gtk/print.go
func (ps *PrintSettings) GetPrinterLpi() float64 {
	c := C.gtk_print_settings_get_printer_lpi(ps.native())
	return float64(c)
}
func (ps *PrintSettings) GetPrinterLpi() float64 {
	c := C.gtk_print_settings_get_printer_lpi(ps.native())
	return float64(c)
}
// GetPrinterLpi() is a wrapper around gtk_print_settings_get_printer_lpi().