code: func (v *StyleContext) GetScreen() (*gdk.Screen, error) {
  	c := C.gtk_style_context_get_screen(v.native())
  	if c == nil {
  		return nil, nilPtrErr
  	}
  
  	d := &gdk.Screen{glib.Take(unsafe.Pointer(c))}
  	return d, nil
  }
docs: // GetScreen is a wrapper around gtk_style_context_get_screen().