gtk:widget-window (object)

object -- a gtk:widget object
window -- a gdk:window object

Accessor of the window slot of the gtk:widget class. The gtk:widget-window function returns the GDK window of the widget if it is realized, nil otherwise. The window slot is only readable. The C library has the gtk_widget_set_window() function to set a GDK window. This function is only used in a "realize" implementation of a widget and not implemented in the Lisp library.