Attaches context to the given screen.
The screen is used to add style information from 'global' style
providers, such as the screens GtkSettings instance.
If you are using a GtkStyleContext returned from
gtk_widget_get_style_context(), you do not need to
call this yourself.
Attaches context to the given screen. The screen is used to add style information from 'global' style providers, such as the screens GtkSettings instance. If you are using a GtkStyleContext returned from gtk_widget_get_style_context(), you do not need to call this yourself.