GdkDisplay* gtk_widget_get_display ( GtkWidget* widget )
GdkDisplay for the toplevel window associated with
this widget. This function can only be called after the widget
has been added to a widget hierarchy with a
GtkWindow at the top.
In general, you should only create display specific resources when a widget has been realized, and you should free those resources when the widget is unrealized.
|The data is owned by the instance.|