog buttons.
(For experts: if setting is true, the entry calls
activate_default() on the window
containing the entry, in the default handler for the "activate" signal.)
See also:
get_activates_default()