Causes widget to become the default widget. widget must be able to be
a default widget; typically you would ensure this yourself
by calling Widget.setCanDefault with a TRUE value.
The default widget is activated when
the user presses Enter in a window. Default widgets must be
activatable, that is, Widget.activate should affect them. Note
that gtk.Entry widgets require the “activates-default” property
set to TRUE before they activate the default widget when Enter
is pressed and the gtk.Entry is focused.
Causes widget to become the default widget. widget must be able to be a default widget; typically you would ensure this yourself by calling Widget.setCanDefault with a TRUE value. The default widget is activated when the user presses Enter in a window. Default widgets must be activatable, that is, Widget.activate should affect them. Note that gtk.Entry widgets require the “activates-default” property set to TRUE before they activate the default widget when Enter is pressed and the gtk.Entry is focused.