gtk/print.go
func (ps *PrintSettings) GetPaperSize() (*PaperSize, error) {
	c := C.gtk_print_settings_get_paper_size(ps.native())
	if c == nil {
		return nil, nilPtrErr
	}
	p := &PaperSize{c}
	runtime.SetFinalizer(p, (*PaperSize).free)
	return p, nil
}
func (ps *PrintSettings) GetPaperSize() (*PaperSize, error) {
	c := C.gtk_print_settings_get_paper_size(ps.native())
	if c == nil {
		return nil, nilPtrErr
	}
	p := &PaperSize{c}
	runtime.SetFinalizer(p, (*PaperSize).free)
	return p, nil
}
// GetPaperSize() is a wrapper around gtk_print_settings_get_paper_size().