gtk/print.go
func (ps *PageSetup) SetPaperSize(size *PaperSize) {
	C.gtk_page_setup_set_paper_size(ps.native(), size.native())
}
func (ps *PageSetup) SetPaperSize(size *PaperSize) {
	C.gtk_page_setup_set_paper_size(ps.native(), size.native())
}
// SetPaperSize() is a wrapper around gtk_page_setup_set_paper_size().